W66910CD Просмотр технического описания (PDF) - Winbond

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W66910CD

TE Mode ISDN S/T-Controller with Microprocessor Interface

Winbond 

Data Sheet

W66910 PCI ISDN S/T-Controller

48 bits in 250 µs

NT → TE

D LFL B1B1B1B1B1B1B1B1 E D A FA N B2B2B2B2B2B2B2B2E D M B1 B1B1B1B1B1 B1B1 E D

0

1

0

2 bits offset

S B2B2B2B2 B2B2B2B2 E D LFL

TE → NT

D LF L B1B1B1B1B1B1B1B1 L D L FA L

0

1

0

B2B2B2B2B2B2B2B2 L D L B1B1 B1B1B1B1B1B1L D L B2B2B2 B2B2 B2B2B2 L D LFL

F = Framing bit

L = DC balancing bit

D = D channel bit

E = D channel echo bit

FA = Auxiliary framing bit or Q-bit

N = Bit set to a binary value N= NOT FA

B1 = Bit within B channel 1

B2 = Bit within B channel 2

A = Bit used for activation

S = Bit used for S channel

M = Multiframe bit

FIG.7.1 FRAME STRUCTURE AT S/T INTERFACE

There are three wiring configurations according to I.430 : point-to-point, short passive bus and extended passive bus. They are

shown in Fig.7.2.

-17 -

Publication Release Date: Feb,2001

Revision 1.0

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