User Guide
PC2-LIMBO • CompactPCI ® PlusIO
Intel Atom™ Processor E6xx Series • Low Power CPU Card
®
Suitable for Classic CompactPCI© and PICMG 2.30 CompactPCI® PlusIO Systems
Document No. 6240 • Edition 15 • 16 June 2016
PC2-LIMBO
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Contents
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Edition History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trade Marks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Legal Disclaimer - Liability Exclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
4
5
5
5
5
6
7
Technical Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Feature Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Performance Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Top View Component Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Front Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Front Panel Switches & Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
On-Board Connectors & Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pin Headers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Thermal Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Main Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Graphics Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
LAN Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Serial ATA Interface (SATA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
PCI Express® Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Universal Serial Bus (USB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Utility Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Real-Time Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SPI Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Front Panel LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
PG (Power Good) LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
GP (General Purpose) LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
HD (Hard Disk Activity) LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Hot Swap Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Power Supply Status (DEG#, FAL#) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
+5V Only Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Battery Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Mezzanine Side Board Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
CompactPCI® PlusIO Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
CompactPCI® Classic Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Installing and Replacing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EMC Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
© EKF
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User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Replacement of the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Technical Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local PCI Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local SMB Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware Monitor LM87 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPIO Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPIO Usage Tunnel Creek CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPIO Usage Topcliff PCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPIO Usage PE Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPIO Usage PE to PCI Bridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuration Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CMOS Reset (P-GP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RTC Reset (P-RTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DVI Video Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USB Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ethernet Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mezzanine Connectors & Card Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CFast™ Host Connector CF1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expansion Interface J-EXP(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expansion Interface J-EXP2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Speed Expansion Connector J-HSE . . . . . . . . . . . . . . . . . . . . . . . . . .
Expansion Connector J-LVDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PCI Express® Expansion Header J-PCIE . . . . . . . . . . . . . . . . . . . . . . . . . . .
MSD1 microSD Card Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Headers & Debug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel Handle Microswitch Header P-FPH . . . . . . . . . . . . . . . . . . . . .
PLD Programming Header P-ISP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Processor Debug Header XDP1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backplane Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CompactPCI® Backplane Connector J1 . . . . . . . . . . . . . . . . . . . . . . . . . . .
CompactPCI® Backplane Connector J2 (PlusIO) . . . . . . . . . . . . . . . . . . . .
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82
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
© EKF
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ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
About this Manual
This manual describes the technical aspects of the PC2-LIMBO, required for installation and system
integration. It is intended for the experienced user only.
Edition History
Ed.
Contents/Changes
Author
Date
1
User Manual PC2-LIMBO, english, preliminary edition
Text #6240, File: pc2_ug.wpd
jj
11 February 2011
2
Added photos PC2-LIMBO, added photos showing how to force system
shutdown using the front panel handle integrated switch
jj
13 May 2011
3
BIOS usage of GP LED - document link added, photos of hybrid systems
added
jj
24 May 2011
4
Added photo bottom view (microSD card holder)
jj
17 August 2011
5
Added photos PC2-C40/C43/C47
jj
22 August 2011
6
Added/changed photos front view
jj
26 August 2011
7
Major review reflecting board revision 1
mib/jj
18 January 2012
8
Chapter +5V Only Design: +3.3V power rail 15A fuse to backplane
connector not populated by default. Added photos of new 44HP
systems, added photos of sample hybrid backplanes
jj
4 April 2012
9
Table Feature Summary: Maxim supply current of the +3.3V power rail
to backplane up to 5A
jj
26 October 2012
10
Added photos of battery options
jj
18 February 2013
11
Added photos of custom specific cooler plate. Removed VGA video
option. Described SATA options more clearly. Added MTBF. Added
Cfast Card recommended parts.
jj
17 April 2013
12
Replaced some photos with respect to current board revision 4, some
technical details described more clearly
jj
6 August 2013
13
Added Power Requirements, P-GP function
mib
19 January 2015
14
Battery lifetime scenario
jj
8 April 2015
15
Typo corrected
jj
16 June 2016
© EKF
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User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Related Documents
Related Information PC2-LIMBO
PC2-LIMBO Home
www.ekf.com/p/pc2/pc2.html
PC2-LIMBO Product Information
www.ekf.com/p/pc2/pc2_pi.pdf
Nomenclature
Signal names used herein with an attached '#' designate active low lines.
Trade Marks
Some terms used herein are property of their respective owners, e.g.
<
<
<
<
Queens Bay, Tunnel Creek, Topcliff, Atom E6xx: ® Intel
CompactPCI, CompactPCI PlusIO, CompactPCI Serial: ® PICMG
Windows XP, Windows 7, Windows 8: ® Microsoft
EKF, ekf system: ® EKF
EKF does not claim this list to be complete.
Legal Disclaimer - Liability Exclusion
This manual has been edited as carefully as possible. We apologize for any potential mistake.
Information provided herein is designated exclusively to the proficient user (system integrator,
engineer). EKF can accept no responsibility for any damage caused by the use of this manual.
© EKF
-5-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Standards
Reference Documents
Term
Document
Origin
CFast™
CFast™ Specification Rev. 1.0
www.compactflash.org
CompactPCI®
CompactPCI Specification, PICMG® 2.0 R3.0, Oct. 1, 1999
www.picmg.org
CompactPCI®
PlusIO
CompactPCI PlusIO Specification, PICMG® 2.30 R1.0,
November 11, 2009
www.picmg.org
CompactPCI®
Serial
PICMG® CPCI-S.0 (Draft as of Current)
www.picmg.org
DVI
Digital Visual Interface Rev. 1.0
Digital Display Working Group
www.ddwg.org
Ethernet
IEEE Std 802.3, 2000 Edition
standards.ieee.org
LPC
Low Pin Count Interface Specification, Revision 1.1
developer.intel.com/design/
chipsets/industry/lpc.htm
microSDHC
SD Card Specifications
www.sdcard.org
HD Audio
High Definition Audio Specification Rev.1.0
www.intel.com/design/chipsets/
hdaudio.htm
PCI Express®
PCI Express® Base Specification 3.0
www.pcisig.com
PCI Local Bus
PCI 2.2/2.3/3.0 Standards PCI SIG
www.pcisig.com
SATA
Serial ATA 2.5/2.6 Specification
www.sata-io.org
USB
Universal Serial Bus Specification
www.usb.org
© EKF
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ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Overview
The PC2-LIMBO is a low power 4HP/3U
CompactPCI® CPU board, equipped with an
Intel® Atom™ E6xx series 1.6GHz processor,
available on request for the industrial operating
temperature range. The PC2-LIMBO front panel
is provided with two Gigabit Ethernet jacks, two
USB receptacles, and a DVI video connector for
attachment of a high resolution digital display.
The PC2-LIMBO is equipped with up to 2GB
soldered RAM for rugged applications. An onboard CFast™ host connector is provided for
attachment of a SATA SSD module. In addition,
a microSD card holder can accommodate an
industrial microSDHC Flash card. Further more,
several SATA based low profile mass storage
expansion modules are available as an option.
The PC2-LIMBO is equipped wit a set of local
expansion interface connectors, which can be
optionally used to attach a mezzanine side
board. A variety of expansion cards is available,
e.g. providing legacy I/O (e.g. RS-232) and
additional PCI Express® based I/O circuitry such
as SATA, USB and Gigabit Ethernet. Most
mezzanine side cards can accommodate in
addition a 2.5-inch drive.
Typically, the PC2-LIMBO and the related side
card would come as a readily assembled 8HP
unit. As an alternate, low profile mezzanine
storage modules are available that fit on the
PC2-LIMBO while maintaining the 4HP profile.
The C42-SATA module e.g. is provided with a
1.8-Inch Micro SATA SSD up to 800GB capacity.
CompactPCI® PlusIO (PICMG 2.30) is a new
standard for rear I/O across J2, specified by the
PICMG®. High speed signal lines (PCI Express®,
SATA, Gigabit Ethernet and USB) are passed
from the PC2-LIMBO through the special UHM
connector to the backplane, for usage either on
a PlusIO rear I/O transition module, or
CompactPCI® Serial card slots.
CompactPCI® Serial (PICMG CPCIS.0) defines a
completely new card slot, based on PCI
Express®, SATA, Gigabit Ethernet and USB
serial data lines. On a hybrid backplane, both
card styles can reside, CompactPCI® and
CompactPCI® Serial, with the PC2-LIMBO in the
middle as system slot controller for both
backplane segments.
© EKF
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ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Technical Features
Feature Summary
Feature Summary
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<
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<
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<
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<
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<
<
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<
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© EKF
CompactPCI® System Slot Controller
CompactPCI® PlusIO Rear I/O According to PICMG® 2.30
Hybrid Systems Option (Dual Backplane CompactPCI® & CompactPCI® Serial)
Based on the Intel® Queens Bay Platform (Tunnel Creek CPU, Topcliff PCH)
Intel® Atom™ Series E6xx Mobile Processor, Power Optimized CPU, Integrated Graphics Engine
E620(T) Processor 0.6GHz 3.3W TDP (T = -40°C to +85°C)
E640(T) Processor 1.0GHz 3.6W TDP (T = -40°C to +85°C)
E660(T) Processor 1.3GHz 3.6W TDP (T = -40°C to +85°C)
E680(T) Processor 1.6GHz 4.5W TDP (T = -40°C to +85°C)
DDR2 Soldered Memory up to 2GB
Integrated Graphics Controller (Front Panel: DVI Connector)
Max Resolution 1920x1080
Intel® EG20T (Topcliff) Platform Controller Hub (PCH)
Dual Gigabit Ethernet Controllers (Individually BIOS Controlled either F/P or J2 RIO)
Two Native SATA Channels 3Gbps
Four Additional SATA Channels 3Gbps, Mezzanine Usage (Option on Request) and/or Rear I/O
(JMicron Controllers, no BIOS Boot Support as of Current)
Twelve USB 2.0 Channels
CFast™ Card Host Connector on-Board (SATA 3Gbps I/F)
microSD Host Connector (up to 32GB Class 6 Speed microSDHC Card Support)
SATA 1.8-Inch Solid State Drive (SSD) up to 800GB with C42-SATA Mezzanine Module Option
(4HP Assembly Height Maintained)
CompactFlash with C40-SCFA Mezzanine Module Option (4HP Maintained)
Secondary CFast™ Card Host Connector with C41-CFAST Mezzanine Module Option (4HP
Maintained)
On-Board PCI Express® Packet Switch (4 Lanes available for Rear I/O and CPCI Serial Backplane
Respectively, another 1 Lane for Mezzanine Side Card)
Legacy I/O Expansion Connectors (CAN2.0B, HD Audio, LPC, PS/2, UART)
High Speed I/O Expansion Connectors (LVDS, PCI Express®, SATA, USB)
Variety of Mezzanine Expansion Boards (Side Cards) Available with and w/o PCIe
Most Mezzanines Optionally Equipped with 2.5-Inch Single- or Dual-Drive
Rear I/O Transition Module Option (e.g. PR1-RIO)
+5V Only Design, on-Board +3.3V Regulator Can Feed CPCI Peripheral Slot Cards up to 5A thus
Eliminating Need for +3.3V External Power Supply Rail
UEFI Phoenix BIOS with ACPI
Long Term Availability
Coating, Sealing, Underfilling on Request
RoHS Compliant
Operating Temperature 0°C to +70°C (-40°C to +85°C on Request)
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User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Performance Rating
Performance Rating
tbd
Operating Conditions
Operating Conditions
Thermal &
Environmental
Conditions
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Operating Temperature 0°C to +70°C (-40°C to +85°C on Request)
Storage temperature: -40°C to +85°C, max. Gradient 5°C/min
Humidity 5% ... 95% RH non Condensing
Altitude -300m ... +3000m
Shock 15g 0.33ms, 6g 6ms
Vibration 1g 5-2000Hz
EC Regulations
<
<
EN55022, EN55024, EN60950-1 (UL60950-1/IEC60950-1)
2002/95/EC (RoHS)
MTBF
<
13.3 years
Power Requirements
Power Requirements
5V +0.25V/-0.15V
PC2-620D
PC2-62CD
PC2-41CD
© EKF
POSReady Idle Idle
2.5A
Power Thermal Utility 100%
2.9A
POSReady Idle Idle
1.7A
Power Thermal Utility 100%
2.1A
POSReady Idle Idle
1.65A
Power Thermal Utility 100%
1.85A
-9-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Block Diagram
®
Simplified Block Diagram
®
PC2-LIMBO
GbE
GbE
PlusIO
J2
Top Mount
Card Holder
DVI Video
CPU Card
PICMG CompactPCI PlusIO
Front
Panel
I/O
GbE
1
GbE
2
J2
PlusIO
SPI
Flash
Panel
Link
CFast™
88E
1116R
82574
IT
2
PE
CPU
DDR2
667/800
PE
82574
SPI
1.6GHz E680(T)
1.3GHz E660(T)
1.0GHz E640(T)
0.6GHz E620(T)
SDVO
SATA
USB
RGMII
25
640
SPI-ROM
Tunnel Creek
Intel®
Atom™
PE
EG20T
Topcliff
Intel®
PCH
Queensbay Platform
PE
PE
LPC • HD Audio
PCIe
Bridge
PE
2
Switch
1:7
PE
SIO
SATA
x2
KBD/MS
Bottom Mount
Card Holder
USB
1:4
SATA
x2
USB
1:4
Micro
SDHC
J-EXP2
LVDS
SATA
USB
USB
USB
CAN • UART • SDHC
SDHC
PCI
5
PE
2
SATA
2
4
2
CAN • UART • SDHC
PS/2 KBD MS
Mezzanine
Side Card
I/O
4
2
2
Option
4
GbE
J2
PE x 4
Backplane
PlusIO
CompactPCI
ekf.com
-10-
© EKF
DDR2 Soldered
BIOS
© EKF
-11Dual
GbE
USB
USB
DVI-D
P-ISP
CFast Socket
PC2-LIMBO
PC2-LIMBO
ekf.com
© EKF
Memory
Down
Intel®
Atom™
J-PCIE
J-LVDS
Top Side
© EKF • ekf.com
Intel®
I/O Hub
J-EXP
Memory
Down
J-HSE
H1
+5V
J1
UHM
J2
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Top View Component Assembly
ekf.com
J-EXP2
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Front Panel Connectors
DVI-D
DVI digital video output receptacle (DVI-I connector face for optimum compatibility
with all types of DVI video cables)
ETH1/2
Dual Gigabit Ethernet RJ-45 receptacles with integrated indicator LEDs
USB1/2
Universal Serial Bus 2.0 type A receptacles
Front Panel Switches & Indicators
FPH
Front Panel Handle with integrated switch, emulates the power event button
GP
General Purpose bicolour LED
HD
LED indicating any activity on SATA ports
PG
Power Good/Board Healthy bicolour LED
© EKF
-12-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
On-Board Connectors & Sockets
CF1
CFast™ Card host connector (SATA SSD with CompactFlash dimensions)
H1
+5V supply power terminal block (available on request only for stand-alone
applications)
J1
CompactPCI® 32-bit 33MHz standard hard metric connector
J2
CompactPCI® PlusIO Rear I/O special high speed UHM connector
J-EXP(1)
Utility EXPansion interface connector (LPC, USB, HD Audio, SMBus), available either
from top (T) or bottom (B) 1) of the board, interface to optional side board
J-EXP2
Utility EXPansion interface connector 2 (CAN2.0B, I2C, PS/2 KB/MS, SDIO, UART),
interface to optional side board. This connector is not populated by default.
