MC68QH302 MC68QH302 Quad HDLC Integrated Multiprotocol Processor

MC68QH302  MC68QH302 Quad HDLC Integrated Multiprotocol Processor
Freescale Semiconductor, Inc.
MC68QH302/D
(Motorola Order Number)
11/97
REV 0
Advance Information
MC68QH302 Quad HDLC Integrated
Multiprotocol Processor
Technical Summary
The MC68QH302, quad HDLC integrated multiprotocol processor, is based on the threeSCC MC68302 family of chips with the addition of the QH protocol and two extra serial
DMA channels. The QH302 supports a total of four independent communications
channels, handling two HDLC or transparent channels on SCC1; see Figure 1 for a block
diagram.
In non-QH mode, the QH302 can be used in standard 302 applications as well.
To locate any published errata or updates for this document, refer to the website at
http://www.mot.com/netcomm.
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change or discontinue this product without notice.
© 1997. All rights reserved.
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MC68QH302 Technical Summary
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MC68QH302
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General-Purpose
DMA
Channel
Interrupt
Controllers
RAM
+
ROM
68000
System Bus
M68000
Core
20 Address Lines
8/16 Data Lines
8 DMA
Channels
1152 Bytes
Dual-Ported
RAM
Peripheral Bus
RISC
Controller
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3 Timers
4 Chip Selects
Parallel I/O
SCC1
(2 Channels)
SCC2
+
SCC3
SCP
+
2 SMCs
MC68QH302
Figure 1. MC68QH302 Block Diagram
The MC68QH302 supports a full ISDN basic rate interface with one serial channel left over to communicate
with the DTE as shown in Figure 2. The dual-channel SCC1 is used to support the two B channels.
Flash +
RAM +
EEPROM
MC68QH302
SCC1*
SCC3
IDL
or
GCI
2B + D
145572
U-INTF
or
145574
S/T INTF
X-FRMR
and
Line I/F
SCC2
MC145407
RS232-C
Note: *SCC1 = Dual channel SCC, each channel used for a B channel
Figure 2. MC68QH302 Supporting a Full ISDN Basic Rate Interface
MC68QH302 Technical Summary
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1.1 FEATURES
The main features of the MC68QH302 are as follows (new features indicated in bold):
•
MC68000/MC68008 microprocessor core (may be disabled to use the IMP as a peripheral)
•
Serial interface block including:
— Independent direct memory access (IDMA) controller
— Interrupt controller with two modes of operation
— Parallel I/O ports, some with interrupt capability
— On-chip 1152 bytes of dual-ported RAM
— Three timers, including a software watchdog timer
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— Four programmable chip-select lines with wait-state logic
— Programmable address mapping of dual-ported RAM and IMP registers
— On-chip clock generator with an output clock signal
— System control
– System control register
– Bus arbitration logic with low-interrupt latency support
– Hardware watchdog for monitoring bus activity
– Low power (standby) modes
– Disable CPU logic (M68000)
– Freeze control for debugging selected on-chip peripherals
– DRAM refresh controller
•
CP including:
— Main controller (RISC processor)
— Three physical full-duplex serial communication controllers (SCCs) with the following
protocols:
– HDLC/SDLC
– UART
– Totally transparent
– V.110
— SCC1 can support two logical HDLC or transparent channels running QH protocol
— Eight serial DMA channels dedicated to the four serial channels
— Capability to send /receive up to eight buffers/frames without M68000 core intervention
— Flexible physical interface accessible by SCCs for interchip digital link (IDL), general circuit
interface (GCI, also called IOM2), pulse code modulation (PCM), and nonmultiplexed serial
interface (NMSI) operation
— Serial communication port (SCP) for synchronous communication
— Serial management controllers (SMCs) for IDL and GCI channels
•
Application development system available with M68302FADS.
MC68QH302 Technical Summary
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1.2 MC68QH302 Ordering Information
Table 1 identifies operating frequencies available for the MC68QH302.
