ADLINK CoreExpress-ECO2 - Manual (Page 20)

4.11 Read current CPU Temperature
This command reads the current CPU Temperature. The CPU temperature is transmitted in two
Bytes. The first byte is the full degree value, the second byte the value after the comma (Table
4.11.1). Both values are signed chars.
START SMC_addr ACK command ACK START (Repeat) SMC_addr+1 ACK
length ACK(C) Byte 1 (MSB) ACK(C) Byte 2 (LSB) ACK(C) STOP
Table 4.11.1 SMC transmitter format of the CPU Temperature Command Code
ITEM DESCRIPTION
START SM-bus start condition
SMC_addr 0x50 (8-bit)
ACK SM-bus acknowledge condition generated by receiver
command 0x37 = “Read current CPU Temperature” Command code
Length 0x02 = 2 Bytes data length
Byte 1 Full degree value of CPU temperature. The format of this byte is signed char.
Byte 2 Value after comma of CPU temperature
STOP SM-bus stop condition
Table 4.11.2 Explanation of Table 4.11.1
4.12 Read current Board Temperature
This command reads the current Board Temperature. The Board temperature is transmitted in a
signed char Byte.
START SMC_addr ACK command ACK START (Repeat) SMC_addr+1 ACK
length ACK(C) data ACK(C) STOP
Table 4.12.1 SMC transmitter format of the Read current Board Temperature Command Code
ITEM DESCRIPTION
START SM-bus start condition
SMC_addr 0x50 (8-bit)
ACK SM-bus acknowledge condition generated by receiver
command 0x38 = “Read current Board Temperature” Command code
length 0x01 = 1 Bytes data length
Data Board temperature. The format of this byte is signed char.
STOP SM-bus stop condition
Table 4.12.2 Explanation of Table 4.12.1