J-HSE
High Speed Expansion connector (up to 4 x SATA, 4 x USB), interface to optional low
profile mezzanine module or side board
J-LVDS
LVDS flat panel interface connector, interface to optional side board. This connector
is not populated by default.
J-PCIE
PCI Express® expansion interface connector, interface to optional side board
MSD1
MicroSD Card holder (on the bottom side)
XDP
CPU Debug Port
1)
1)
Bottom connector populated on customers request only
Pin Headers
P-FPH
Pin header suitable for Front Panel Handle switch cable harness
P-ISP
PLD glue logic device programming connector, not populated
Jumpers
P-GP
Jumper to reset UEFI BIOS Setup to EKF defaults
P-RTC
Jumper to reset RTC circuitry (part of CPU), not populated
© EKF
-13-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Microprocessor
The PC2-LIMBO is equipped with an Intel® AtomTM E6xx processor (code name Tunnel Creek). These
low power processors provide integrated graphics and memory controller, which results in a very
efficient platform design. The E6xx almost can be considered as a single-chip solution, since all
functions of a typical north-bridge have been moved to the CPU, as well as some I/O circuitry of a
typical south-bridge.
There is no proprietary chipset expansion interface provided with the E6xx processor. Instead,
additional I/O can be attached to four ordinary PCI Express® lanes. The PC2-LIMBO is equipped with
several PE based I/O controllers, e.g. SATA and Ethernet, and the EG20T PCH (Platform Controller
Hub) for multi-function I/O.
As of current, the AtomTM E6xx family comprises processors from 0.6GHz up to 1.6GHz core
frequency, either commercial or industrial temperature grade, as listed below. The processors are
housed in a FCBGA package for direct soldering to the PCB, i.e. the chip cannot be removed or
changed by the user.
Intel® AtomTM Processors Supported
Processor
Number
Core Clock
Gfx
Clock
Operating
Temperature
TDP
CPU ID
Stepping
SPEC
Code
E620
0.6GHz
320MHz
0°C to +70°C
3.3W
20661h
B1
SLJ32
E640
1.0GHz
320MHz
0°C to +70°C
3.6W
20661h
B1
SLJ33
E660
1.3GHz
400MHz
0°C to +70°C
3.6W
20661h
B1
SLJ34
E680
1.6GHz
400MHz
0°C to +70°C
4.5W
20661h
B1
SLJ35
E620T
0.6GHz
320MHz
-40°C to +85°C
3.3W
20661h
B1
SLJ36
E640T
1.0GHz
320MHz
-40°C to +85°C
3.6W
20661h
B1
SLJ37
E660T
1.3GHz
400MHz
-40°C to +85°C
3.6W
20661h
B1
SLJ38
E680T
1.6GHz
400MHz
-40°C to +85°C
4.5W
20661h
B1
SLJ39
© EKF
-14-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Thermal Considerations
The PC2-LIMBO is equipped with a low profile passive heatsink for fan-less conductive cooling, thus
maintaining the 4HP envelope of a typical CompactPCI® card. In many situations a forced vertical
airflow through the system enclosure (e.g. bottom mount fan unit) may be not required, due to the
low power consumption of the AtomTM E6xx series, but should be considered to further improve the
reliability and life-time of the assembly unit, especially for higher ambient temperatures.
The table above (Intel® AtomTM Processors Supported) indicates the calculated maximum power
consumption (TDP = Thermal Design Power) of a particular processor. According to experience, the
CPU power consumption is significantly lower when executing typical Windows® or Linux tasks.
The AtomTM E6xx processors provide thermal based Enhanced SpeedStep® technology. This enables
dynamic switching between multiple core voltages and frequencies depending on core temperature
and currently required performance. The processors are able to reduce their core speed and core
voltage in multiple steps. This leads to an additional reduction of power consumption, resulting in less
heating. This mode of lowering the processor core temperature is called Thermal Monitor 2.
Another way to reduce power consumption is to modulate the processor clock (Thermal Monitor 1
mode). When this feature is enabled and the die temperature is reaching the pre-determined
activation temperature, the processor clocks are stopped for a period of time and then allowed to run
full speed for a period of time (duty cycle ~30% – 50%) until the processor temperature drops below
the activation temperature. However, while saving considerable power consumption, the data
throughput of the processor is also reduced.
The temperature at which the on-die thermal sensor triggers the Intel® Thermal Monitor 1 or Intel®
Thermal Monitor 2 is set during the fabrication of the processor (can be read-out by software).
The thermal management features are enabled under BIOS control (please observe related BIOS menu
entries). By default the BIOS of the PC2-LIMBO enables the Thermal Monitor 2 mode which is the
most efficient.
© EKF
-15-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
PC2-LIMBO with Custom Specific Cooler Plate
© EKF
-16-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Main Memory
The AtomTM E6xx processor is equipped with an internal memory controller, suitable for a maximum
capacity of 2GB DDR2, operated at 800MHz. The memory controller supports only soldered-down
DRAM (no SODIMM).
The PC2-LIMBO is provided with either 1GB or 2GB memory, organized as 8 devices 1Gbit or 2Gbit
each, soldered directly to the board (Memory Down). Please consider your actual need for a sufficient
memory capacity before ordering.
Graphics Subsystem
The Intel® Atom™ Processor E6xx series provides an integrated 2D/3D graphic engine that performs
pixel shading and vertex shading within a single hardware accelerator. The processing of pixels is
deferred until they are determined to be visible, which minimizes access to memory and improves
render performance. In addition, the E6xx series supports video decoding (MPEG2, MPEG4, VC1,
WMV9, H.264, and DivX), and also encoding (MPEG4, H.264).
The PC2-LIMBO is provided with a DVI-D (digital video interface) front panel connector attached to
the E6xx SDVO port via a PanelLink transmitter, for a maximum resolution up to 1920x1080.
Known issues: As of current, Intel® Embedded Graphics Drivers for the Atom™ Processor E6xx series
must be used together with Windows 7. Ubuntu may not work as expected with respect to the
graphics interface. Video decoding with Linux may be slow.
© EKF
-17-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
LAN Subsystem
The Ethernet LAN subsystem provided on the PC2-LIMBO is comprised of two independent Gigabit
Ethernet ports. Both Ethernet ports are wired to correspondent RJ45 jacks located in the front panel,
but can be also managed for usage through the rear I/O interface on J2/P2, on an individual base by
BIOS settings. Two bicoloured LEDs integrated into each RJ45 connector in the front panel are used
to signal the LAN link, the LAN connection speed and LAN activity status of the related Ethernet port,
regardless whether it is routed to the front panel jack or to the backplane connector J2 for rear I/O.
There are two different Ethernet controllers populated on the PC2-LIMBO board; while port 1 is
associated with the Platform Controller Hub, port 2 is realized with additional PCI Express® based
silicon. This is the reason why both Ethernet ports offer slightly differing features.
The Platform Controller Hub EG20T (PCH, formerly named Topcliff IOH) contains a Gigabit Ethernet
Media Access Controller (GMAC), which is connected to an external RGMII PHY (Reduced Gigabit
Media Independent Interface) for 1000 BASE Ethernet. The PC2-LIMBO employs the Marvell
88E1116R Gigabit Ethernet Transceiver, which in turn is wired across a signal switch (under BIOS
control) either to the upper RJ45 front panel Ethernet jack, or to J2 according to the CPCI 2.30 PlusIO
standard. The maximum Jumbo frame size of the PCH EG20T is 10kB.
For the second Ethernet port the Intel® 82574IT GbE controller was chosen, which provides an
integrated PHY and many built-in high performance features such as 802.1as TimeSync. It is wired
across a signal switch (under BIOS control) either to the lower RJ45 front panel Ethernet jack, or to J2
according to the CPCI 2.30 PlusIO standard. The maximum Jumbo frame size of the 82574 is 9kB.
© EKF
-18-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Serial ATA Interface (SATA)
The PC2-LIMBO provides up to six 3Gbps serial ATA (SATA) ports, derived from three independent
SATA ressources.
The EG20T Platform Controller Hub (PCH) is provided with an integrated SATA two-port controller.
One of these ports is in use for the CFast™ host connector, the other is routed to first SATA port of
the mezzanine card connector J-HSE (High Speed Expansion). Only these two SATA channels are
suitable for attachment of a SATA boot medium.
Another two PCI Express® based SATA controllers (JMB362, dual-channel each) are populated in
addition on the PC2-LIMBO. By default these channels are connected for rear I/O usage to the J2
PlusIO backplane connector, resulting in a maximum of 4 SATA channels for backplane usage (e.g.
hybrid backplane in a CompactPCI® Serial system). As an ordering option, two SATA ports can be
wired instead to the mezzanine connector J-HSE, as the 2nd and 3rd SATA port, which allows use of
the C47-MSATA mezzanine storage module. As of current, the BIOS does not contain boot code for
these dedicated SATA controllers. SATA boot therefore is possible either from the Cfast™ card, or
from mezzanine storage modules such as the C42-SATA, which use the PCH bound 1st SATA channel
of the J-HSE connector. The additional SATA controllers are not available with the CompactPCI®
Classic manufacturing option of the PC2-LIMBO.
