Table A-27 Server Monitor Module Connector Pinout - Silicon Graphics 1450 Maintenance Manual

A: Technical Reference
126
On the 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.
Note: The type of connector (in, out, in/out, power, ground) indicated in Table A-27 is
described from the perspective of the baseboard.
Table A-27 Server Monitor Module Connector Pinout
Pin Signal
1 SMI_L
2 I2C_SCL
3 CONP_L
4 Reserved
5 PWR_CNTL_L
6 I2C_SDA
7 5VSTNDBY
8 Reserved
9 NMI
10 HOST_AUX
11 RESET_L
12 GROUND
13 GROUND
14 Key
15 SECURE_MODE
16 GROUND
17 CHASSIS_INTRUSION Out
Type Description-Implementation
Out System management interrupt: not supported on SMM
In I2C 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
In/Out I2C 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
Out Non-maskable interrupt: not supported on SMM
Out Baseboard voltage monitored by SMM card: connected to
3.3 V
In Baseboard reset signal from SMM
Ground Ground
Ground Ground
No connect on baseboard
Out Secure mode indication: not supported on SMM
Ground Ground
Chassis intrusion indication: not supported on SMM
007-4276-001