W6692 Datasheet, PDF (20/104 Pages) Winbond – PCI Bus ISDN S/T-Controller

Preliminary Data Sheet
W6692 PCI ISDN S/T-Controller
48 bits in 250 µs
NT → TE
D L F L B1B1B1B1B1B1B1B1 E D A FAN B2B2B2B2B2B2B2B2 E D MB1B1B1B1B1B1B1B1 E D
0 ^LFL
1
0
2 bits offset
S B2B2B2B2B2B2B2B2 E D
TE → NT
D L F L B1B1B1B1B1B1B1B1 L D L FA L
B2B2B2B2B2B2B2B2 L D L B1B1B1B1B1B1B1B1 L D
L
0 ^{B2B2B2B2B2B2B2B2 L D L F L}
1
0
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=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 pass bus. They are
shown in Fig.7.2.
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Publication Release Date: Sep 30, 1999
Revision 0.9