A LED named HD located in the front panel, signals disk activity status of any of the SATA devices.
The CFast™ host connector accommodates a modern Flash based Solid State Drive (SSD), with
dimensions of a CompactFlash card, but SATA based interface. CFast™ cards are available from several
manufacturers for the extended (industrial) temperature range, and can also be considered as boot
device and system drive in small ruggedized systems.
J-EXP
J-HSE
J2
Intel®
I/O Hub
UHM
PC2-LIMBO
Intel®
Atom™
CFast™ Socket
Memory
Down
P-ISP
Dual
GbE
Memory
Down
USB
H1
+5V
J-EXP2
DVI-D
USB
J-PCIE
CFast™ Card
© EKF
ekf.com
J1
J-LVDS
PC2-LIMBO
CFast™ Card
© EKF • ekf.com
© EKF
-19-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
As an option, the PC2-LIMBO can be equipped with a low profile mezzanine storage card such as the
C42-SATA in addition, with an on-board 1.8-inch Micro SATA SSD, or the C47-MSATA, with two
mSATA SSD modules. As of current, both mezzanine alternates offer higher storage capacity
compared to a CFast™ card. A low profile mezzanine card can be used with or w/o simultaneously
utilizing the CFast™ on-board card, and maintains the 4HP profile of the PC2-LIMBO.
Further more, a variety of side cards is available, suitable for mounting on the PC2-LIMBO in a 4HP
(20.32mm) distance (resulting n 8HP front panel width for the assembly). Some of these side boards
can accommodate a SATA drive, e.g. a 2.5-inch SSD. If more than one SATA channel is required for
a side card with respect to the J-HSE mezzanine connector, the PC2-LIMBO must not be ordered with
4 SATA channels for backplane usage.
In addition to the EG20T PCH with its two SATA ports, two JMicron JMB362 dual-channel SATA
controllers are stuffed on the PC2-LIMBO. Depending on the SATA channel in use, either Intel® SATA
drivers for the EG20T have to be installed, and/or SATA drivers from the JMicron website.
J-EXP
J-HSE
C42-SATA
J-PCIE
Mounting Shell
J-EXP2
PC2-LIMBO
1.8-Inch
SATA
CFast Socket
Intel®
Atom™
Memory
Down
Solid State Drive
P-ISP
Memory
Down
Dual
GbE
UHM
© EKF
USB
J2
Intel®
I/O Hub
EKF Part No. 710.9.HDD_18.E • Drawing No. 4483
DVI-D
USB
H1
+5V
© EKF
ekf.com
J1
J-LVDS
PC2-LIMBO
with SATA SSD Module
© EKF • ekf.com
© EKF
-20-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
PCI Express® Interface
The AtomTM E6xx processor is provided with 4 x 1 PCI Express® (aka PCIe or PE) lanes for I/O
expansion. Since this would be insufficient for a CPCI CPU card, the PC2-LIMBO is equipped with an
8-port PE packet switch in addition, for an adequate quantity of PCI Express® lanes available:
<
<
<
<
1 lane (CPU) connected to the Intel® EG20T Topcliff PCH
1 lane (CPU) connected to the PLX PE to PCI bridge (J1 CompactPCI® Classic backplane connector)
1 lane (CPU) connected to the Intel® 82574IT GbE controller
1 lane (CPU) connected to the 1:7 PE packet switch PLX PEX8608 (not populated together with the CPCI
Classic Version of the PC2-LIMBO)
<
<
4 lanes (switch) available on the J2 rear I/O connector (e.g. for hybrid CompactPCI® Serial systems)
1 lane (switch) available on the mezzanine expansion card connector J-PCIE (derived directly from the
PCH on the CPCI Classic Version of the PC2-LIMBO)
2 lanes (switch) required for the 2 x JMB362 on-board SATA controllers
<
Please note, that the CompactPCI® Classic version of the PC2-LIMBO does not provide the PCIe packet switch,
and consequently will not be equipped with the JMB362 SATA controllers.
Universal Serial Bus (USB)
The EG20T (Topcliff) PCH supports a maximum of six USB 2.0 host ports. Since this would be
insufficient for a CompactPCI® CPU card, the PC2-LIMBO is equipped with two on-board 1:4 USB
hubs in addition, for an adequate quantity of USB ports available:
<
<
<
<
2 ports (PCH) connected to front panel USB receptacles
2 ports (PCH) connected to the mezzanine card legacy expansion connector J-EXP
1 port (PCH) connected to an USB hub (J2 usage)
1 port (PCH) connected to an USB hub (J-HSE usage)
<
<
4 ports (hub) connected to the rear I/O backplane connector J2
4 ports (hub) connected to the mezzanine card high speed expansion connector J-HSE
The PCH incorporates 6 OHCI controllers, and 2 EHCI controllers, for low, full and high speed
operation.
© EKF
-21-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Utility Interfaces
Besides the high speed mezzanine interface connectors J-HSE and J-PCIE, the PC2-LIMBO is provided
with the utility interface expansion connector sockets J-EXP(1) and J-EXP2. These connectors comprise
several interfaces, which may be useful for system expansion on a mezzanine card, as an option:
<
<
<
<
<
<
<
<
<
CAN
I2C
HD Audio
LPC (Low Pin Count)
PS/2 KBD/MS
SDIO (SDHC Card)
SMBus
2 x UART
2 x USB
The SMbus is controlled by the E6xx Tunnel Creek processor. The SMbus signal lines on the J-EXP
utility expansion connector are buffered and can be switched on/off under software control (CPU
GPIO) in order to isolate external components in case of an I2C address conflict. Please note: As of
current, the SMbus has been permanently disabled.
Another I2C controller is integrated into the EG20T Topcliff PCH and wired to J-EXP2.
The HD Audio port requires an additional audio codec, as provided e.g. on the CCO-CONCERT side
card. The UART channels are TTL level based and thus suitable for wiring to either EIA-232 or EIA-485
transceivers on the mezzanine card. The CAN port needs an external ISO transceiver for compliance.
EKF offers a variety of mezzanine expansion boards (side cards), to be attached on top of the
PC2-LIMBO, thus typically resulting in a assembly unit with 8HP or even 12HP common front panel.
Custom specific mezzanine cards can be designed to your needs - please contact sales@ekf.com.
© EKF
-22-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Real-Time Clock
The Atom™ E6xx processor is equipped with a time-of-day clock and calendar. Battery backup is
provided by a BR2032 Lithium Carbon monofluoride coin cell. The battery is suitable for the extended
operating temperature range (-40°C to +85°C). Under normal conditions1, replacement of the battery
should be superfluous during lifetime of the board. In applications were the use of a battery is not
permitted, a SuperCap (double layer capacitor, gold cap) with 1.0F capacity can be stuffed instead of
the battery, sufficient for ~6h data retention.
1
Due to a known issue of the E6xx processor, the BR2032 battery lifetime may be significantly
reduced, down to ~1 year as a worst case scenario. As of current Intel&reg; classifies the status of this
erratum as ‘no fix’. Since the battery will be discharged only when power is disconnected from the
CPU card, lifetime in typical industrial applications may not be affected (24h continuous-running
operation in mind).
SPI Flash
The BIOS is stored in flash device with Serial Peripheral Interface (SPI). 8MByte of BIOS code and user
data may be stored nonvolatile in this SPI Flash.
The SPI Flash contents can be updated by a DOS or Linux based tool. This program and the latest
PC2-LIMBO BIOS binary are available from the EKF website. Read carefully the enclosed instructions.
If the programming procedure fails e.g. caused by a power interruption, the PC2-LIMBO may no more
be operable. In this case you would possibly have to send in the board, because the Flash device is
directly soldered to the PCB and cannot be changed by the user.
© EKF
-23-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Reset
The PC2-LIMBO is provided with several supervisor circuits to monitor supply rails like the CPU core
voltage, 1.5V, 3.3V or 5V. This circuitry is responsible also to generate a clean power-on reset signal.
The handle within the front panel contains a micro switch that is used to generate a power button
event. By pressing the handle's red push button a pulse is triggered.
Animated GIF: www.ekf.com/c/ccpu/img/reset_400.gif
NOTE: To prevent the board to cause a power button override, the handle should be closed
immediately after unlocking the front panel handle. A power button override is triggered by opening
the front panel handle for at least 4 seconds, which results in bringing the board to power state S5.
In case of entering this state, unlock and lock the front panel handle a 2nd time to reenter normal
power state S0 again. See also section 'PG (Power Good) LED' to see how the PC2-LIMBO indicates the
different power states.
An alternative (and recommended) way to generate a system reset is to activate the signal PRST#
located on CompactPCI connector J2 pin C17. Pulling this signal to GND will have the same effect as
to push a reset switch.
The healthy state of the PC2-LIMBO is indicated by the LED PG (Power Good) located in the front
panel. This bicoloured LED signals different states of the board (see section below). As soon as this
LED begins to lite green, all power voltages are within their specifications and the reset signal has
been deasserted.
© EKF
-24-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
<4s
5
2
© EKF
© EKF • ekf.com
1
6
3
7
4
8
-25-
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User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Watchdog
An important reliability feature is the watchdog function, which is programmable by software. The
PC2-LIMBO is provided with a watchdog contained directly in the E6XX Tunnel Creek CPU. Another
watchdog is available from the on-board SIO.
© EKF
-26-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Front Panel LEDs
The PC2-LIMBO is equipped with three LEDs which can be observed from the front panel. These LEDs
are labelled according to their primary meaning, but should be interpreted altogether for system
diagnosis.
LED
Status
PG
Green/Red
GP
Green/Red
HD
Green
OFF
GREEN
ON
Sleep State S4/S5
OFF
OFF
ON
Sleep State S3
GREEN
RED BLINK
X
After Reset
GREEN
X
X
Board Healthy and in S0 State
GREEN
GREEN /
GREEN BLINK
X
GP LED under Software Control
(IOH GPIO5)
GREEN
X
ON / BLINK
SATA Activity
RED
X
X
Hardware Failure - Power Fault
RED BLINK
X
X
Software Failure
PG
RST
G-ETH
GP
HD
© EKF
-27-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
PG (Power Good) LED
The PC2-LIMBO offers a bicolour LED labelled PG located within the front panel. After system reset,
this LED defaults to signal different power states:
<
<
<
<
Off
Green
Red steady
Red blink
Sleep state S3, S4 or S5 (S3/S4 deactivated by BIOS as of current, S5 = Soft Off)
Healthy
Hardware failure
Software failure
To enter the PG LED state Software Failure, an appropriate service request by software SMI must be
called. The PG LED remains in this red blinking state until the next SMI request is made. After that it
falls back to its default function.
GP (General Purpose) LED
This programmable bicolour LED can be observed from the PC2-LIMBO front panel. Its status is
controlled by the on-board glue-logic (ispMACH 4128). The GP LED is not dedicated to any particular
hardware or firmware function with exception of special power states of the LED PG as described
above. Nevertheless, a red blinking GP LED is an indication that the BIOS code couldn't start.
The GP LED is provided mainly for user programming, e.g. can reflect the status of dedicated GPIOs
under user software control, or any combination of other board internal signals available at the
ispMACH programmable logic inputs. Please contact EKF in order to discuss your requirements in
detail.
While the CPU card is controlled by the BIOS firmware, the GP LED is used to signal board status
information. For details please refer to www.ekf.com/p/pc2/firmware/biosinfo.txt. After successful
operating system boot, the GP LED may be freely used by customer software.
HD (Hard Disk Activity) LED
The PC2-LIMBO offers a green LED marked as HD placed within the front panel. This LED signals
activity on any device attached to the SATA ports. This includes the EG20T IOH SATA ports as well as
the JMicron SATA controllers.
The marking HD denotes a hard disk drive, but needless to say that also activity from solid state drives
(SSD) such as a CFast card would light the HD LED. As previously described, this LED may vary its
function dependent on the state of the LED PG.
© EKF
-28-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Hot Swap Detection
The CompactPCI® specification added the signal ENUM# to the PCI bus to allow board hot
swapping. This signal is routed to a GPIO (GPIO1 PEX8112 PCIe to PCI bridge) . An interrupt can be
requested, if ENUM# changes, caused by insertion or removal of a peripheral board.
Note that the PC2-LIMBO itself is not a hot swap device, because it makes no sense to remove the
system controller from a CompactPCI® system. However, it is capable to recognize the hot swap of
peripheral boards and to start software that is performing any necessary system reconfiguration.
