W6691CD Просмотр технического описания (PDF) - Winbond

Номер в каталоге

Компоненты Описание

производитель

W6691CD

ISDN S/T Interface Transceiver

Winbond 

DCL

63

FSC

62

DD

61

DU

60

CP/BCL 1

FSCO

34

DCLO

33

C16.384 51

PFCK1 54

PFCK2 53

PBCK

55

PTXD

56

PRXD

57

SR1

42

SR2

43

SX1

45

Preliminary W6691

GCI Bus

I/O GCI Bus Data Clock : the frequency is twice data rate

TE mode : 1.536 MHz.

LT-T/LT-S mode : 4.096 MHz.

NT mode : 512KHz

It needs external pull-up.

I/O GCI Bus Frame Synchronization Clock: 8KHz. It needs external

pull-up.

I/O GCI Bus Data Downstream. It needs external pull-up.

I/O GCI Bus Data Upstream. It needs external pull-up.

O CP – output 512KHz in LT-T mode.

BCL – output 768KHz in TE mode.

O Output FSCO clock 8KHz for LT-T/LT-S mode(NT2 application). It

is synchronous to DCLO.

O Output DPLL clock 4.096MHz for LT-T/LT-S mode(NT2

application). It is synchronous to T interface clock.

I

16.384 MHz clock input for DPLL circuit to generate FSCO and

DCLO.

PCM Interface( It is only used in TE Mode)

O PCM port1 frame synchronization signal, with 8 KHz repetition rate

and 8 bits pulse width.

O PCM port2 frame synchronization signal, with 8 KHz repetition rate

and 8 bits pulse width.

O PCM bit synchronization clock of 1.536 MHz.

O PCM transmit bus data output. A maximum of two channels with

64 Kbits/s data rate can be multiplexed on this signal. It needs

external pull-up.

I

PCM bus receive data input. A maximum of two channels with 64

Kbits/s data rate can be multiplexed on this signal. It needs

external pull-up.

ISDN Signals and External Crystal

I

S/T bus receiver input (negative).

I

S/T bus receiver input (positive).

O S/T bus transmitter output (positive).

Publication Release Date: Sep 2001

14

Revision 1.1

Share Link: