w6692 Winbond Electronics Corp America, w6692 Datasheet - Page 38

• Manufacturer Part Number: w6692
• Description: Pci Bus Isdn S/t-controller
• Manufacturer: Winbond Electronics Corp America

7.3 Serial Interface Bus
signals. The multiplexing/demultiplexing functions are carried out in the Serial Interface Bus (SIB) block. In addition, the B1
and B2 channels can be individually set to carry 64 kbps or 56 kbps traffic.
7.4 B Channel Switching
channel HDLC controller , PCM port 1 or PCM port 2. In addition, the PCM ports can be programmed to connect to the B
channel HDLC controller for voice recording/ retrieving from main memory in answering machine applications. In this case,
only extended transparent mode can be used.
follows :
can receive data from PCM port simultaneously. Here are the setting values of possible switching combinations shown as below.
The switching matrix is controlled by PXC bit in PCTL register and BSW1-0 bits in B1_MODE and B2_MODE registers as
Each B channel in S/T bus or U transceiver can be individually programmed to connect to one of the three data ports : B
A special mode is provided (BSW1-0 = 11B) in which case the PCM port can receive data from layer 1 and the HDLC receiver
The 192 kbps S/T interface signal consists of two B channels (64 kbps each), one D channel (16 kbps) and other control
Layer 1
/GCI
Layer 1
/GCI
BSW1-0 bits
PXC
00
00
0
0
0
0
1
1
1
1
B1
B2
01
01
10
HDLC/
Layer 2
HDLC/Layer 2
10
B1_SW[1:0]
00
01
10
11
xx
xx
xx
xx
PCM1 Receive Table
1
-38 -
B2_SW[1:0]
1
PXC bit
0
xx
xx
xx
xx
00
01
10
11
0
PCM1 Rx
L1_B1
L1_B1
L2_B1
L1_B2
L1_B2
L2_B2
PCM1
PCM2
W6692 PCI ISDN S/T-Controller
Publication Release Date:
PCM2
TX/RX
PCM
TX/RX
Preliminary Data Sheet
Sep 30, 1999
Revision 0.9