Power Supply Status (DEG#, FAL#)
Power supply failures may be detected before the system crashes down by monitoring the signals
DEG# or FAL#. These active low lines are additions to the CompactPCI® specification and may be
driven by the power supply. DEG# signals the degrading of the supply voltages, FAL# there possible
failure. On the PC2-LIMBO the signals FAL# and DEG# are routed to PCH GPIOS.
+5V Only Design
The PC2-LIMBO has been designed for +5V only operation. For system cost reduction, the on-board
switching regulator from +5V to +3.3V can be used to feed-back +3.3V through connector J1 to the
CompactPCI® backplane in systems with a single +5V power supply.
The on-board 3.3V switching regulator has been designed for a maximum of 10A load in total. Since
the +3.3V rail is shared with on-board components and optional mezzanine cards, the maximum
current available for peripheral boards on the CompactPCI® backplane depends on the actual
configuration of the PC2-LIMBO. Typically, the PC2-LIMBO would be able to source up to 5A into the
backplane +3.3V power rail. This would require a soldered 15A fuse to be populated as an option,
placed in series between the on-board +3.3V rail and the backplane connector J1 3.3V pins.
By default, the soldered 15A fuse is not populated. For systems with a dual-rail power supply which
provides +3.3V to the CPCI backplane, the fuse should be removed (if populated), in order to avoid
a current back-driving situation. Under normal conditions, back-driving +3.3V power from the
backplane to the board and vice versa should be permissible, but EKF cannot guarantee this, due to
numerous available system power supplies with different characteristics.
© EKF
-29-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Battery Options
By default, the PC2-LIMBO is equipped with a battery holder, which is suitable for a BR2032 coin type
Lithium cell. For rugged applications, a soldered cell may be populated. A third stuffing alternate
would be a gold cap.
Coin Cell Holder (Default Stuffing)
Please remove the isolating plastic sheet from the coin cell which may be affixed in order to avoid
premature discharge of the battery.
Unfortunately, Intel® describes a severe issue with the battery, which is not expected to be fixed with
future versions of the Tunnelcreek processor. There exists a leakage path, which may reduce the
typical lifetime of a cell to <1year, when the PC2-LIMBO is not powered (during storage, or when the
system is shut down).
The 1.0F rechargable double layer capacitor can be populated as an alternate for such applications,
where a battery would not be allowed. Data retention however would be limited to <8h typically.
Low profile C4* mezzanine modules cannot be used when the supercap is stuffed due to its height.
Due to a known issue of the E6xx processor, the BR2032 battery lifetime may be significantly reduced,
down to ~1 year as a worst case scenario. As of current Intel&reg; classifies the status of this erratum
as ‘no fix’. Since the battery will be discharged only when power is disconnected from the CPU card,
lifetime in typical industrial applications may not be affected (24h continuous-running operation in
mind).
© EKF
-30-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Option Soldered Lithium Cell
Option Supercapacitor
© EKF
-31-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Mezzanine Side Board Options
The PC2-LIMBO is provided with several stacking connectors for attachment of a mezzanine expansion
module (aka side board), suitable for a variety of readily available mezzanine cards (please refer to
www.ekf.com/c/ccpu/mezz_ovw.pdf for a more comprehensive overview). EKF furthermore offers
custom specific development of side boads (please contact sales@ekf.de).
CAN 2.0b
FlatUART GPIO
Panel
SDIO PS/2
LPC USB
SMBus
HD Audio
3 x SATA
4 x USB
J-EXP
J-HSE
PCI Express®
x1
J-PCIE
J-EXP2
DVI-D
H1
+5V
USB
USB
J2
Intel®
I/O Hub
UHM
PC2-LIMBO
Intel®
Atom™
CFast Socket
Memory
Down
P-ISP
Memory
Down
Dual
GbE
© EKF
ekf.com
J1
J-LVDS
PC2-LIMBO
Mezzanine Connectors
© EKF • ekf.com
LVDS
FlatFlatPanel
Panel
Most mezzanine expansion modules require an assembly height of 8HP in total, together with the
CPU carrier board (resulting from two cards at 4HP pitch each).
In addition, cropped low profile mass storage mezzanine modules can be attached to J-HSE, which
maintain the 4HP envelope, for extremely compact systems. Furthermore these small size modules
may be combined with the full-size expansion boards (that means an assembly comprised of 3 PCBs).
Related Documents Mezzanine Modules and Side Cards
© EKF
C4x Series Mezzanine Storage Modules
www.ekf.com/c/ccpu/c4x_mezz_ovw.pdf
Mezzanine Modules Overview
www.ekf.com/c/ccpu/mezz_ovw.pdf
The EKF Mezzanine Module Concept
www.ekf.com/c/ccpu/cpci_mezzanine_evolution.pdf
-32-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
J-EXP(1)
I/F Type
Controller
LPC (Low Pin Count)
CPU
HD Audio
CPU
SMBus
CPU (buffered)
2 x USB 2.0
PCH
J-EXP2 (not poulated by default)
I/F Type
Controller
CAN
PCH
I2C
PCH
PS/2 KBD/MS
SIO
SDIO (SDHC Card)
PCH
2 x UART
PCH
J-HSE
I/F Type
Controller
SATA1
PCH
SATA2, SATA3
JMB362 (option only, on request)
4 x USB 2.0
USB Hub
J-LVDS (not poulated by default)
I/F Type
Controller
LVDS Video
CPU
J-PCIE
© EKF
I/F Type
Controller
PCI Express®
PE Switch (CompactPCI® PlusIO)
PCH (CompactPCI® Classic version)
-33-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
PC2-LIMBO (Top View)
© EKF
-34-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
CompactPCI® PlusIO Option
The PICMG® 2.30 CompactPCI® PlusIO specification defines the usage of rear I/O pins of the 32-bit
CompactPCI® system slot for high-speed serial signals. For these high-speed signals a new J2
connector (3M UHM type) has been introduced, which is compatible to the classic 2.0mm hard metric
connector J2, and in addition is suitable for high speed differential signals.
The main advantage of the combination of legacy PCI (J1/P1) and modern serial buses on J2/P2 is to
realize hybrid backplanes. Hence, the CompactPCI® PlusIO standard helps to define a simple migration
path from parallel PCI systems to modern serial, point-to-point interconnected systems such as
CompactPCI® Serial (PICMG® CPCI-S.0, draft/proposal as of current).
PICMG® 2.30 defines just the system slot J2/P2 extension. With respect to high speed signal peripheral
boards – depending on their particular interfaces – CompactPCI® Serial, CompactPCI® Express or
PICMG® 2.16 cards may be combined in a system, in addition to 32-bit classic CompactPCI® boards,
controlled across J1/P1.
The PC2-LIMBO is provided with all CompactPCI® PlusIO communication channels defined by
PICMG® 2.30 via the connector J2/P2:
<
<
<
<
Four PCIe Lanes 2.5GT/s
Up to four SATA Ports 3GT/s
Four USB 2.0 Ports
Up two Gigabit Ethernet Ports
J-EXP
J-HSE
USB
H1
+5V
J-EXP2
DVI-D
USB
J-PCIE
J2
Intel®
I/O Hub
UHM
PC2-LIMBO
CFast Socket
P-ISP
Memory
Down
Memory
Down
© EKF
ekf.com
Peripheral
Boards
or
PICMG® 2.30
Rear I/O
Module
Intel®
Atom™
Dual
GbE
CPCI-S.0
2 x GbE
4 x PCIe
4 x SATA
4 x USB
J1
J-LVDS
PC2-LIMBO
J2 UHM Rear I/O Connector
© EKF • ekf.com
J2 UHM Connector According to PICMG 2.30 PlusIO
Warning: Do not operate the PC2-LIMBO in systems with a 64-bit CompactPCI® backplane. The J2/P2
pin assignments of a 64-bit CPCI backplane differ substantially from a CompactPCI® PlusIO backplane,
which may result in a short circuit situation.
© EKF
-35-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
The PC2-LIMBO can be combined with a CompactPCI® PlusIO rear I/O transition module, such as the
PR1-RIO, which is provided with I/O connectors (on-board and back-panel) for all high speed signals.
Sample PlusIO RIO Module
Related Documents CompactPCI® PlusIO & CompactPCI® Serial
© EKF
CompactPCI® PlusIO & Serial Overview
www.ekf.com/s/cpci_serial_overview.pdf
CompactPCI® PlusIO Home
www.ekf.com/p/plus.html
CompactPCI® Serial Home
www.ekf.com/s/serial.html
-36-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Hybrid systems can be configured by means of a backplane with CompactPCI® Serial slots in addition
to classic CompactPCI® slots.
CompactPCI 32-Bit
Peripheral Slots
PICMG® 2.30 PlusIO
Removable Power Supply
CompactPCI® PlusIO & CompactPCI® Serial
Hybrid Backplane
CPCIS.0
Peripheral Slots
© EKF • ekf.com
Sample Hybrid Backplane
Sample Hybrid Backplane
© EKF
-37-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
The PC2-LIMBO can be used as a system controller for a CompactPCI® Serial system, by means of a
suitable hybrid backplane.
Rugged Industrial Systems
Rugged Industrial Systems
© EKF
-38-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
CompactPCI® Classic Option
As a PC2-LIMBO manufacturing option, all J2 rear I/O connections according to the PICMG® 2.30
CompactPCI® PlusIO specification can be removed, by not filling related components (e.g. PCIe switch,
USB hub, Ethernet magnetics). This option is useful for systems equipped with a 32-bit legacy 2.0
CompactPCI® backplane. Please refer to www.ekf.com/liste/liste_21.html#PC2 for manufacturing
option SKUs available.
Please note, that open PCB copper traces to J2 are still existent, which may downgrade the P2
backplane signal quality (stubs).
© EKF
-39-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Simplified Block Diagram
PC2-LIMBO
GbE
GbE
Top Mount
Card Holder
DVI Video
CPU Card
PICMG® CompactPCI® PlusIO
Front
Panel
I/O
GbE
1
GbE
2
SPI
Flash
Panel
Link
CFast™
88E
1116R
82574
IT
2
PE
CPU
DDR2
667/800
PE
82574
SPI
1.6GHz E680(T)
1.3GHz E660(T)
1.0GHz E640(T)
0.6GHz E620(T)
SDVO
SATA
USB
RGMII
25
640
SPI-ROM
Tunnel Creek
Intel®
Atom™
PE
EG20T
Topcliff
Intel®
PCH
Queensbay Platform
PE
PE
LPC • HD Audio
SIO
KBD/MS
J-EXP2
LVDS
SATA
USB
USB
CAN • UART • SDHC
SDHC
PCIe
Bridge
USB
1:4
Micro
SDHC
PCI
Manufacturing Option
CompactPCI® Classic
CAN • UART • SDHC
PS/2 KBD MS
2
4
J2 Rear I/O Removed
Bottom Mount
Card Holder
Mezzanine
Side Card
I/O
Backplane
PlusIO
CompactPCI
ekf.com
-40-
© EKF
DDR2 Soldered
BIOS
Block Diagram PC2-LIMBO CompactPCI 2.0 Option
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Installing and Replacing Components
Before You Begin
Warnings
The procedures in this chapter assume familiarity with the general terminology associated with
industrial electronics and with safety practices and regulatory compliance required for using and
modifying electronic equipment. Disconnect
the system from its power source and from
any telecommunication links, networks or
modems before performing any of the
procedures described in this chapter. Failure
to disconnect power, or telecommunication
links before you open the system or perform
any procedures can result in personal injury
or equipment damage. Some parts of the
system can continue to operate even though
the power switch is in its off state.
Caution
Electrostatic discharge (ESD) can damage components. Perform the procedures described in this
chapter only at an ESD workstation. If such a
station is not available, you can provide
some ESD protection by wearing an
antistatic wrist strap and attaching it to a
metal part of the system chassis or board
front panel. Store the board only in its
original ESD protected packaging. Retain the
original packaging (antistatic bag and
antistatic box) in case of returning the board to EKF for rapair.
© EKF
-41-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Installing the Board
Warning
This procedure should be done only by qualified technical personnel. Disconnect the system from its
power source before doing the procedures described here. Failure to disconnect power, or
telecommunication links before you open the system or perform any procedures can result in personal
injury or equipment damage.
