89H32H8G2ZCBL datasheet(6/41 Pages) RENESAS

Part #	89H32H8G2ZCBL

Description	32-Lane 8-Port PCIe® Gen2 System Interconnect Switch

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Manufacturer	RENESAS [Renesas Technology Corp]

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November 28, 2011

IDT 89HPES32H8G2 Data Sheet

Signal

Type

Name/Description

GCLKN[1:0]

GCLKP[1:0]

I

Global Reference Clock. Differential reference clock input pair. This clock

is used as the reference clock by on-chip PLLs to generate the clocks

required for the system logic. The frequency of the differential reference

clock is determined by the GCLKFSEL signal.

P[2:0]CLKN

P[2:0]CLKP

I

Port Reference Clock. Differential reference clock pair associated with

ports 0, 1, and 2.1

1. Unused port clock pins should be connected to Vss on the board.

Table 2 Reference Clock Pins

Signal

Type

Name/Description

MSMBCLK

I/O

Master SMBus Clock. This bidirectional signal is used to synchronize

transfers on the master SMBus.

MSMBDAT

I/O

Master SMBus Data. This bidirectional signal is used for data on the mas-

ter 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 trans-

fers on the slave SMBus.

SSMBDAT

I/O

Slave SMBus Data. This bidirectional signal is used for data on the slave

SMBus.

Table 3 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.

Alternate function pin name: PART0PERSTN

Alternate function pin type: Input/Output

Alternate function: Assertion of this signal initiated a partition fundamental

reset in the corresponding partition.

GPIO[1]

I/O

General Purpose I/O.

This pin can be configured as a general purpose I/O pin.

Alternate function pin name: PART1PERSTN

Alternate function pin type: Input/Output

Alternate function: Assertion of this signal initiated a partition fundamental

reset in the corresponding partition.

GPIO[2]

I/O

General Purpose I/O.

This pin can be configured as a general purpose I/O pin.

Alternate function pin name: PART2PERSTN

Alternate function pin type: Input/Output

Alternate function: Assertion of this signal initiated a partition fundamental

reset in the corresponding partition.

Table 4 General Purpose I/O Pins (Part 1 of 2)

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