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Table 55.
Processor VRM Connectors (J2A2, J2B1, J2C1): Add-in VRM Connector
Pin Listing (continued)
Pin
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
*
Type (in/out) is from the perspective of the baseboard.
Termination Card
You must install a termination card in any vacant processor card slot to ensure reliable system
operation.
The termination card contains AGTL+ termination circuitry, clock signal termination, and Test
Access Port (TAP) bypassing for the vacant connector. The system does not boot unless all slots
are occupied with a processor or termination card.
Server Monitor Module Connector (J7H1)
The baseboard supports the Server Monitor Module feature connector. The table below shows the
pinout of the 26-pin baseboard connector.
On the SKA4 baseboard, pins 1, 9, 15, and 17 are connected to SMI_L, NMI, SECURE_MODE,
and CHASSIS_INTRUSION. Some server systems do not monitor these signals.
Table 56.
Server Monitor Module Connector Pin Out
Pin
Signal
1
SMI_L
2
I2C_SCL
3
CONP_L
4
Reserved
5
PWR_CNTL_L
6
I2C_SDA
7
5VSTNDBY
8
Reserved
Technical Reference
Signal
VSS6
VCCP7
VSS7
VCCP8
VSS8
VCCP9
VSS9
VCCP10
VSS10
VCCP11
VSS11
Type*
Description—SKA4 Implementation
out
System Management Interrupt: not supported on SMM
2
in
I
C clock line
out
Connector Present: tied to ground on the baseboard
Reserved pin: NC on baseboard
in
Power supply on/off control: allows SMM to control system power
2
in/out
I
C serial data line
out
+5 V standby: monitored by SMM to determine if AC power is
applied
Pulled up to 5 V through 10k on baseboard
Type*
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
POWER
continued
103
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