GESBC-9G20i
User’s
Manual
Version 0.2
Page 10 of 21
20-Sep-13
Chapter 3 – GESBC-9G20i Function Blocks
AT91SAM9G20
The GESBC-9G20i Single Board Computer uses the Atmel AT91SAM9G20 as the core processor
on this development board. The top-level features of AT91SAM9G20 processor are the following:
•
ARM926EJ-S RISC Core Processor
•
400 MHz / 400 MIPS Performance
•
32Kbyte Instruction Cache
•
32Kbyte Data Cache
•
Linux and Windows CE enabled MMU
•
133 MHz System Bus
•
32 bit SDRAM Interface
•
Serial EEPROM Interface
•
10 / 100 Mbps Ethernet MAC
•
6 UART
•
Two-port USB Host
•
4 channel 10 bit ADC
•
2 SPI Port
•
Serial Audio Interface
•
JTAG Interface
More detailed information regarding the AT91SAM9G20 processor can be found at
www.atmel.com
.
SDRAM
The AT91SAM9G20 features a unified memory address model where all memory devices are
accessed over a common address and data bus. The GESBC-9G20i supports 32MB SDRAM.
FLASH
The GESBC-9G20i is shipped with 128Mbytes of NAND FLASH memory.
RS-232 Port 0, 1, and 2
The GESBC-9G20i Single Board Computer is shipped with two 3-wire RS-232 UART interface,
and one 9 wire RS-232 UART interface.
