GESBC-9G20i
User’s
Manual
Version 0.2
Page 4 of 21
20-Sep-13
Chapter 1 – Introducing the GESBC-9G20i Single Board
Computer
GESBC-9G20i Overview
The GESBC-9G20i is a low cost compact sized single board computer based on Atmel
AT91SAM9G20 processor. With a large peripheral set targeted to a variety of applications, the
GESBC-9G20i is well suited for industrial controls, digital media servers, audio jukeboxes, thin
clients, set-top boxes, point-of-sale terminals, biometric security systems, and GPS devices.
Advanced Features
The heart of the GESBC-9G20i is the AT91SAM9G20 which is the one in a series of ARM926EJ-
S-based processors. The AT91SAM9G20 microcontroller features DSP Instruction Extensions,
ARM Jazelle® Technology for Java® Acceleration. It has separate 32 Kbyte instruction and data
caches with write buffer. The ARM926EJ-S on the AT91SAM9G20 functions with a maximum
operating clock rate of 400MHz and a power usage between 20mW and 80mW (dependent upon
clock speed). The ARM core operates from a 1V supply while the I/O operates at 3.3V. The low
power consumption makes it an idea platform for battery operated applications.
The list below summarizes the features of the GESBC-9G20i.
•
400MHz Processor Core – ARM926EJ-S with MMU
•
32~ 64 MB SDRAM
•
128MB ~ 1GB NAND FLASH
•
1 10/100 Mbps Ethernet port
•
4 channel 10-bit Analog-to-Digital Converter (ADC
•
3 RS-232 Universal Asynchronous Receiver / Transmitters (UARTs)
•
1 RS-485 Port
•
2 USB Host Port
•
1 USB Device Port
•
Real-Time Clock with battery backup
•
Hardware Debug Interface
•
SD/MMC Socket
•
1 I2C Port
•
1 SPI Port
Figure 1 below shows a picture of the GESBC-9G20i Single Board Computer.
