The SYSMON provides two different external command interfaces. Although I2C and
PMBus modes leverage similar I2C transport structures, PMBus mode leverages the standard
PMBus command interface. The SYSMON I2C and PMBus address and MIO/EMIO pin locations are
configurable through the Control, Interface, and Processing IP and allows access to the
SYSMON.
Important: I2C/PMBUS
restrictions for designs that use 2.5V or 3.3V on banks 500 and 501 exist for all
package and speed grade combinations of VC1902, VC1802, VM1802, VM1302, VM1402. See
Versal AI Core Series Production Errata (EN313) and
Versal Prime Series Production Errata (EN314) for more details.
Several Slave
Addresses are reserved by both I2C and SMBUS standards and should not be configured for
I2C or PMBUS control interface. These addresses are defined in the following table. The
SYSMON I2C/PMBus interfaces are not available before the SYSMON is configured. The
SYSMON address can only be configured in the Control, Interface, and Processing IP.Important: Neither I2C
nor PMBus interfaces are active before the SYSMON is configured to enable the
interface.
| Reserved Address | Standard | |
|---|---|---|
| 000 0XXX |
0x00 - 0x07
|
I2C and SM Bus |
| 000 1000 |
0x08
|
SM Bus |
| 000 1001 |
0x09
|
SM Bus |
| 000 1011 |
0x0B
|
SM Bus |
| 000 1100 |
0x0C
|
SM Bus |
| 010 1000 |
0x28
|
SM Bus |
| 010 1100 |
0x2C
|
SM Bus |
| 011 0111 |
0x37
|
SM Bus |
| 100 00XX |
0x40 - 0x43
|
SM Bus |
| 100 0100 |
0x44
|
SM Bus |
| 110 0001 |
0x61
|
SM Bus |
| 111 1XXX |
0x78 - 0x7F
|
I2C and SMBUS |