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007-4276-001
A: Technical Reference
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
Type
Description-Implementation
1
SMI_L
Out
System management interrupt: not supported on SMM
2
I2C_SCL
In
I2C clock line
3
CONP_L
Out
Connector present: tied to ground on the baseboard
4
Reserved
Reserved pin: NC on baseboard
5
PWR_CNTL_L
In
Power supply on/off control: allows SMM to control
system power
6
I2C_SDA
In/Out I2C serial data line
7
5VSTNDBY
Out
+5 V standby: monitored by SMM to determine if AC
power is applied
8
Reserved
Pulled up to 5 V through 10k on baseboard
9
NMI
Out
Non-maskable interrupt: not supported on SMM
10
HOST_AUX
Out
Baseboard voltage monitored by SMM card: connected to
3.3 V
11
RESET_L
In
Baseboard reset signal from SMM
12
GROUND
Ground Ground
13
GROUND
Ground Ground
14
Key
No connect on baseboard
15
SECURE_MODE
Out
Secure mode indication: not supported on SMM
16
GROUND
Ground Ground
17
CHASSIS_INTRUSION Out
Chassis intrusion indication: not supported on SMM
Summary of Contents for 1450
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