Figure 2. edb9315a top view – Cirrus Logic EDB9315A User Manual

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EDB9315A

Technical Reference Manual

DS638DB3

Figure 2. EDB9315A Top View

A. EP9315 processor
B. Processor Status LEDs - one Red and one

Green

C. USB 2.0 High-speed Device IC (ISP1581)
D. SDRAM - 2 16-bit devices
E. Memory Bus Expansion Connector
F. Main Power Switch, S1
G. 12V Power Connector
H. 3.3V Voltage Regulator - switching, 3A
I. Serial Boot Pushbutton - labeled "SERIAL

BOOT"

J. Reset Pushbutton - labeled "/POR"
K. UART2 Header - 5x2
L. UART1 Header - 5x2
M. UART0, DB9 Male

N. USB Device Connector
O. Ethernet Connector
P. Dual, Stacked USB Host Connector
Q. Audio Out Connector
R. Audio In Connector
S. Peripheral Bus Expansion Connector
T. Touch Screen Connector
U. JTAG Connector
V. VGA Connector - DB15, female
W. LCD Connector
X. IDE Connector
Y. Commercial IR
Z. IDE Power Connector, +12V, +5V, GND
AA. RTC and Battery Backup

One item not listed above is the Flash device. It is located on the bottom side of the board, under item C.
There are no jumpers on the board. The only "jumper" is the serial boot pushbutton. This button is used
when the developer wants to use the Cirrus Logic download utility to put new code into Flash memory.