Evaluation Board Manual
Preliminary
PPC750FX Evaluation Board
750FXebm_ch8.fm
June 10, 2003
Displays
Page 47 of 115
8. Displays
There are nine LED displays on the board.
Table 8-1 identifies the location, color and function of each
display.
Figure 8-1 shows the location on the board.
Note: There are four Ethernet status LEDs integrated in the two-port Ethernet connector at J20. There are
two LEDs per port which are physically located at the corners of each of the two sockets. Each of the two
sockets is assigned to one of the Ethernet ports 1 or 2. The location designation L (left) and R (right) applies
when the connector is oriented horizontally and viewed looking into the sockets.
Table 8-1. Displays
Location
Name
Color
Description
DS1
DS2
LED0
LED1
Green
CPLD status
User programmable by setting bits in a CPLD register.
DS3
RED_LED
Red
Board problem.
1. SYSRESET_N signal is active
2. Fan failure (Not running or disconnected)
3. Jumper J16 installed.
DS4
LED2
Amber
CPLD status
User programmable by setting bits in a CPLD register.
DS5
ATX_OK_LED_N
Green
ATX power
Indicates power from external ATX supply connected at J34 is
good.
J20 2 L
Ethernet Link, Port 1
Green
Dual LEDs, part of the RJ45 Ethernet 1 port, indicating
Ethernet status.
J20 2 R
Ethernet Activity, Port 1
Yellow
J20 1 L
Ethernet Link, Port 2
Green
Dual LEDs, part of the RJ45 Ethernet 2 port, indicating
Ethernet status.
J20 1 R
Ethernet Activity, Port 2
Yellow
Figure 8-1. Display Location Diagram
1
2
L
L
R
R
J20
DS4
DS3
DS2
DS1
DS5
