ADLINK CoreExpress-ECO2 - Manual (Page 14)

4.4 Get SMC Capability
This command reports the Capability of the SMC. Several features are controlled by the SMC on
different hardware platforms. The Capability bytes gives the User the information about the
implemented features (explained in Table 4.4.2).
START SMC_addr ACK command ACK START (Repeat) SMC_addr ACK length
ACK Byte 1 (MSB) ACK Byte 2 (LSB) ACK STOP
Table 4.4.1 SMC transmitter format of the Get SMC Capability Command Code
ITEM DESCRIPTION
START SM-bus start condition
SMC_addr 0x50 (8-bit)
ACK SM-bus acknowledge condition generated by receiver
command 0x2F = “Get SMC Capability” Command code
length 0x02 = 2 Bytes data length
Byte 1,2
Data-Bytes containing the Capability Bits
Bit 11-15: set to 0
for future functionality
Bit 10: Power Monitor (current sense)
0 = not provided, 1 = featured
Bit 9: Watchdog Type II (initial timeout of Watchdog)
0 = not provided, 1 = featured
Bit 8: Backlight control
0 = not provided, 1 = featured
Bit 7: Bootloader timeout programable
0 = not provided, 1 = featured
Bit 6: Storage of failure reason
0 = not provided, 1 = featured
Bit 5: Voltage Monitor
0 = not provided, 1 = featured
Bit 4: Temperatures
0 = not provided, 1 = featured
Bit 3: Watchdog
0 = not provided, 1 = featured
Bit 2: USER FLASH Size:
0 = 512 Bytes, 1 = 1024 Bytes
Bit 1: System Restart Event
0 = not provided, 1 = featured
Bit 0: Uptime & Power Cycles Counter
0 = not provided, 1 = featured
STOP SM-bus stop condition
Table 4.4.2 Explanation of Table 4.4.1