5812-DS00-R datasheet(61/84 Pages) BOARDCOM

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BCM5812

Advance Data Sheet

3/11/03

B roa dcom Co rpo rat ion

Page 53

Signal Definitions

Document

5812-DS01-405-R

SIGNAL DEFINITIONS

Table 17: Signal Definitions

Signal Name

I/O

Description

AD[31:0]

PCI multiplexed Address/Data bus.

PCI_CLK

PCI Clock, 33 MHz.

GNT

PCI Bus Grant allowing BCM5812 to use the bus.

FRAME

PCI Frame, indicates the beginning and duration of a master transfer.

IRDY

PCI Initiator ready.

TRDY

PCI Target ready.

DEVSEL

PCI Device Select, asserted by an access target.

STOP

PCI Stop, requesting that the current master stop an active transfer.

PERR

PCI Parity Error.

SERR

PCI System Error, open drain.

PAR

PCI Parity.

REQ

PCI Bus Request.

RST

PCI Reset, tri-states all PCI outputs.

INTA

PCI interrupt output, open drain.

C/BE[3:0]

PCI Command/Byte Enable, provides PCI bus command and data byte enables.

IDSEL

PCI Initialization Device Request, used for PCI configuration cycles.

LOCK

PCI lock for atomic operation, must be pulled up to VDDO.

VDDC

–

Core power pins, must be connected to a 1.8V(core) source.

VDDO

–

Peripheral power pins, must be connected to a 3.3V(I/O) source.

GND

–

Core and Peripheral ground pins.

AVCC1

–

Analog VCC for PLL1, must be connected to a quiet 1.8V source.

AGND1

–

Analog GND for PLL1.

AVCC2

–

Analog VCC for PLL2, must be connected to a quiet 1.8V source.

AGND2

–

Analog GND for PLL2.

VIO

–

PCI clamp voltage bias. Connect to 3.3V for 3.3V signaling environments.Connect to

5V for 5V signaling environments.

SGND

–

Clamp ground (substrate ground).

EXPORT

EXPORT pin (high = 56-bit DES encryption; disable ARCFOUR; disable AES; low =

3DES strong encryption; enable ARCFOUR; enable AES).

TEST

Test pin, must be grounded for regular operation. When TEST is high, all outputs are

tri-stated. It is internally pulled down.

TRST

Must be connected to ground for normal operation. Used for boundary scan JTAG

testing. It is internally pulled down.

TMS

Test mode select for JTAG boundary scan. Must be connected to VDDO for normal

operation. It is internally pulled up.

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