Publication No. SBC329-HRM/1
FPGA Registers 83
6.5 Board ID String Registers (0x610 to 0x61A)
These read back ASCII values for “
SBC329
”, as follows:
Register
Value ASCII Default
610
0x53
S
0x53
611
0x42
B
0x42
612
0x43
C
0x43
613
0x33
3
0x33
614
0x32
2
0x32
615
0x39
9
0x39
616 to 61A
0x00
-
0x00
NOTE
Code should be written to read bytes until the first NULL is encountered
or
the last byte is
reached (0x61A).
6.6 LED Control Register (0x622)
Bits
Read/Write Description
Default
7
Read/Write
BIT Pass LED (DS404):
1 = LED lit
0 = LED not lit
0
(sticky on BIT reset)
6
Read only
a
BIT Fail LED (DS401)
0
5
Read/Write
BIT Status 1 LED (DS402):
1 = LED lit
0 = LED not lit
0
(sticky on BIT reset)
4
Read/Write
BIT Status 2 LED (DS403):
1 = LED lit
0 = LED not lit
0
(sticky on BIT reset)
3 to 0
Read only
Reserved
0000
b
a. It is not possible to control the BIT Fail LED directly; control is only possible via the BMM.
6.7 BIOS/SPI Control Register (0x625)
Bits
Read/Write Description
Default
7
Read/Write
Select the other boot device:
1 = Select the opposite boot device to that from which the board was booted
(i.e. if the board was booted from the recovery device, select the main device, and vice versa)
0 = Select the boot device from which the board was booted
0
6 to 0
Read only
Reserved
0000000
b