W6691CD WINBOND [Winbond], W6691CD Datasheet - Page 18
W6691CD
Manufacturer Part Number
W6691CD
Description
ISDN S/T Interface Transceiver
Manufacturer
WINBOND [Winbond]
Datasheet
1.W6691CD.pdf
(106 pages)
- Current page: 18 of 106
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6. BLOCK DIAGRAM
The block diagram of W6691 is shown in Figure 6.1
Crystal/Oscillator
(7.68 MHz)
4-wire S/T
GCI Bus
POTS
circuit
FSCO
DCLO
C16.384
Transceiver
Conversion
DPLL1 and Timing Generator
AMI/BIN
Circuit
GCI
Line
&
I/O Control
Fig.6.1 W6691 Functional Block Diagram
2B+D
2B+D
Slip
Buffer
2B+D
18
DPLL2
Controller
HDLC
FIFO
D
GCI Bus
Controller
HDLC
Microprocessor
Interface Circuit
FIFO
B1
Preliminary W6691
B-channel Switching
Publication Release Date: Sep 2001
Controller
HDLC
FIFO
B2
PCM
Port
Revision 1.1
PCM CODEC
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