Typically you will perform the following steps:
C
Switch off the system, remove the AC power cord
C
Attach your antistatic wrist strap to a metallic part of the system
C
Remove the board packaging, be sure to touch the board only at the front panel
C
Identify the related CompactPCI slot (peripheral slot for I/O boards, system slot for CPU boards,
with the system slot typically most right or most left to the backplane)
C
Insert card carefully (be sure not to damage components mounted on the bottom side of the
board by scratching neighboured front panels)
C
A card with onboard connectors requires attachment of associated cabling now
C
Lock the ejector lever, fix screws at the front panel (top/bottom)
C
Retain original packaging in case of return
© EKF
-42-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Removing the Board
Warning
This procedure should be done only by qualified technical personnel. Disconnect the system from its
power source before doing the procedures described here. Failure to disconnect power, or
telecommunication links before you open the system or perform any procedures can result in personal
injury or equipment damage.
Typically you will perform the following steps:
C
Switch off the system, remove the AC power cord
C
Attach your antistatic wrist strap to a metallic part of the system
C
Identify the board, be sure to touch the board only at the front panel
C
unfasten both front panel screws (top/bottom), unlock the ejector lever
C
Remove any onboard cabling assembly
C
Activate the ejector lever
C
Remove the card carefully (be sure not to damage components mounted on the bottom side
of the board by scratching neighboured front panels)
C
Store board in the original packaging, do not touch any components, hold the board at the
front panel only
Warning
Do not expose the card to fire. Battery cells and other components could explode
and cause personal injury.
© EKF
-43-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
EMC Recommendations
In order to comply with the CE regulations for EMC, it is mandatory to observe the following rules:
C
The chassis or rack including other boards in use must comply entirely with CE
C
Close all board slots not in use with a blind front panel
C
Front panels must be fastened by built-in screws
C
Cover any unused front panel mounted connector with a shielding cap
C
External communications cable assemblies must be shielded (shield connected only at one end
of the cable)
C
Use ferrite beads for cabling wherever appropriate
C
Some connectors may require additional isolating parts
Reccomended Accessories
© EKF
Blind CPCI Front
Panels
EKF Elektronik
Widths currently available
(1HP=5.08mm):
with handle 4HP/8HP
without handle
2HP/4HP/8HP/10HP/12HP
Ferrit Bead Filters
ARP Datacom,
63115 Dietzenbach
Ordering No.
102 820 (cable diameter 6.5mm)
102 821 (cable diameter 10.0mm)
102 822 (cable diameter 13.0mm)
Metal Shielding
Caps
Conec-Polytronic,
59557 Lippstadt
Ordering No.
CDFA 09 165 X 13129 X (DB9)
CDSFA 15 165 X 12979 X (DB15)
CDSFA 25 165 X 12989 X (DB25)
-44-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Replacement of the Battery
When your system is turned off, a battery maintains the voltage to run the time-of-day clock and to
keep the values in the CMOS RAM. The battery should last during the lifetime of the PC2-LIMBO
(please note a known E6XX CPU chip issue which is not fixed as of current). For replacement of a
soldered Lithium cell, the old battery must be desoldered, and the new one soldered. We suggest that
you send back the board to EKF for soldered battery replacement.
Coin Cell Holder (Default Stuffing)
Option Soldered Lithium Cell
Warning
Danger of explosion if the battery is incorrectly replaced or shorted. Replace only with
the same or equivalent type. Do not expose a battery to fire.
© EKF
-45-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Technical Reference
Local PCI Devices
The following table shows the on-board PCI devices and their location within the PCI configuration
space.
Bus #
Device #
Function #
Vendor ID
Device ID
Description
0
0
0
0x8086
0x4114
E6xx Host Bridge
0
1
0
0x8086
0x8183
E6xx Configuration Unit
0
2
0
0x8086
0x4108
E6xx Graphics Controller
0
3
0
0x8086
0x8182
E6xx Video Multimedia
0
17
0
0x8086
0x8184
E6xx PCIe Port 1
0
18
0
0x8086
0x8185
E6xx PCIe Port 2
0
19
0
0x8086
0x8180
E6xx PCIe Port 3
0
1A
0
0x8086
0x8181
E6xx PCIe Port 4
0
1F
0
0x8086
0x8186
E6xx LPC Bridge
01
00
0
0x8086
0x8800
EG20t PCIe Port
02
00
0
0x8086
0x8801
EG20T Packet Hub
02
00
1
0x8086
0x8802
EG20T Ethernet MAC
02
00
2
0x8086
0x8803
EG20T GPIO
02
02
0
0x8086
0x8804
EG20T USB Host1 OHCI 0
02
02
1
0x8086
0x8805
EG20T USB Host1 OHCI 1
02
02
2
0x8086
0x8806
EG20T USB Host1 OHCI 2
02
02
3
0x8086
0x8807
EG20T USB Host1 EHCI
02
02
4
0x8086
0x8808
EG20T USB Device (Client)
02
04
0
0x8086
0x8809
EG20T SDIO Controller 1
02
04
1
0x8086
0x880A
EG20T SDIO Controller 2
02
06
0
0x8086
0x880B
EG20T SATA Controller
02
08
0
0x8086
0x880C
EG20T USB Host0 OHCI 0
02
08
1
0x8086
0x880D
EG20T USB Host0 OHCI 1
02
08
2
0x8086
0x880E
EG20T USB Host0 OHCI 2
02
08
3
0x8086
0x880F
EG20T USB Host0 EHCI
02
0A
0
0x8086
0x8810
EG20T DMA
02
0A
1
0x8086
0x8811
EG20T UART 0
02
0A
2
0x8086
0x8812
EG20T UART 1
02
0A
3
0x8086
0x8813
EG20T UART 2
02
0A
4
0x8086
0x8814
EG20T UART 3
© EKF
-46-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Bus #
Device #
Function #
Vendor ID
Device ID
Description
02
0C
0
0x8086
0x8815
EG20T DMA
02
0C
1
0x8086
0x8816
EG20T SPI
02
0C
2
0x8086
0x8817
EG20T I2C
02
0C
3
0x8086
0x8818
EG20T CAN
02
0C
4
0x8086
0x8819
EG20T IEEE1588
03
00
0
0x8086
0x10D3
Ethernet Controller N2 (82574)
04
00
0
0x10B5
0x8608
PCIe Switch (PEX8608)
05
01
0
0x10B5
0x8608
PCIe Switch (PEX8608)
05
04
0
0x10B5
0x8608
PCIe Switch (PEX8608)
05
05
0
0x10B5
0x8608
PCIe Switch (PEX8608)
05
06
0
0x10B5
0x8608
PCIe Switch (PEX8608)
05
07
0
0x10B5
0x8608
PCIe Switch (PEX8608)
05
08
0
0x10B5
0x8608
PCIe Switch (PEX8608)
05
09
0
0x10B5
0x8608
PCIe Switch (PEX8608)
08
00
0
0x197B
0x2362
PCIe - SATA Controller (JMB 362)
0C
00
0
0x197B
0x2362
PCIe - SATA Controller (JMB 362)
0D
00
0
0x10B5
0x8112
PCIe to PCI Bridge (8112)
1)
2)
© EKF
Depends on BIOS settings
Bus number can vary depending on the PCI enumeration schema implemented in BIOS
-47-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Local SMB Devices
The PC2-LIMBO contains devices that are attached to the System Management Bus (SMBus). These are
the clock generation chip, the SPD EEPROMs for the on-board memory, a general purpose serial
EEPROM and a supply voltage and temperature controlling device in particular. Additional devices may
be connected to the SMBus via the CompactPCI backplane signals IPMB SCL (J1 B17) and IPMB SDA
(J1 C17), or pins 29/30 of the mezzanine expansion connector J-EXP.
Address
Description
0x58
Hardware Monitor/CPU Temperature Sensor (LM87)
0xA0
SPD of Onboard Memory
0xAE
General Purpose EEPROM
0xD3
Power and Clock supply IC (DA6011)
Hardware Monitor LM87
Attached to the SMBus, the PC2-LIMBO is provided with a hardware monitor (LM87). This device is
capable to observe the board and an the memory temperature, as well as several supply voltage rails
with a resolution of 8 bit. The following table shows the mapping of the voltage inputs of the LM87
to the corresponding supply voltages of the PC2-LIMBO:
Input
Source
Resolution
[mV]
Register
AIN1
E6xx Processor Core Voltage VCC
9.8
0x28
AIN2
E6xx Graphics Core Voltage VNN
9.8
0x29
VCCP1
+1.5V
14.1
0x21
VCCP2/D2-
+1.8V
14.1
0x25
+2.5V/D2+
+1.05V
13
0x20
+3.3V
+3.3V
17.2
0x22
+5V
+5V
26
0x23
+12V
GND
62.5
0x24
Beside the continuous measuring of temperatures and voltages the LM87 may compare these values
against programmable upper and lower boundaries. As soon as a measurement violates the allowed
value range, the LM87 can request an interrupt via the GPE# (General Purpose Event) input of the
Tunnel Creek CPU (which may result in a system control interrupt).
© EKF
-48-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
GPIO Usage
GPIO Usage Tunnel Creek CPU
GPIO Usage Tunnel Creek CPU
GPIO
Type
Tol.
Function
Description
GPIO_SUS0
I/O
3.3V
N/A
Not used on PC2
GPIO_SUS1
O
3.3V
BKLTEN
LVDS backlight enable (not implemented)
GPIO_SUS2
O
3.3V
BKLTCTL
LVDS backlight control (not implemented)
GPIO_SUS3
O
3.3V
VGA_DDCCL
LVDS DDC CLK (not implemented)
GPIO_SUS4
I/O
3.3V
VGA_DDCDA
LVDS DDC DATA (not implemented)
GPIO_SUS5
O
3.3V
NIC2_SWITCH
Switch Ethernet Controller NC2 to Front / Rear
GPIO_SUS6
O
3.3V
NIC1_SWITCH
Switch Ethernet Controller NC1 to Front / Rear
GPIO_SUS7
I
3.3V
EXP_SMI#
Expansion Interface SMI Request (J-EXP Pin15)
GPIO_SUS8
O
3.3V
NIC2_OFF#
Disable Ethernet Controller NC2
GPIO 0
I/O
3.3V
N/A
Not used on PC2 (pulled via resistor to 3.3V)
GPIO 1
I
3.3V
CPCI_INTP_33#
Compact PCI Interrupt Request Line INTP
GPIO 2
O
3.3V
J1_SMB_ISOLATE#
Isolate local SMBus of CPCI IPMB
LOW: IPMB disconnected from SMBus
HIGH: IPMB connected to SMBus
GPIO 3
O
3.3V
EXP_SMB_ISOLATE#
Isolate local SMBus of J-EXP
LOW: J-EXP disconnected from SMBus
HIGH: J-EXP connected to SMBus
GPIO 4
I/O
3.3V
N/A
Not used on PC2 (pulled via resistor to GND)
© EKF
-49-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
GPIO Usage Topcliff PCH
GPIO Usage Topcliff PCH
GPIO
1)
2)
Type
Tol.
Function
Description
GPIO 0
3.3V 1)
CPCI_DEG#
Compact PCI Power Degeneration Line DE#
GPIO 1
3.3V 1)
CPCI_FAL#
Compact PCI Power Failure Line FAL#
GPIO 2-4
3.3V 1)
HW_REV0...2
GPIO 5
3.3V 1)
IOH_GPLED
General Purpose LED Control (via PLD)
GPIO 6
3.3V 1)
PLD_SDA
Local Option Reg Interface (within PLD)
GPIO 7
3.3V 1)
PLD_SCL
Local Option Reg Interface (within PLD)
GPIO 8
3.3V 2)
CPCI_INTSEN
Connect SERIRQ to Compact PCI Line INTS
LOW: SERIRQ disconnected from INTS
HIGH: SERIRQ connected to INTS
GPIO 9
3.3V 2)
CPCI_SYSEN#
Sense Compact PCI System Slot Enable Line SYSEN#
GPIO 10
3.3V 2)
GP_JUMPER
Reset UEFI BIOS Setup, Jumper P-GP
GPIO 11
3.3V 2)
CPCI_CLKBUF_EN
Enables CPCI Clocks
LOW: Compact PCI Clocks disabled
HIGH: Compact PCI Clocks enabled
GPIO 4/3/2
000
001
...
