Publication No. SBC330-0HH/3
Connectors and Cables 79
9.2.3 P0 signal definitions
Table 9-3 P0/J0 Signal Definitions
Signal
Direction
Description
SBC330 Usage/Comment
BP_CLK_N/P
I/O
VPX REF_CLK-
SBC330 accepts as input to FPGA
GA(0) -GA(4)
Input
Geographical Addressing bits
GA0 to GA4 are pulled up to P3V3_AUX on
SBC330 via a 10k resistor. Value is read into
FPGA
GAP~
Input
Geographical Addressing Parity bit.
The sum of all GA bits, including the parity
bit, should be odd
GAP~ is pulled up to P3V3_AUX on SBC330
via a 10k resistor. Value is read into FPGA
NC
Connector pin is not connected to any
signal
NOT USED
Backplane signal is not used by SBC330
P0_NVMRO
I/O
Non Volatile Memory Read Only
Used by SBC330 as an input. Also can be
driven by SBC330 by FPGA if the SBC330 is
configured to be VPX slot 1 system
controller
P0_SYSRESET~
I/O
VPX backplane System Reset
SBC330 holds in reset till this signal is
negated. Can drive it for minimum 20mS if
VPX slot 1 controller
P3V3_AUX
Input
VPX 3.3V_AUX Power Input
See
Section A.2.1
for more details
SM(0)
I/O
System Management bus 0 CLK
Connects to the on-board BIT
Management Microcontroller (BMM). Allows
access to certain on-board resources from
an external I
2
C master
SM(1)
I/O
System Management bus 0 DATA
TCK, TDI,
TMS,TRST~
Input
JTAG test signals
Buffered - used for test / Programming
TDO
Output
JTAG TDO
Fed from Quick Switch De-Multiplexer
VCC
Input
VPX VS3 (5V) Power input
See
Section A.2.1
for more details