w66910 Winbond Electronics Corp America, w66910 Datasheet - Page 17

• Manufacturer Part Number: w66910
• Description: Te Mode Isdn S/t-controller With Microprocessor Interface
• Manufacturer: Winbond Electronics Corp America

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.
0
1
0
D L F L B
0
1
0
D L F L B
2 bits offset
1
B
1
B
1
TE
B
NT
1
B
1
B
1
F = Framing bit
L = DC balancing bit
D = D channel bit
E = D channel echo bit
F
B
1
A
B
1
B
1
= Auxiliary framing bit or Q-bit
B
1
NT
B
1
TE
B
1
B
1
E D A F
1
B
1
B
FIG.7.1 FRAME STRUCTURE AT S/T INTERFACE
1
L D L F
A
N B
2
A
B
L
2
B
2
B
2
B
B
2
B
2
B
2
B
2
B
48 bits in 250 s
2
B
2
B
2
E D M B
2
B
2
B
2
B
2
B
1
B
2
-17 -
1
B
L D L B
1
B
N = Bit set to a binary value N= NOT F
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
1
B
1
B
1
1
B
B
1
1
B
B
1
1
E D
B
1
B
1
B
1
W66910 PCI ISDN S/T-Controller
B
1
B
1
L D L B
S B
2
Publication Release Date:
B
2
B
2
B
2
B
2
B
2
2
B
B
2
B
2
B
2
B
2
2
B
B
2
2
B
E D L F L
2
B
A
2
L D L F L
Data Sheet
Revision 1.0
Feb,2001