Board datasheet
RS-SAM3S-220X Datasheet
Redpine Signals, Inc.
2107 N. First Street, #680
San Jose, CA 95131.
Tel: (408) 748-3385
Fax: (408) 705-2019
Email: [email protected]
Website: www.redpinesignals.com
Redpine Signals, Inc
RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
Overview
Overview
The RS-SAM3S-220x is a IEEE
802.11bgn Wi-Fi add-on card that can
be interfaced with Atmel’s SAM3S-EK
Evaluation Kit. It integrates a MAC,
baseband processor, RF transceiver with
power amplifier, a frequency reference,
and an antenna in hardware; and all
WLAN protocol and configuration
functionality, networking stack in
embedded firmware to make a fully selfcontained 802.11n WLAN connectivity
solution for a variety of applications.
Device Features:
 Compliant to 802.11b/g and single
stream 802.11n
 Fully self-contained serial-towireless functionality
 Supports WPA2-PSK, WEP (64 and
128 bit) and TKIP security in
infrastructure mode
 Supports WEP (64 and 128 bit)
security in ad-hoc mode
 Terminates TCP and UDP
connections
 Configuration through SPI
 Integrated antenna, frequency
reference.
 Ultra-low-power operation with
power-save modes
 Ad-hoc and infrastructure modes for
maximum deployment flexibility
 Single supply – 3.1 to 3.6V
operation
RS-SAM3S-220X System Block Diagram
Host Processor
Atmel SAM3
Applications
SPI Host I/f
Interrupt
3.3V
Supply
Reset
Redpine Signals, Inc.
802.11 MAC
and BB
RF
Transceiver
RF
FE
TCP/UDP,
WLAN Stack
WLAN Subsystem
XO
RS-SAM3S-220X
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
Table of Contents
1 Detailed Feature List............................................................ 6
1.1
1.2
1.3
1.4
1.5
Host Interface ....................................................................
WLAN .................................................................................
Networking Protocols .........................................................
Configuration......................................................................
Software.............................................................................
6
6
6
6
7
2.1
Top View ............................................................................ 8
2 Package Description ............................................................ 8
3 SPI Interface Pin Description .............................................. 9
3.1
Pin Description ..................................................................10
4.1
4.2
4.3
Recommended Operating Conditions ..................................11
DC Characteristics – Digital I/O Signals .............................11
AC Characteristics – Digital I/O Signals..............................11
4 Electrical Characteristics ................................................... 11
4.3.1
SPI Interface................................................................................. 11
5 Performance Specifications ............................................... 13
5.1
5.2
Wireless Specifications ......................................................13
Receive Sensitivity .............................................................13
6 Software Architecture Overview ........................................ 14
6.1
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.1.9
Host ..................................................................................15
Host SPI Interface ......................................................................... 15
Host SPI Driver ............................................................................. 15
RS-SAM3S-220X SPI Interface ........................................................ 15
Host Abstraction Layer (HAL) .......................................................... 15
Wireless Control Block (WCB).......................................................... 15
Wi-Fi Control Frames ..................................................................... 15
TCP/IP Control Frames ................................................................... 15
Station Management Entity (SME) ................................................... 15
WPA Supplicant ............................................................................. 16
7 Creating Custom Hardware Designs................................... 17
8 Ordering Information ........................................................ 18
8.1
8.2
Contact Information ..........................................................18
Resources included with RS-SAM3S-220X...........................18
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
Table of Figures
Figure
Figure
Figure
Figure
1:Top View of the Module .................................................................. 8
2: Pinout of the SPI Connector .......................................................... 9
3:Interface Timings – SPI Interface ................................................ 12
4: Software Architecture Block Diagram .......................................... 14
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
List of Tables
Table
Table
Table
Table
Table
Table
1:
2:
3:
4:
5:
6:
Pin Description .............................................................................
Recommended Operating Conditions ............................................
Input/Output DC Characteristics ..................................................
AC Characteristics – SPI Interface ................................................
Wireless Specifications .................................................................
Receive Characteristics – Sensitivity ............................................
Redpine Signals, Inc.
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11
11
11
13
13
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
1 Detailed Feature List
1.1 Host Interface

Standard 4-wire SPI

Operation up to a maximum clock speed of 25MHz1
1.2 WLAN
MAC
 Conforms to IEEE 802.11b/g/n standards

Dynamic selection of fragment threshold, data rate, and antenna
depending on the channel statistics

Hardware accelerated implementation of WEP 64/128-bit and AES

Infrastructure and Ad-hoc modes

Security - WPA2-PSK, WEP, WPA-TKIP
Baseband Processing
 Supports DSSS (1, 2 Mbps) and CCK (5.5, 11 Mbps) modes

Supports all OFDM data rates (6, 9, 12, 18, 24, 36, 48, and 54 Mbps)

Supports IEEE 802.11n single-stream modes with data rates up to 65
Mbps

Supports long, short, and HT preamble modes

High-performance multipath compensation in OFDM, DSSS, and CCK
modes
RF

Highly integrated 2.4 GHz transceiver and Power Amplifier with direct
conversion architecture

