W6691 Просмотр технического описания (PDF) - Winbond

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производитель

W6691

ISDN S/T Interface Transceiver

Winbond 

6. BLOCK DIAGRAM

The block diagram of W6691 is shown in Figure 6.1

Preliminary W6691

4-wire S/T

Line

Transceiver

&

AMI/BIN

Conversion

2B+D

2B+D

Slip

Buffer

GCI Bus

B-channel Switching

GCI Bus

GCI

Circuit

2B+D

Crystal/Oscillator

(7.68 MHz)

POTS

circuit

DPLL1 and Timing Generator

I/O Control

FSCO

DCLO

C16.384

D

HDLC

Controller

B1

HDLC

Controller

B2

HDLC

Controller

PCM

Port

FIFO

FIFO

FIFO

DPLL2

Microprocessor

Interface Circuit

PCM CODEC

Fig.6.1 W6691 Functional Block Diagram

Publication Release Date: Sep 2001

18

Revision 1.1

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