IDT 89HPES32NT24AG2 Datasheet
8 of 38 December 17, 2013
Signal Type Name/Description
MSMBCLK I/O Master SMBus Clock. This bidirectional signal is used to synchronize transfers on the
master SMBus. It is active and generating the clock only when the EEPROM or I/O
Expanders are being accessed.
MSMBDAT I/O Master SMBus Data. This bidirectional signal is used for data on the master SMBus.
SSMBADDR[2,1] I Slave SMBus Address. These pins determine the SMBus address to which the slave
SMBus interface responds.
SSMBCLK I/O Slave SMBus Clock. This bidirectional signal is used to synchronize transfers on the
slave SMBus.
SSMBDAT I/O Slave SMBus Data. This bidirectional signal is used for data on the slave SMBus.
Table 4 SMBus Interface Pins
Signal Type Name/Description
GPIO[0] I/O General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
1st Alternate function pin name: PART0PERSTN
1st Alternate function pin type: Input/Output
1st Alternate function: Assertion of this signal initiated a partition funda-
mental reset in the corresponding partition.
2nd Alternate function pin name: P16LINKUPN
2nd Alternate function pin type: Output
2nd Alternate function: Port 16 Link Up Status output.
GPIO[1] I/O General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
1st Alternate function pin name: PART1PERSTN
1st Alternate function pin type: Input/Output
1st Alternate function: Assertion of this signal initiated a partition funda-
mental reset in the corresponding partition.
2nd Alternate function pin name: P16ACTIVEN
2nd Alternate function pin type: Output
2nd Alternate function: Port 16 Link Active Status Output.
GPIO[2] I/O General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
1st Alternate function pin name: PART2PERSTN
1st Alternate function pin type: Input/Output
1st Alternate function: Assertion of this signal initiated a partition funda-
mental reset in the corresponding partition.
2nd Alternate function pin name: P4LINKUPN
2nd Alternate function pin type: Output
2nd Alternate function: Port 4 Link Up Status output.
GPIO[3] I/O General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
1st Alternate function pin name: PART3PERSTN
1st Alternate function pin type: Input/Output
1st Alternate function: Assertion of this signal initiated a partition funda-
mental reset in the corresponding partition.
2nd Alternate function pin name: P4ACTIVEN
2nd Alternate function pin type: Output
2nd Alternate function: Port 4 Link Active Status Output.
Table 5 General Purpose I/O Pins (Part 1 of 2)