PEB20321 View Datasheet(PDF) - Siemens AG

Part Name

Description

Manufacturer

PEB20321

Multichannel Network Interface Controller for HDLC MUNICH32X

Siemens AG 

PEB 20321

Table 1

PCI Bus Interface Pins

Pin No. Pin No. Symbol I/O

P-MQFP- P-TQFP-

160-1

176-1

1, 28, 38, 3, 30, 40, AD(31:0) t/s

140…143, 154…158,

146…149, 160…163,

152, 153, 166, 167,

156…160, 170…174,

19…25, 21…27,

30…35, 39 32…37,

41

150, 2, 18, 164, 4, 20, C/BE(3:0) t/s

29

31

Introduction

Function

Address/Data Bus

A bus transaction consists of an address

phase followed by one or more data

phases.

When MUNICH32X is Master, AD(31:0) are

outputs in the address phase of a

transaction. During the data phases,

AD(31:0) remain outputs for write

transactions, and become inputs for read

transactions.

When MUNICH32X is Slave, AD(31:0) are

inputs in the address phase of a

transaction. During the data phases,

AD(31:0) remain inputs for write

transactions, and become outputs for read

transactions.

AD(31:0) are updated and sampled on the

rising edge of CLK.

Command/Byte Enable

During the address phase of a transaction,

C/BE(3:0) define the bus command. During

the data phase, C/BE(3:0) are used as Byte

Enables. The Byte Enables are valid for the

entire data phase and determine which

byte lanes carry meaningful data. C/BE0

applies to byte 0 (lsb) and C/BE3 applies to

byte 3 (msb).

When MUNICH32X is Master, C/BE(3:0)

are outputs. When MUNICH32X is Slave,

C/BE(3:0) are inputs.

C/BE(3:0) are updated and sampled on the

rising edge of CLK.

Semiconductor Group

15

1998-08-01

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