W6691CD WINBOND [Winbond], W6691CD Datasheet - Page 99

Manufacturer Part Number

W6691CD

Description

ISDN S/T Interface Transceiver

Manufacturer

WINBOND [Winbond]

Datasheet

1.W6691CD.pdf (106 pages)

External ocsillator input (XTAL1) clock characteristics

9.4 Preliminary Switching Characteristics

9.4.1 PCM Interface Timing

Note 1: These drawings are not to scale.

2: The frequency of PBCK is 1536 kHz which includes 24 channels of 64 kbps data. The PFCK1 and PFCK2 are located at channel 1

and channel 2, each with a 8 x PBCK duration.

Parameter

Duty cycle

(1.536MHz)

PBCK

PFCK1

PFCK2

PTXD

PRXD

Min.

1:2

Port1

CH 1

CH 2

Port2

Max.

2:1

24 CHs

Preliminary W6691

Publication Release Date: Sep 2001

Port1

Port2

Revision 1.1