w6692 Winbond Electronics Corp America, w6692 Datasheet - Page 19
w6692
Manufacturer Part Number
w6692
Description
Pci Bus Isdn S/t-controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W6692.pdf
(104 pages)
- Current page: 19 of 104
- Download datasheet (557Kb)
The peripheral control block is used to control other peripheral devices such as CODEC, SLIC, DTMF detector, LEDs.
7.2 Layer 1 Functions Descriptions
7.2.1 S/T Interface Transmitter/Receiver
interface. The binary "1" is represented by no line signal (zero volt), whereas a binary "0" is represented by a positive or negative
pulse.
which corresponds to a 192 kbit/s line rate. Each frame carries two octets of B1 channel, two octets of B2 channel and four D
channel bits. Therefore, the 2B+D data rate is 144 kbit/s. The frame structure is shown in Fig.7.1.
framing bit balancing bit is of the same polarity as the framing bit balancing bit, and subsequent binary zeros must alternate in
polarity.
According to ITU-T I.430, pseudo-ternary code with 100% pulse width is used in both directions of transmission on the S/T
Data transmissions on the S/T interface are arranged as frame structures. The frame is 250 s long and consists of 48 bits,
The layer 1 functions includes :
The frame begin is marked by a framing bit, which is followed by a DC balancing bit. The first binary "0" following the
- Transmitter/Receiver which conform to the electrical specifications of ITU-T I.430
- Receiver clock recovery and timing generation
- Output phase delay (deviation) compensation
- Layer 1 activation/deactivation procedures
- D channel access control
- Frame alignment
- Multi-frame synchronization
- Test functions
-19 -
W6692 PCI ISDN S/T-Controller
Publication Release Date:
Preliminary Data Sheet
Sep 30, 1999
Revision 0.9
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