111
PCB Revision
0
1
...
7
Active in S0 and S3, 5V tolerant.
Active in S0 only.
© EKF
-50-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
GPIO Usage PE Switch
GPIO Usage PCI Express® Switch
GPIO
Type
Tol.
Function
Description
GPIO 0
O
3.3V
CFAST_CDI
CFast Card detect input
GPIO 1
I
3.3V
CFAST_CDA
CFast Card detect output
GPIO 2-16
I/O
3.3V
N/A
Not used on PC2
GPIO 29
I/O
3.3V
N/A
Not used on PC2
GPIO 30
I/O
3.3V
N/A
Not used on PC2
GPIO Usage PE to PCI Bridge
GPIO Usage PEX8112
GPIO
Type
Tol.
Function
Description
GPIO 0
I/O
3.3V
N/A
Not used on PC2 (pulled via resistor to 3.3V)
GPIO 1
I
3.3V
CPCI_ENUM_33#
Compact PCI System Enumeration Line ENUM#
GPIO 2
I/O
3.3V
N/A
Not used on PC2 (pulled via resistor to 3.3V)
GPIO 3
I/O
3.3V
N/A
Not used on PC2 (pulled via resistor to 3.3V)
© EKF
-51-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Configuration Jumpers
CMOS Reset (P-GP)
The jumper P-GP may be used to reset the UEFI BIOS configuration to a default state. The UEFI BIOS
on PC2-LIMBO stores parts of its configuration values in an area within the BIOS flash, e.g. the actual
boot devices. Using this jumper is only necessary, if it is not possible to enter the setup of the BIOS. To
reset the settings mount a jumper on P-GP and perform a system reset. As long as the jumper is
stuffed the BIOS will use the default CMOS values after any system reset. To get normal operation
again, the jumper has to be removed.
1
P-GP
P-GP
Function
Jumper Removed 1)
normal operation
Jumper Installed
UEFI BIOS configuration
reset to factory default
RTC Reset (P-RTC)
The jumper P-RTC may be used to reset certain register bits of the real time clock (part of the Tunnel
Creek CPU). This can be necessary under rare conditions (e.g. battery undervoltage), if the CPU fails to
enter the BIOS POST after power on. Note that installing of jumper P-RTC will neither perform the
clearing of the CMOS RAM values nor resets the time and date register values of the real time clock.
To reset the RTC core the board must be removed from the system rack. Short-circuit the pins of
P-RTC for about 1 sec. Thereafter reinstall the board to the system and switch on the power. It is
important to accomplish the RTC reset while the board has no power. The pin header P-RTC is not
stuffed on the PC2-LIMBO by default.
1
P-RTC
1)
P-RTC
Function
Jumper Removed 1)
No RTC reset performed
Jumper Installed
RTC reset performed
This setting is the factory default.
© EKF
-52-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Connectors
Caution
Some of the internal connectors provide operating voltage (3.3V and 5V) to devices inside the system
chassis, such as internal peripherals. Not all of these connectors are short circuit protected. Do not use
these internal connectors for powering devices external to the computer chassis. A fault in the load
presented by the external devices could cause damage to the board, the interconnecting cable and
the external devices themselves.
Front Panel Connectors
USB
PG
G-ETH
GP
© EKF • draft - do not scale • ekf.com
D
V
I
HD
PC2-LIMBO
© EKF
-53-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
PC2-LIMBO (Front View)
© EKF
-54-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
DVI Video Connector
The Intel® Atom™ E6xx Tunnel Creek processor is equipped with an integrated graphics controller,
which supports LVDS and SDVO display ports. On the PC2-LIMBO only the SDVO channel is used for
video output. The LVDS port is wired to the optional mezzanine connector J-LVDS, for future use on
custom specific side cards.
For compatibility with all types of DVI cables, the video front panel receptacle is a DVI-I style
connector. However, the connector comprises the digital signals only, which results in DVI-D
functionality. The digital video output is derived from the SDVO graphics port of the CPU, via a
PanelLink transmitter.
DVI
261.70.029.01 • © EKF • ekf.com
17
24
9
16
1
17
TX0-
9
TX1-
1
TX2-
18
TX0+
10
TX1+
2
TX2+
19
GND
11
GND
3
GND
20
12
4
21
13
5
22
GND
14
DDC_POW 1)
6
DDC_SCL
23
TXC+
15
GND
7
DDC_SDA
24
TXC-
16
DVI_HP
8
VSYNC
8
c3
c1
c6
c5
c4
c2
DVI
c3
BLUE
c1
RED
c6
GND
c5
GND
c4
HSYNC
c2
GREEN
signals marked grey/italic: not supported
1)
+5V via self resetting fuse 0.75A
Attachment of a single digital monitor (flat panel display) should be done by means of a DVI to DVI
cable (DVI-D single link cable is sufficient).
For attachment of a single analog (VGA) monitor to the J-DVI receptacle, there are both adapters and
also adapter cables available from DVI to the legacy HD-SUB15 VGA style connector.
© EKF
-55-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
USB Connectors
The Intel® EG20T (Topcliff) PCH (Platform Controller Hub) incorporates a six-port USB 2.0 host
controller. Two ports are directly available on the PC2-LIMBO front panel (type A receptacle), for
attachment of external USB devices.
USB Ports 1/2
1
4
#270.20.04.2
©EKF • ekf.com
1)
© EKF
1
POW 1)
2
USB DATA (N)
3
USB DATA (P)
4
GND
+5V via 1.5A current-limited electronic power switch. Power rail may be switched off by
software independently for each port.
-56-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Ethernet Connectors
The PC2-LIMBO provides two independent Gigabit Ethernet controllers, each with its own MAC
address.
The EG20T PCH contains an Ethernet MAC, which is complemented by an additional on-Board PHY,
which is wired to the upper RJ-45 Ethernet jack 1 (if not redirected to the PlusIO J2 connector for RIO
usage).
The second Ethernet controller is a 82574IT with integrated PHY, which is wired to the lower RJ-45
Ethernet jack 2 (if not redirected to the PlusIO J2 connector for RIO usage).
Both Ethernet ports are routed individually across two-way analog signal switches, for front panel
usage, or optional redirection to the backplane connector J2 (for employment on a RIO module such
as the PR1-RIO, or utilization on a CompactPCI® Serial backplane). While the front panel Ethernet
jacks comprise internal magnetics, the PC2-LIMBO is equipped in addition with discrete magnetics
modules for rear I/O.
The direction (front panel or RIO) of either Gigabit Ethernet port is controlled via two processor GPIO
lines, which are managed by the BIOS: GPIO_SUS6 switches the Ethernet port 1, and GPIO_SUS5
controls port 2. The default routing is front panel usage. Please adjust the PC2-LIMBO BIOS settings
for an alternate configuration.
Gigabit Ethernet Ports 1/2 (RJ-45)
Port 1
1
1
270.02.08.5
Port 2
1
NC1_MDX0+
2
NC1_MDX0-
3
NC1_MDX1+
4
NC1_MDX2+
5
NC1_MDX2-
6
NC1_MDX1-
7
NC1_MDX3+
8
NC1_MDX3-
1
NC2_MDX0+
2
NC2_MDX0-
3
NC2_MDX1+
4
NC2_MDX2+
5
NC2_MDX2-
6
NC2_MDX1-
7
NC2_MDX3+
8
NC2_MDX3-
The lower green LED indicates LINK established when continuously on, and data transfer (activity)
when blinking. If the lower green LED is permanently off, no LINK is established. The upper
green/yellow dual-LED signals the link speed 1Gbit/s when lit yellow, 100Mbit/s when lit green, and
10Mbit/s when off. The RJ-45 LEDs remain in use, regardless of an optional port redirection to the
rear I/O connector J2.
© EKF
-57-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Mezzanine Connectors & Card Sockets
CFast™ Host Connector CF1
By default, the PC2-LIMBO is provided with a CFast™ host connector. It is suitable for CFast™ cards,
which have the same dimensions as CompactFlash™ cards, but are operated in SATA mode. Industrial
CFast™ SSD cards are available up to 64GB as of current. The SATA channel available on the CFast™
socket is derived directly from the Topcliff EG20T PCH. Since SATA based SSD modules are fast and
reliable over the industrial temperature range, a CFast™ card can be used as boot device in many
applications.
A guiding rail is provided to simplify card insertion. Once installed, the CFast™ card will have to be
locked manually by a retainer latch (EKF part #218.5.024.29), in order to withstand shock and
vibration. The latching part may be supplied loosely (not assembled on the PC2-LIMBO, depending on
your order), and hence should be snapped onto the CFast™ socket first, before being used. When the
PC2-LIMBO is combined with a low profile mezzanine module such as the C42-SATA, the latching
retainer will be replaced by a mounting bar (EKF part #710.9.CFA.B).
There is some ambiguity about the top and bottom side of a CFast™ module - be sure to insert the
card properly into the socket. For several CFast™ SSD card brands this would require the module to be
inserted with its label facing downwards (to the PCB). However, leading suppliers (e.g. Swissbit)
attach the label vice versa on their cards, which requires that such CFast™ modules have to be
inserted with their label on top. Anyway, the finger grip, which is recessed into the cards end, should
be up. Forced wrong insertion may cause permanent damage to the CFast™ card and the CFast™ host
connector.
J-EXP
J-HSE
J2
Intel®
I/O Hub
UHM
PC2-LIMBO
Intel®
Atom™
CFast™ Socket
Memory
Down
P-ISP
Dual
GbE
Memory
Down
USB
H1
+5V
J-EXP2
DVI-D
USB
J-PCIE
CFast™ Card
© EKF
ekf.com
EKF Drawing
No. 4460
EKF Part No.
710.9.HDD_18.F
J1
J-LVDS
PC2-LIMBO
CFast™ Card
© EKF • ekf.com
CFast Card Fixed by Mounting Bar (Padding Support for Mezzanines)
© EKF
-58-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
CF1 CFast™ Host Connector • 218.5.024.1
Part No. 218.5.024.21 • CFast™ Host Connector
© EKF • ekf.com
1)
2)
© EKF
S1
GND
S2
SATA1_TXP
S3
SATA1_TXN
S4
GND
S5
SATA1_RXN
S6
SATA1_RXP
S7
GND
PC1
CDI
PC2
GND
PC3
TBD
PC4
TBD
PC5
TBD
PC6
TBD
PC7
GND
PC8
LED1 (PHYRDY Signal) 2)
PC9
LED2 (HDDA Signal) 2)
PC10
IO1
PC11
IO2
PC12
IO3
PC13
+3.3V 1)
PC14
+3.3V 1)
PC15
GND
PC16
GND
PC17
CDO
Overcurrent protected by 0.75A self resetting fuse. Alternate stuffing for +5V on request.
LED outputs not necessarily supported by a particular CFast™ card brand, routed to
PC2-LIMBO on-board PLD
-59-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
If the CFast™ host connector is not in use in an application, please remove the latching retainer
assembly carefully from the socket (strut the snap-in clips on both sides). As an alternate, use an
adhesive tape to fix the CFast™ retaining lever in its normal (locking) position. Otherwise, under worst
conditions, the latching spring could cause a short circuit situation when unintentionally moving
(forced by shock or vibration) and touching a PCB in the neighboured board slot of the system rack.
From PCB Rev. 4 off, the CFast™ card is secured by a small retainer block (screw locked), as can be
seen below.
Suitable CFast™ SSD Cards
16GB, -40°C to +85°C
872.50.016.02
32GB, -40°C to +85°C
872.50.032.02
64GB, -40°C to +85°C
872.50.064.02
Known issue: Most CFast™ Cards (e.g. Delkin, Swissbit and other brands) work as expected. However,
EKF had also cards under test which showed up strange behaviour. EKF therefore strongly
recommends to validate thoroughly a chosen CFast™ card before ordering. If in doubt, please contact
support@ekf.com.
© EKF
-60-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Expansion Interface J-EXP(1)
This connector conveys a variety of I/O signals, which are in use on several mezzanine side cards, such
as the LPC (Low Pin Count) interface (required e.g. for a secondary SIO), the HD Audio (Azalia) port
(connects to an audio codec), and the SMBus, all under control of the E6xx processor. Two USB ports
are available in addition, which are derived directly from the Topcliff PCH.