Table 1. MC68QH302 Package/Frequency Availability
Operating
Voltage
Package Type
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144-pin thin quad flat pack
(PV suffix)
5V
Frequency
(MHz)
16.67
Temperature
Order Number
0° C to 70° C
MC68QH302PV16
20
MC68QH302PV20
25
MC68QH302PV25
The documents listed in Table 2 contain detailed information on the MC68QH302. These documents can be
obtained from the Literature Distribution Centers at the addresses listed on the back page. Visit the website
at http://www.mot.com/netcomm/ for more information.
Table 2. Documentation
Document Title
Order Number
Contents
MC68302 User’s Manual
MC68302UM/AD
Detailed information for design
M68000 Family Programmer's Reference
Manual
M68000PM/AD
M68000 family instruction set
The 68K Source
BR729/D
Independent vendor listing supporting
software and development tools
The MC68QH302 Supplement to
MC68302 User’s Manual
MC68QH302SUPL/AD
Highlights implementation-specific
features of the MC68QH302, and
discusses how they differ from the
MC68302.
MC68QH302 Technical Summary
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MC68QH302 Technical Summary
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directly or indirectly, any claim of personal injury or death associated with such
unintended or unauthorized use, even if such claim alleges that Freescale
Semiconductor was negligent regarding the design or manufacture of the part.
Information in this document is provided solely to enable system and software
implementers to use Freescale Semiconductor products. There are no express or
implied copyright licenses granted hereunder to design or fabricate any integrated
circuits or integrated circuits based on the information in this document.
Freescale Semiconductor reserves the right to make changes without further notice to
any products herein. Freescale Semiconductor makes no warranty, representation or
guarantee regarding the suitability of its products for any particular purpose, nor does
Freescale Semiconductor assume any liability arising out of the application or use of
any product or circuit, and specifically disclaims any and all liability, including without
limitation consequential or incidental damages. “Typical” parameters which may be
provided in Freescale Semiconductor data sheets and/or specifications can and do
vary in different applications and actual performance may vary over time. All operating
parameters, including “Typicals” must be validated for each customer application by
customer’s technical experts. Freescale Semiconductor does not convey any license
under its patent rights nor the rights of others. Freescale Semiconductor products are
not designed, intended, or authorized for use as components in systems intended for
surgical implant into the body, or other applications intended to support or sustain life,
or for any other application in which the failure of the Freescale Semiconductor product
could create a situation where personal injury or death may occur. Should Buyer
purchase or use Freescale Semiconductor products for any such unintended or
unauthorized application, Buyer shall indemnify and hold Freescale Semiconductor
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all
claims, costs, damages, and expenses, and reasonable attorney fees arising out of,
directly or indirectly, any claim of personal injury or death associated with such
unintended or unauthorized use, even if such claim alleges that Freescale
Semiconductor was negligent regarding the design or manufacture of the part.
MC68QH302/D
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Click to View Pricing, Inventory, Delivery & Lifecycle Information:
NXP:
MC68LC302PU20CT MC68LC302PU25CT MC68LC302AF20CT MC68LC302AF25CT KM68LC302AF20VCT
M68LC302CAF16VCT M68LC302CAF20VCT MC68302AG16C MC68302AG16VC MC68302AG20C
MC68302AG20CB1 MC68302AG25C MC68302AG33C MC68302CAG16VC MC68302CAG16VCR2
MC68302CEH16C MC68302CEH20C MC68302CRC16C MC68302CRC20C MC68302EH16C MC68302EH16CB1
MC68302EH16CR2 MC68302EH20CB1 MC68302EH20CR2 MC68302EH25C MC68302EH25CB1
MC68302EH25CR2 MC68302RC16C MC68302RC20C MC68302RC25C MC68EN302AG20BT
MC68EN302AG25BT MC68EN302CAG20BT MC68LC302AF16CT MC68LC302AF16VCT MC68LC302AF20VCT
MC68LC302CAF16CT MC68LC302CAF20CT MC68302EH20C KMC68LC302AF20CT KMC68302EH25C
KMC68302AG16VC KMC68302AG16C KMC68302AG25C KM68LC302CAF16CT KMC68EN302AG25BT
KMC68LC302AF16CT KMC68302AG20C KMC68LC302AF25CT
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