ADLINK PXES-2590 - Manual (Page 45)

Monitoring/Control Functions 35
PXES-2590
Data format is as follows:
*Read 5V Voltage (command 0x04)
Reads 5V Voltage
Use the SMB 1 Send Byte and 2 Receive Byte to Read this
word data:
Receive Byte > 2 SA Slave address
< 3 0-255 Low byte data
Receive Byte > 4 SA Slave address
< 5 0-255 High byte data
Bit Description Default
0 Voltage Alarm. MCU writes 1 to indicate voltage thresholds
crossed. 0
1 Temperature Alarm. MCU writes 1 to indicate over
temperature occurred. 0
2 Fan Speed Alarm. MCU writes 1 to indicate fan speed
alarm is triggered. 0
3 3.3V Alarm. MCU writes 1 to indicate 3.3V out of specified
range. 0
4 5V Alarm. MCU writes 1 to indicate 5V out of specified
range. 0
5 -12V Alarm. MCU writes 1 to indicate -12V out of specified
range. 0
6 +12V Alarm. MCU writes 1 to indicate +12V out of
specified range. 0
7 5Vsb Alarm. MCU writes 1 to indicate 5V standby out of
specified range. 0
15..8 Reserved. 0
SMB Dir Offset Value Description
Send Byte > 0 SA Slave address
> 1 0x04 command code
Receive Byte > 2 SA Slave address
< 3 0-255 Low byte data
SMB Dir Offset Value Description