J-EXP is referred here also as J-EXP1 in order to distinguish more clearly between J-EXP(1) and J-EXP2.
J-EXP
J-EXP (Exploded View)
© EKF
-61-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
J-EXP-T (J-EXP-B optinal)
2
© EKF 276.53.040.01 ekf.com
1
40
1.27mm
Socket
1)
2)
3)
GND
1
2
+3.3V 1)
PCI_CLK (33MHz)
3
4
RST_PLC#
LPC_AD0
5
6
LPC_AD1
LPC_AD2
7
8
LPC_AD3
LPC_FRM#
9
10
100k PU LPC_DRQ#
GND
11
12
+3.3V 1)
LPC_SERIRQ
13
14
WAKE#
EXP_SMI#
15
16
SIO_CLK (14.3MHz)
NC
17
18
BKLTCTL (CPU GPIO_SUS2) 3)
KBRST#
19
20
BKLTEN (CPU GPIO_SUS1) 3)
GND
21
22
+5V 1)
USB_EXP2-
23
24
USB_EXP1-
USB_EXP2+
25
26
USB_EXP1+
USB_EXP_OC#
27
28
DBRESET#
EXP_SCL 2)
29
30
EXP_SDA 2)
GND
31
32
+5V 1)
HDA_SDOUT
33
34
HDA_SDIN0
HDA_RST#
35
36
HDA_SYNC
HDA_CLK
37
38
HDA_SDIN1
SPEAKER
39
40
VDDEN (CPU GPIO_SUS0) 3)
Power rail switched on in state S0 only
Connected to SMBus via buffered switch, isolated after reset
To be used in connection with J-LVDS
The expansion interface header footprint is available on both sides of the PC2-LIMBO, top (J-EXP-T)
and bottom (J-EXP-B). The bottom side connector is stuffed only on customers request.
WARNING: Neither the +3.3V pins, nor the +5V pins are protected against a short circuit event. The
connector J-EXP1 therefore should be used only for attachment of an approved expansion side card.
The maximum current flow across these pins should be limited to <1A per power pin.
© EKF
-62-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Expansion Interface J-EXP2
This connector conveys several I/O signal groups, for optional usage on a suitable mezzanine side
card. These signals are comprised of a PS/2 mouse and keyboard port (derived from an on-Board SIO),
and further a CAN interface, two UART channels, an I2C and a SDIO port (all derived from the EG20T
Topcliff PCH). The CAN and UART lines on the J-EXP2 are 3.3V TTL-level based (UART pins are not 5V
tolerant) and require external transceivers for attachment to ISO 11898 (CAN) or EIA-232/485
peripherals.
The connector J-EXP2 is not populated by default. Please contact sales@ekf.com for availability.
J-EXP2
2
© EKF 276.53.040.01 ekf.com
1
40
1.27mm
Socket
1)
2)
GND
1
2
+3.3V 1)
PS/2 MS_DAT
3
4
PS/2 KB_DAT
PS/2 MS_CLK
5
6
PS/2 KB_CLK
CAN_TX
7
8
I2C_CLK
CAN_RX
9
10
I2C_DAT
GND
11
12
+3.3V 1)
UART0_CTS
13
14
UART0_DCD
UART0_DSR
15
16
UART0_DTR
UART0_RI
17
18
UART0_RTS
UART0_RXD
19
20
UART0_TXD
GND
21
22
+5V 1)
UART1_RXD
23
24
UART1_TXD
SDIO1_PWR0
25
26
SDIO1_LED
SDIO1_WP 2)
27
28
SDIO1_CD# 2)
SDIO1_CLK
29
30
SDIO1_CMD
GND
31
32
+5V 1)
SDIO1_DATA0
33
34
SDIO1_DATA1
SDIO1_DATA2
35
36
SDIO1_DATA3
SDIO1_DATA4
37
38
SDIO1_DATA5
SDIO1_DATA6
39
40
SDIO1_DATA7
Power rail switched on in state S0 only
Terminated by resistors 10k P/U +3.3V
WARNING: Neither the +3.3V pins, nor the +5V pins are protected against a short circuit event. The
connector J-EXP2 therefore should be used only for attachment of an approved expansion side card.
The maximum current flow across these power pins should be limited to <1A per pin.
© EKF
-63-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
High Speed Expansion Connector J-HSE
Expansion Connector J-HSE and Low Profile Module
J-HSE can be used for attachment of a mezzanine card, either a small size low profile module, or an
Eurocard size side board. Several low profile modules are available for on-board storage (CFast, Micro
SATA, mSATA, CompactFlash, USB), in addition to the the CFast host connector provided on the
PC2-LIMBO. Low profile modules fit into the 4HP profile of the carrier board, in contrast to side cards,
which require at least 4HP system space in addition. The front panel width (8HP or even 12HP) for
CPU board and side card is used for additional front I/O connectors, and most side cards can be
equipped with a 2.5-inch SSD/HDD.
J-HSE Used for Side Card (8HP Assembly Unit)
© EKF
-64-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
J-HSE is a high speed mezzanine connector, which conveys up to 3 x SATA channels and 4 x USB lines.
The SATA channel 1 has been derived from the PCH, whereas the SATA channels 2 and 3 are
connected to a JMB362 SATA RAID controller. The USB ports come from an 1:4 on-board USB hub.
High Speed Expansion J-HSE
a1 b1
s10
© EKF • 275.90.08.068.01 • ekf.com
1.00mm Pitch High Speed Female Connector (H=8mm)
s1
s9
s18
a25 b25
1)
2)
3)
4)
5)
6)
GND
a1
b1
SATA_HSE1_TXP 3) 5)
a2
b2
SATA_HSE3_TXP 4)
5) 6)
SATA_HSE1_TXN 3) 5)
a3
b3
SATA_HSE3_TXN 4)
5) 6)
GND
a4
b4
SATA_HSE1_RXN 3) 5)
a5
b5
SATA_HSE3_RXN 4)
5) 6)
SATA_HSE1_RXP 3) 5)
a6
b6
SATA_HSE3_RXP 4)
5) 6)
GND
a7
b7
SATA_HSE2_TXP 4)
5) 6)
a8
b8
SATA_HSE2_TXN 4)
5) 6)
a9
b9
a10
b10
GND
GND
GND
GND
GND
SATA_HSE2_RXN 4)
5) 6)
a11
b11
SATA_HSE2_RXP 4)
5) 6)
a12
b12
GND
a13
b13
GND
USB_HSE2_P
a14
b14
USB_HSE4_P
USB_HSE2_N
a15
b15
USB_HSE4_N
GND
a16
b16
GND
USB_HSE1_P
a17
b17
USB_HSE3_P
USB_HSE1_N
a18
b18
USB_HSE3_N
GND
a19
b19
GND
USB_HSE_OC#
a20
b20
USB_HSE_OC#
USB_HSE_OC#
a21
b21
USB_HSE_OC#
+3.3VS 1)
a22
b22
+5VS 1)
+3.3VS 1)
a23
b23
+5VS 1)
+3.3VA 2)
a24
b24
+5VA 2)
RSVD
a25
b25
RSVD
Power rail switched on in state S0 only (Switched)
Power rail on with system power (Always)
This SATA channel is derived from the PCH
These SATA channels are derived from a JMB362 dual-channel SATA RAID controller
(option, not available with CPCI Classic versions of the PC2-LIMBO)
All TX/RX designations with respect to the SATA controller
SATA channels 2 and 3 not available concurrently with J2 Rear I/O - stuffing option on
request
WARNING: The +3.3V/+5V power pins are not protected against a short circuit event. The connector J-HSE therefore
should be used only for attachment of an approved expansion side card. The maximum current flow through these power
pins should be limited to <0.5A per pin.
© EKF
-65-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
C40-CFA • CompactFlash Mezzanine Module
C41-CFAST • CFast Card Mezzanine
© EKF
-66-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
PC2-LIMBO w. C41-CFAST Low Profile Mezzanine Storage Module
© EKF
-67-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
C42-SATA • Solid State Drive Mezzanine Module
© EKF
-68-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
C43-SATA • Internal Connectors Mezzanine Module
PC2-LIMBO w. C43-SATA Low Profile Module
© EKF
-69-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
C44-SATA • 2.5-Inch HDD/SSD Carrier Side Card (8HP F/P Width)
C45-SATA • Front Panel Loading SSD Mezzanine Module (8HP F/P Width)
© EKF
-70-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
C47-MSATA • Low Profile RAID Storage Mezzanine Module
PC2-LIMBO w. C47-MSATA Mezzanine Storage Module (Option on Request)
© EKF
-71-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
RAID Option (on Request) with C47-MSATA Dual Mini Card SSD
© EKF
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ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Expansion Connector J-LVDS
The connector J-LVDS is only available as an option on request, for usage of the E6xx processor LVDS
graphics port on a suitable future custom mezzanine card.
On a mezzanine card, the LVDS signals can be used for direct attachment of a suitable display, or can
be converted into DVI, HDMI or VGA, as required. The LVDS graphics port is independent from the
Tunnel Creek E6xx SDVO port (DVI), for a true dual-screen solution. Please contact sales@ekf.com for
a customer specific mezzanine module according to your needs.
J-LVDS
269.1.020.002
© EKF • ekf.com
2
1
Mezzanine High Speed
Socket Connector
GND
1
2
GND
LVDS_DATA_P2
3
4
LVDS_DATA_P3
LVDS_DATA_N2
5
6
LVDS_DATA_N3
GND
7
8
GND
LVDS_DATA_P1
9
10
DDC_DAT (GPIO_SUS4)
LVDS_DATA_N1
11
12
DDC_CLK (GPIO_SUS3)
GND
13
14
GND
LVDS_DATA_P0
15
16
LVDS_CLK_P
LVDS_DATA_N0
17
18
LVDS_CLK_N
GND
19
20
GND
Please refer in addition to the J-EXP connector description, for the backlight and power control signals
BKLTEN, BKLTCTL, and VDDEN.
© EKF
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ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
PCI Express® Expansion Header J-PCIE
J-PCIE is a high speed connector, which is used widely for EKF side cards with PCI Expess® based I/O
controllers. The PC2-LIMBO provides one PE link/lane (1x1) on this connector. Despite most EKF
mezzanine side boards are wired as 1x4, they can be operated also from a single PE lane due to autonegotiation, but there may exist also side cards which are not fully compatible with the PC2-LIMBO.
The PCIe lane is derived from a PE packet switch, which is provided on the CompactPCI® PlusIO
versions of the PC2-LIMBO. For the CompactPCI® Classic versions of the PC2-LIMBO however, the
PE packet switch is not populated, and the PCIe lane available on J-PCIE is derived directly from the
Topcliff PCH.
J-PCIE
GND
1
2
GND
+5V 1)
3
4
+3.3V 1)
+5V 1)
5
6
+3.3V 1)
GND
7
8
GND
PE_CLKP
9
10
RST_PLC#
PE_CLKN
11
12
PE_WAKE#
GND
13
14
GND
PE_1TP
15
16
PE_1RP
PE_1TN
17
18
PE_1RN
GND
19
20
GND
269.1.020.002
© EKF • ekf.com
2
1
Mezzanine High Speed
Socket Connector
1)
Power rail switched on in state S0 only
WARNING: The +3.3V/+5V power pins are not protected against a short circuit event. The connector
J-PCIE therefore should be used only for attachment of an approved expansion side card. The
maximum current flow through these power pins should be limited to <0.5A per pin.
J-PCIE Expansion Connector
© EKF
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ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
MSD1 microSD Card Holder
By default, the PC2-LIMBO is provided with a microSD card socket, located on the boards bottom
side. MicroSDHC cards are available in several speed classes, which describe the minimum sustained
data transfer rate. The PC2-LIMBO supports class 6 memory cards (6MB/s minimum read/write
operation).
MicroSD and microSDHC cards are available for the extended or industrial temperature range, with a
capacity of up to 32GB as of current. Industrial grade microSDHC memory cards can be ordered as
accessory with the PC2-LIMBO.
