Motorola PPC/CPCI-690, Reference Manual

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Register Maps and Registers
6 - 10 PPC/CPCI-690
Register
The board provides a set of 8-bit wide board-specific registers. The registers
can be used by software to read board-specific status and configuration
data. Software can also write to some registers to generate a software reset
or to set the two user LEDs.
LED Control Register
The board provides two bicolored (red/green) LEDs and a hot-swap LED.
The bicolored LEDs can be configured as user LEDs or as hardware LED to
display active reset or Ethernet 1, 2 and 3 link activity.
Note: If the board is plugged into a PSB backplane without PCI bus,
opening the handle generates an EJECT_INT# interrupt which indicates
that the board is to be removed from the backplane. Therefore, bit 6 has
to be set to 1.
Table 31: LED Control Register
Base Address: F0000000
16
Offset: 00
16
Bit Signal Description Access
1..0 USER_LED1 Controls User LED 1
00: OFF
01: Green
10: Red
11: Reset LED (default) r/w
3..2 USER_LED2 Controls User LED 2
00: OFF
01: Green
10: Red
11: Ethernet LED (default) r/w
5..4 ETH_LEDx Controls Ethernet LED
00: Ethernet 1(default)
01: Ethernet 2
10: Ethernet 3
11: Reserved r/w
6 HS_LED Controls blue hot-swap LED.
0: OFF (default)
1: Blue r/w