102 SBC329 3U VPX Single Board Computer
Publication No. SBC329-HRM/1
6.42 Scratchpad Register (0x6C6)
This generic read/write register is available to software to validate FPGA access.
It returns 0xFF by default.
6.43 Test Register (0x6C7)
Bits
Description
Default
7 to 1
Reserved
0000000
b
0
CPU daisy-chain status:
1 = Chain fault
0 = Chain OK
N/A
6.44 XMC Status Register (0x6C8)
The SBC329 does not support PMC.
Bits
Description
Default
7
XMC1 presence:
1 = XMC1 is fitted
0 = XMC1 is not fitted
N/A
6
XMC1 VPWR voltage:
Only 5V VPWR is supported
0 = XMC1 VPWR rail is 5V
0
5
XMC1 BIST status:
1 = XMC1 BIST is active
0 = XMC1 BIST is not active
N/A
4 to 0
Reserved
00100
b
6.45 Backplane Status Register (0x6CA)
This register inverts the GA bits so that software can read a true slot number, e.g. the
SBC329 in slot 1 (only GA0 pulled low) results in bits 4 to 0 reading 00001
b
.
Bits
Description
Default
7
SYSCON status:
1 = SBC329 is fitted into a System Controller slot (SYSCON backplane pin is low)
0 = SBC329 is not fitted into a system controller slot (SYSCON backplane pin not pulled low)
N/A
6
NVMRO status:
1 = Backplane NVMRO signal is asserted
0 = Backplane NVMRO signal is negated
N/A
5
VPX GAP pin status:
1 = GAP pin is high
0 = GAP pin is low
N/A
4 to 0
VPX GA4 to GA0 status (inverted)
N/A