W66910 Datasheet, PDF (17/81 Pages) Winbond – TE Mode ISDN S/T-Controller with Microprocessor Interface

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
F_A = Auxiliary framing bit or Q-bit
N = Bit set to a binary value N= NOT F_A
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.
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Publication Release Date: Feb,2001
Revision 1.0