10 of 53

January 19, 2006

IDT 79RC32435

Pin Characteristics

Pin Characteristics

Pin Characteristics

Pin Characteristics

Note: Some input pads of the RC32435 do not contain internal pull-ups or pull-downs. Unused inputs should be tied off to appropriate

levels. This is especially critical for unused control signal inputs (such as WAITACKN) which, if left floating, could adversely affect the

RC32435’s operation. Also, any input pin left floating can cause a slight increase in power consumption.

Function

Pin Name

Type

Buffer

I/O Type

Internal

Resistor

Memory and Peripheral

Bus

BDIRN

O

LVTTL

High Drive

BOEN

O

LVTTL

High Drive

WEN

O

LVTTL

High Drive

CSN[3:0]

O

LVTTL

High Drive

MADDR[21:0]

I/O

LVTTL

High Drive

MDATA[7:0]

I/O

LVTTL

High Drive

OEN

O

LVTTL

High Drive

RWN

O

LVTTL

High Drive

WAITACKN

I

LVTTL

STI

pull-up

DDR Bus

DDRADDR[13:0]

O

SSTL_2

DDRBA[1:0]

O

SSTL_2

DDRCASN

O

SSTL_2

DDRCKE

O

SSTL_2 / LVC-

MOS

DDRCKN

O

SSTL_2

DDRCKP

O

SSTL_2

DDRCSN

O

SSTL_2

DDRDATA[15:0]

I/O

SSTL_2

DDRDM[1:0]

O

SSTL_2

DDRDQS[1:0]

I/O

SSTL_2

DDRRASN

O

SSTL_2

DDRVREF

I

Analog

DDRWEN

O

SSTL_2

PCI Bus Interface

PCIAD[31:0]

I/O

PCI

PCICBEN[3:0]

I/O

PCI

PCICLK

I

PCI

PCIDEVSELN

I/O

PCI

pull-up on board

PCIFRAMEN

I/O

PCI

pull-up on board

PCIGNTN[3:0]

I/O

PCI

pull-up on board

PCIIRDYN

I/O

PCI

pull-up on board

PCILOCKN

I/O

PCI

PCIPAR

I/O

PCI

PCIPERRN

I/O

PCI

PCIREQN[3:0]

I/O

PCI

pull-up on board

PCIRSTN

I/O

PCI

pull-down on board

PCISERRN

I/O

PCI

Open Collector

pull-up on board

PCISTOPN

I/O

PCI

pull-up on board

PCITRDYN

I/O

PCI

pull-up on board

General Purpose I/O

GPIO[8:0]

I/O

LVTTL

High Drive

pull-up

GPIO[13:9]

I/O

PCI

pull-up on board

Table 2 Pin Characteristics (Part 1 of 2)