Integrated frequency reference and antenna
1.3 Networking Protocols

TCP

UDP

ARP

ICMP

DHCP Client
1.4 Configuration
The RS-SAM3S-220X module can be configured by the Host using the SPI
interface. The following are some of the commands that can be given to the
1
This frequency depends on the external delays also.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
module. A detailed description is available in the software and documentation
package downloadable from www.redpinesignals.com/Atmel/rs-sam3s.html

Scan

Connect

Pre-shared Keys

SSID of hidden WLAN networks

DHCP Enable/Disable

Create/Join an IBSS (ad-hoc) network

Open/Close sockets for TCP, UDP
1.5 Software

Sample Host driver for SPI interface

Device configuration and management GUI for Windows XP

Embedded firmware for complete WLAN functionality including 802.11n
aggregation and Block-ACK, auto rate adaptation, security and also
complete network stack and applications including TCP, UDP, ARP, ICMP,
DHCP client.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
2 Package Description
2.1 Top View
SPI
Interface
Connector
Mother
PCB
Base Wi-Fi
device
Antenna
Figure 1:Top View of the Module
Note: The base Wi-Fi device is a Redpine Signals 802.11n module
(RS9110-N-11-22-01,
http://redpinesignals.com/Products/Modules/Connect-ion/Wireless_Device_Server/RS9110-N-11-22.html ) that is put on the
mother PCB above to create the Wi-Fi add-on card.
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
3 SPI Interface Pin Description
RS-SAM3S220X- Wi-Fi
add-on card
SAM3S-EK kit
1
2
9
10
Figure 2: Pinout of the SPI Connector
Note: For detailed description of the SAM3S-EK platform, please check
http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4678
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
3.1 Pin Description
Pin No.
Pin Name
Direction
Description
1
RESET_n
Input
Active Low reset input driving the reset
of the Wi-Fi module
2
POWER_EN
Input
Driven from the SAM3S-EK, enables
power to the Wi-Fi add-on card.
3
SPI_INTR
Output
Interrupt generated by the module
4
Reserved
Output
No connect
5
SPI_CS
Input
Active low SPI Slave select signal
6
SPI_MOSI
Input
SPI data input
7
SPI_MISO
Output
SPI data output
8
SPI_CLK
Input
SPI clock input
9
GND
Input
Should be connected to Ground
10
VCC
Input
Should be connected to 3.3V Supply
Table 1: Pin Description
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
4 Electrical Characteristics
4.1 Recommended Operating Conditions
Parameter
Symbol
Min.
Typ.
Max.
Units
Input Supply voltage
VIN
3.1
3.3
3.6
V
Ambient temperature
Ta
-40
25
85
C
Table 2: Recommended Operating Conditions
4.2 DC Characteristics – Digital I/O Signals
Parameter
Min.
Typ.
Max.
Units
Input high voltage
2
-
3.6
V
Input low voltage
-0.3
-
0.8
V
Output low voltage
-
-
0.4
V
Output high voltage
3.0
-
-
V
Input leakage current (at 3.3V or 0V)
-
-
10
A
Tristate output leakage current (at 3.3V
or 0V)
-
-
10
A
Table 3: Input/Output DC Characteristics
4.3 AC Characteristics – Digital I/O Signals
4.3.1 SPI Interface
Parameter
Symbol
Min.
SPI_CLK Frequency
Fspi
0
SPI_CS to output valid
Tcs
3.5
-
SPI CS setup time
Tcst
2
-
ns
SPI_MOSI setup time
Tsd
1
-
ns
SPI_MOSI hold time
Thd
1.5
-
ns
4
-
SPI_MISO clock to output valid Tod
Typ.
Max.
Units
25
MHz
7.5
ns
9.25
ns
Table 4: AC Characteristics – SPI Interface
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
SPI_CLK
SPI_CS
Tcst
Tsd
SPI_MOSI
Thd
Tod
SPI_MISO
SPI_CS
Tcs
SPI_MISO
Figure 3:Interface Timings – SPI Interface
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
5 Performance Specifications
5.1 Wireless Specifications
Feature
Description
Frequency Band
2.400 – 2.500 GHz (2.4 GHz ISM band)
Modulation
OFDM with BPSK, QPSK, 16-QAM, and 64-QAM
802.11b with CCK and DSSS
Supported Data Rates
802.11n: 6.5, 13, 19.5, 26, 39, 52, 58.5, 65 Mbps
802.11a/g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps
802.11b: 1, 2, 5.5, 11 Mbps
802.11n Features
MCS 0-7, STBC, RIFS, Greenfield Protection
A-MPDU, A-MSDU Aggregation with Block-ack
Typical Transmit Power
(+/- 2 dBm)
17 dBm for 802.11b DSSS
17 dBm for 802.11b CCK
15 dBm for 802.11g/n OFDM
Table 5: Wireless Specifications
5.2 Receive Sensitivity
Data Rate
Typical Sensitivity
(+/- 1.5 dBm)
Sweep – PER Floor
1 Mbps
-97.0 dBm
< 0.1%
2 Mbps
-93.0 dBm
< 0.1%
11 Mbps
-88.0 dBm
< 0.1%
6 Mbps
-91.0 dBm
< 0.1%
54 Mbps
-75.0 dBm
< 0.1%
65 Mbps
-71.0 dBm
< 0.1%
Table 6: Receive Characteristics – Sensitivity
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
6 Software Architecture Overview
The following figure depicts the software architecture of the RS-SAM3S-220X
