The PMC system monitor includes a combination I2C/PMBUS interface for software to access its control and status registers. The following table lists the I/O signals.
| Signal Name | MIO Pins | EMIO Signals | ||
|---|---|---|---|---|
| MIO-at-a-Glance Table | I/O | Signal Name | I/O | |
| SYSMON_I2C_SCL | SCL | I/O | SMON_I2CSCLO | I/O |
| Clock signal tristate control | – | – | SMON_I2CSCLTN | O |
| SYSMON_I2C_SDA | SDA | I/O | SMON_I2CSDAO | I/O |
| Data signal tristate control | – | – | SMON_I2CSDATN | O |
| SYSMON_SMBALERT (SYSMON alarm signal) |
SMB | I/O | SMON_SMBALERT | I/O |