w6691 Winbond Electronics Corp America, w6691 Datasheet - Page 71
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w6691
Manufacturer Part Number
w6691
Description
Isdn S/t Interface Transceiver
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W6691.pdf
(106 pages)
- Current page: 71 of 106
- Download datasheet (602Kb)
8.8.3 Command/Indication Transmit Register CIX Read/Write Address 1BH
Value after reset: 0FH
BAC Bus Access Control
It is available if TIC bus function is active. If this bit is set to “1”, W6691 will try to access the TIC-bus to occupy
the C/I channel even if no D channel frame has to be transmitted. It should be reset when the access has been
completed to grant a similar access to the other devices transmitting in that GCI channel.
CODX3-0 Layer 1 Command Code
Value of the command code is transmitted to layer 1. If TE mode is selected, CODX3-0 bits are CI0 bit in GCI
bus channel.
Reading this register returns the previous written value.
8.8.4 S/Q Channel Receive Register
Value after reset: XXH
MSYN
When this bit is "1", a multiframe synchronization is achived, i.e the S/T receiver has synchronized to the
received F
S1-4
These are the S bits received in NT to TE direction in frames 1, 6, 11 and 16. S1 is in frame 1, S2 is in frame 6
etc. These four bits are double buffered.
7
0
7
0
Received S Bits
A
Multiframe Synchronization
and M bit patterns.
6
0
6
0
MSYN
5
0
5
BAC
4
4
0
CODX3
S1
3
3
SQR
CODX2
71
S2
2
2
Read Address 1CH
CODX1
S3
1
1
CODX0
S4
Preliminary W6691
0
0
Publication Release Date: Sep 2001
Revision 1.1
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