Q67101-H6864 datasheet(10/179 Pages) SIEMENS

Part #	Q67101-H6864

Description	Joint Audio Decoder-Encoder for Analog Videophone JADE AN

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Manufacturer	SIEMENS [Siemens Semiconductor Group]

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10 / 179 page

PSB 7230

Introduction

Semiconductor Group

10

Data Sheet 1998-07-01

1.5

Pin Description

Table 1

Parallel Host Interface

Pin No. Symbol Function Descriptions

16

AD0

I/O

Multiplexed Bus Mode: Address/Data Bus. Transfers

addresses from the host to JADE and data between the

host and the JADE

Demultiplexed Bus Mode: Data bus. Transfers data

between the host and the JADE

15

AD1

I/O

14

AD2

I/O

13

AD3

I/O

9

AD4

I/O

8

AD5

I/O

7

AD6

I/O

6

AD7

I/O

4

DS

I

Data Strobe.

The rising edge marks the end of a valid read or write

operation (Motorola bus mode).

RD

I

Read.

This signal indicates a read operation (Siemens/Intel

bus mode).

5

R/W

I

Read/Write.

A 1 (“high“) identifies a valid host access as a read

operation. A 0 identifies a valid host access as a write

operation (Motorola bus mode)

WR

I

Write.

This signal indicates a write operation (Siemens/Intel

bus mode).

3CS

I

Chip Select.

2

ALE

I

Address Latch Enable.

A “high” on this line indicates an address on AD(0:7)

(multipexed bus mode only). ALE also selects the

interface mode

82

A0

I

Address Bits A(0:3) (demultiplexed bus type)

83

A1

I

19

A2

I

96

A3

I

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