module.
SAM 3S-EK
Application
Thin SPI Driver
SPI
Interrupt
SPI
Host Abstraction Layer
SLIP
Wireless Control Block
TCP/IP
Station Managment Entity
WPA/WPA-2
802.11 b/g/n MAC
RS-SAM 3S-220X
Figure 4: Software Architecture Block Diagram
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
The Host communicates with RS-SAM3S-220X using the SPI interface. A
driver on the Host takes care of the interaction with the Wi-Fi module through
the SPI Host interface.
The following sections explain in brief the various components.
6.1 Host
The Host is any system that has applications being executed on it.
6.1.1 Host SPI Interface
The SPI on the Host side provides an interface for the host to access the Wi-Fi
module. SPI on the Host acts as the master.
6.1.2 Host SPI Driver
The SPI driver on the Host is a thin driver through which the applications
interact with the Wi-Fi module. The SPI driver uses the SPI host controller
driver on the Host to send/receive the data to/from the RS-SAM3S-220X
module and also to configure the same over the SPI interface.
6.1.3 RS-SAM3S-220X SPI Interface
The SPI on the RS-SAM3S-220X acts the SPI slave. It is a standard 4-wire
SPI and can support a maximum frequency of 25MHz.
6.1.4 Host Abstraction Layer (HAL)
The HAL abstracts the lower layers in the host interface with which the RSSAM3S-220X module is connected. The HAL interacts with the Wireless
Control Block layer for the processing of the frames obtained from or destined
to the Host.
6.1.5 Wireless Control Block (WCB)
The data from/to the Host is classified as Wi-Fi specific frames and TCP/IP
specific frames. The WCB layer processes the frame obtained and acts
accordingly. The functionality of the WCB module depends on the type of the
frame and the direction of the frame (in case of TCP/IP) as described below.
6.1.6 Wi-Fi Control Frames
The WCB interprets the Wi-Fi control information from the Host and interacts
with the SME (Station Management Entity). Configuration of the RS-SAM3S220X module from the Host for Wi-Fi access is through SPI commands,
provided as an API set.
6.1.7 TCP/IP Control Frames
If the frames from the host are interpreted as TCP/IP specific frames then the
WCB interacts with the TCP/IP stack.
6.1.8 Station Management Entity (SME)
The SME is the core layer which manages the Wi-Fi connectivity. The SME
maintains the state machine to detect the activity on the Wi-Fi network and
indicates to the user accordingly. It also performs re-association to the
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
configured access point in Infrastructure mode. It interacts with the WPA
supplicant if Security is enabled in the Wi-Fi network.
6.1.9 WPA Supplicant
The WPA supplicant is used to initiate the 802.1x/E Access Point
authentication if WPA/WPA2-PSK is used as the security parameter. It also
plays a major part in performing the 4-way handshake to derive the PTK in
WPA/WPA2-PSK modes.
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
7 Creating Custom Hardware Designs
The base Wi-Fi device shown in the figure Top View of the Module is a
Redpine Signals 802.11n module (Part no. RS9110-N-11-22-01,
http://redpinesignals.com/Products/Modules/Connect-ion/Wireless_Device_Server/RS9110-N-11-22.html ). The Wi-Fi module is
put on the mother PCB above to create the Wi-Fi add-on card. This
module can be added as a Wi-Fi component in any other custom designs
using the RS9110-N-11-22-01 module and the Atmel SAM3 Host
processor. For guidance on integration of the module on an application
board, please visit
http://www.redpinesignals.com/Products/Modules/Connect-ion/index.html
Redpine Signals, Inc.
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RS-SAM3S-220X Datasheet
07 Sep, 2011. Version 1.0
8 Ordering Information
8.1 Contact Information
For additional information, please contact Sales at Redpine Signals, Inc.
Redpine Signals, Inc.
2107 North First Street, Suite 680,
San Jose, CA 95131 USA
Phone: +1 408 748 3385
E-mail: [email protected]
Website: http://www.redpinesignals.com/atmel
8.2 Resources included with RS-SAM3S-220X
The following documentation and software are available along with the RSSAM3S-220X, downloadable from www.redpinesignals.com/atmel ).
Documentation

Wi-Fi add-on card datasheet

Getting Started Guide

Programming Reference Manual

Application notes for example applications
Software

GUI for demonstration application

Binary image for demonstration application

API Source Code

Source code for example applications
Redpine Signals, Inc.
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