Insert the microSDHC card carefully into the holder (card contacts facing downwards to the PCB, card
labelling visible when inserting, observe also the arrow marking). Forced wrong insertion may cause
permanent damage to the microSD card and the host connector. The microSDHC card can be fixed by
a short M2.5 screw (threaded PCB insert provided adjacent to the card)..
microSDHC Host Connector • 218.6.008.1
218.6.008.1 • microSD Card Holder
© EKF • ekf.com
1
DAT2
2
DAT3
3
CMD
4
+3.3V
5
CLK
6
GND
7
DAT0
8
DAT1
Suitable microSDHC Flash Memory Cards
© EKF
8GB, speed class 6, -25°C to +85°C
888.1.006.0008.00
16GB, speed class 6, -25°C to
+85°C
888.1.006.0016.00
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User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
PC2-LIMBO Bottom View (Card Holder Near F/P Handle)
Threaded Insert
© EKF
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ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Pin Headers & Debug
Front Panel Handle Microswitch Header P-FPH
The jumper P-FPH is used for attachment of an external SPDT switch. By default, P-FPH is connected
across a short cable harness to a microswitch, which is integrated into the PC2-LIMBO front panel
handle (ejector lever). The switch performs a power button event (e.g. system shutdown) by shortcircuiting the pins 1 and 3 of P-FPH when activated (hold unlock button of front panel handle
depressed momentarily).
P-FPH
# 276.02.003.11
© EKF • ekf.com
1
1
black
Microswitch Pole (Common), Wired to PLD
2
red
Microswitch Throw - F/P Handle Locked Position, NC
3
yellow
Microswitch Throw - F/P Handle Unlocked Position, Wired to GND
PLD Programming Header P-ISP
The PC2-LIMBO is provided with a powerful PLD (in-System Programmable Logic Device) which
replaces legacy glue logic. The programming header P-ISP is normally not stuffed (in use for
manufacturing only). Its footprint is situated at the bottom side of the board.
P-ISP
240.1.08.I • © EKF • ekf.com
key
© EKF
1
+3.3V
2
TDO
3
TDI
4
NC
5
KEY
6
TMS
7
GND
8
TCK
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User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Processor Debug Header XDP1
The PC2-LIMBO may be equipped with a 26-position processor debug header for hard- and software
debugging (specified by Intel® as XDP-SFF-26 Pin Platform Connection). The connector is suitable for
installation of a flat flex cable (FFC), in order to attach an JTAG debugger (emulator) such as the
Arium ECM-XDP3. An adapter (ITP-XDP-SFF-26) is required in addition to convert the 26-pin
XDP-SFF-26 Pin connector to the standard 60-pin XDP.
The header XDP1 would be mounted on the PCB bottom side, but is not stuffed by default.
XDP Processor Debug Connector • 269.1.026.902
269.1.026.902 • FFC Connector
© EKF • ekf.com
© EKF
1
OBSFN_A0 (PREQ#)
2
OBSFN_A1 (PRDY#)
3
GND
4
OBSDATA_A0 (BPM3)
5
OBSDATA_A1 (BPM2)
6
GND
7
OBSDATA_A2 (BPM1)
8
OBSDATA_A3 (BPM0)
9
GND
10
HOOK0 (PWRMODE0)
11
HOOK1 (PWRMODE1)
12
HOOK2 (PWRMODE2)
13
HOOK3
14
HOOK4 (BCLKP)
15
HOOK5 (BCLKN)
16
VCCOBS_AB (+1.05V)
17
HOOK6 (CPU_RST#)
18
HOOK7 (DBRESET#)
19
GND
20
TDO
21
TRST#
22
TDI
23
TMS
24
TCK1
25
GND
26
TCK0 (TCK)
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User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Backplane Connectors
Two hard metric backplane connectors are specified as J1/P1 and J2/P2 by the PICMG® CompactPCI
2.0 and 2.30 (PlusIO). J1 conveys the 32-bit PCI parallel bus, and J2 provides primarily the Rear I/O
signals defined by the PlusIO specification.
f e
d c b a
25
f e
d c b a
1
© EKF 250.0522.10.10 ekf.com
J2 2mm Hard Metric Connector
© EKF 250.0525.10.01 ekf.com
J1 2mm Hard Metric Connector
22
1
J2 is a high speed UHM connector, suitable for Gigabit Serial I/O as defined by the PICMG® 2.30
CompactPCI® PlusIO Specification. This specification defines the I/O assignment of the J2/P2 32-bit
CompactPCI® System Slot connector in order to extend the parallel PCI bus with high-speed serial
busses. CompactPCI® PlusIO defines the support of PCI, PCI Express, Ethernet, SATA/SAS and USB
concurrently. In addition to the parallel PCI bus architecture this I/O specification allows the use of the
CompactPCI® system slot to provide a simple star architecture based on the specified serial bus
standards. The PlusIO definition is fully backward compatible to 32-bit CompactPCI® and will
interoperate with existing 32-bit systems. This standard allows the implementation of hybrid
backplanes: CompactPCI® with CompactPCI® Express and/or CompactPCI® Serial. A 32-bit
CompactPCI® PlusIO System can be used as a system slot for CompactPCI® Serial or CompactPCI®
Express as well.
J2 UHM (Top)
J1 (Bottom)
© EKF
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ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
CompactPCI® Backplane Connector J1
J1
A
B
C
D
E
25
5V
REQ64# 2)
ENUM# 1)
3.3V
5V
24
AD1
5V
V(I/O)
AD0
ACK64# 2)
23
3.3V
AD4
AD3
5V
AD2
22
AD7
GND
3.3V
AD6
GND/M66EN
AD5
3)
C/BE0#
21
3.3V
AD9
AD8
20
AD12
GND
V(I/O)
AD11
AD10
19
3.3V
AD15
AD14
GND
AD13
18
SERR# 1)
GND
3.3V
PAR
C/BE1#
17
3.3V
IPMB SCL 4)
IPMB SDA 4)
GND
PERR# 1)
16
DEVSEL# 1)
GND
V(I/O)
STOP# 1)
LOCK# 1)
15
3.3V
FRAME# 1)
IRDY# 1)
BD_SEL# 7)
TRDY# 1)
14
13
KEY AREA
12
11
AD18
AD17
AD16
GND
C/BE2#
10
AD21
GND
3.3V
AD20
AD19
9
C/BE3#
GND
AD23
GND
AD22
8
AD26
GND
V(I/O)
AD25
AD24
7
AD30
AD29
AD28
GND
AD27
6
REQ# 1)
GND
3.3V
CLK
AD31
5
BRSVP1A5 5)
BRSVP1B5 5)
RST#
GND
GNT0#
4
IPMB PWR
GND
V(I/O)
INTP 1)
INTS 1)
3
INTA# 1)
INTB# 1)
INTC# 1)
5V
INTD# 1)
2
TCK 5)
5V
TMS 5)
TDO 5)
TDI 5)
1
5V
-12V 6)
TRST# 5)
+12V
5V
1)
2)
3)
4)
5)
6)
7)
1k PU resistor to V(I/O), other PU values (e.g. 2.7k for V(I/O)=+3.3V) available on request
Not used on PC2-LIMBO, but has 1k PU to V(I/O), other PU values on request
4.99k PU by default, can be optionally fixed to GND to force 33MHz operation (0R PD)
3.0k PU to J1 pin A4 IPMBPWR
Not connected
Connected to a decoupling capacitor, not used on PC2-LIMBO
Input connected to on-board power sequencing logic, driven low by an external hot swap
controller to enable power on, or permanently pulled low on the backplane
The PC2-LIMBO has been designed for +5V only operation. The board can feed +3.3V to the
backplane (please refer to chapter ‘+5V Only Design’ for details).
© EKF
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ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
CompactPCI® Backplane Connector J2 (PlusIO)
The PC2-LIMBO can provide up to 2 x GbE, 4 x PCIe, 4 x SATA and 4 x USB for rear I/O across J2. The
Gigabit Ethernet rear I/O ports are shared with the front panel jacks (setup redirection via BIOS). The
PE lanes are derived from an on-board PE switch (4 links by 1 lane each). With respect to SATA, the
channels 3/4 are available either via J2 (stuffing option on request only), or through the mezzanine
connector J-HSE (default). SATA 1/2 and SATA 3/4 each have their own dual-port SATA controller
(software RAID capable). The rear I/O USB ports are generated from an on-board 1:4 USB hub.
On CompactPCI® Classic versions of the PC2-LIMBO all components wired for RIO have been
removed, and the UHM J2 connector will be replaced by a normal HM connector.Please note, that
open PCB copper traces to J2 are still existent, which may downgrade the P2 backplane signal quality
(stubs).
J2
A
B
C
D
E
22
GA4 2)
GA3 2)
GA2 2)
GA1 2)
GA0 2)
21
CLK6
GND
2_ETH_B+
1_ETH_D+
1_ETH_B+
20
CLK5
GND
2_ETH_B-
1_ETH_D-
1_ETH_B-
19
GND
GND
2_ETH_A+
1_ETH_C+
1_ETH_A+
18
2_ETH_D+
2_ETH_C+
2_ETH_A-
1_ETH_C-
1_ETH_A-
17
2_ETH_D-
2_ETH_C-
PRST# 1)
REQ6# 1)
GNT6#
16
4_PE_CLK-
2_PE_CLK+
DEG# 1)
GND
reserved 2)
15
4_PE_CLK+
2_PE_CLK-
FAL# 1)
REQ5# 1)
GNT5#
14
3_PE_CLK-
1_PE_CLK+
4_PE_CLKE#
SATA_SCL 2)
reserved 2)
13
3_PE_CLK+
1_PE_CLK-
3_PE_CLKE#
SATA_SDO 2)
SATA_SL 2)
12
4_PE_RX00+
1_PE_CLKE#
2_PE_CLKE#
SATA_SDI 2)
4_SATA_RX+ 4)
11
4_PE_RX00-
4_PE_TX00+
4_USB2+
4_SATA_TX+ 4)
4_SATA_RX- 4)
10
3_PE_RX00+
4_PE_TX00-
4_USB2-
4_SATA_TX- 4)
3_SATA_RX+ 4)
9
3_PE_RX00-
3_PE_TX00+
3_USB2+
3_SATA_TX+ 4)
3_SATA_RX- 4)
8
2_PE_RX00+
3_PE_TX00-
3_USB2-
3_SATA_TX- 4)
2_SATA_RX+
7
2_PE_RX00-
2_PE_TX00+
2_USB2+
2_SATA_TX+
2_SATA_RX-
6
1_PE_RX00+
2_PE_TX00-
2_USB2-
2_SATA_TX-
1_SATA_RX+
5
1_PE_RX00-
1_PE_TX00+
1_USB2+
1_SATA_TX+
1_SATA_RX-
4
V(I/O)
1_PE_TX00-
1_USB2-
1_SATA_TX-
reserved 2)
3
CLK4
GND
GNT3#
REQ4# 1)
GNT4#
2
CLK2
CLK3
SYSEN# 3)
GNT2#
REQ3# 1)
1
CLK1
GND
REQ1# 1)
GNT1#
REQ2# 1)
1)
2)
3)
4)
© EKF
PU 1k to V(I/O), alternate pull up values (e.g. 2.7k for V(I/O)=+3.3V) available on request
Not connected
PU 10k to +3.3V
SATA 3/4 on J2 not available concurrently to J-HSE, stuffing option on customer request
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User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Appendix
Mechanical Drawing
The following drawing shows the positions of mounting holes and expansion connectors on the
PC2-LIMBO.
100.0mm
0.0/0.0mm
3.57/94.5mm
21.5/
94.5mm
J-HSE
39.5/94.0mm
ekf.com
© EKF
48.5/5.5mm
PC2-LIMBO
14.3/78.0mm
28.3/5.9mm
J-EXP2
160.0mm
J-EXP
75.5/94.5mm
© EKF • ekf.com
PC2-LIMBO
PCB Dimensions
J-PCIE
100.3/93.5mm
J-LVDS
95.0/7.0mm
140.07/94.5mm
140.07/5.5mm
160.0/100.0mm
© EKF
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ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Sample Hybrid Backplane 3 + 2 Slots
Sample Hybrid Backplane 4 + 4 Slots
© EKF
-83-
ekf.com
User Guide • PC2-LIMBO • AtomTM E6xx CompactPCI® CPU Board
Industrial Computers Made in Germany
boards.
EKF Elektronik GmbH
Philipp-Reis-Str. 4 (Haus 1)
Lilienthalstr. 2 (Haus 2)
59065 HAMM
Germany
systems.
solutions.
Phone +49 (0)2381/6890-0
Fax +49 (0)2381/6890-90
Internet www.ekf.com
E-Mail sales@ekf.com