參數(shù)資料
型號: W6692ACF
廠商: WINBOND ELECTRONICS CORP
元件分類: 數(shù)字傳輸電路
英文描述: DATACOM, ISDN CONTROLLER, PQFP100
封裝: QFP-100
文件頁數(shù): 27/98頁
文件大小: 584K
代理商: W6692ACF
Data Sheet
W6692A PCI ISDN S/T-Controller
Publication Release Date:
Mar,2000
Revision 1.0
-33 -
7.3 Serial Interface Bus
The 192 kbps S/T interface signal consists of two B channels (64 kbps each), one D channel (16 kbps) and other control
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
There are three switching terminals in W6692A: layer 1, layer 2, CODEC interface. Layer 1 can be S/T or U. CODEC
interface can be PCM port or GCI bus. They are set in in GCR register.
GMODE
GACT
Layer 1
CODEC Interface
GCI Mode
0
internal S/T
PCM Port
Master
0
1
internal S/T
GCI Bus
Master
1
x
enternal U transceiver PCM Port
Slave
The B1 and B2 channel switchings are programmed independently. The switching matrix is controlled by PXC bit in PCTL
register and B1_SW[1:0], B2_SW[1:0] bits in B1_MODE and B2_MODE registers as follows :
PCM1/GCI_B1 Receive Table
PXC
B1_SW[1:0]
B2_SW[1:0]
PCM1/GCI_B1 Rx
0
00
xx
L1_B1
0
01
xx
L1_B1
0
10
xx
L2_B1
0
11
xx
PCM1/GCI_B1
1
xx
00
L1_B2
1
xx
01
L1_B2
1
xx
10
L2_B2
1
xx
11
PCM2/GCI_B2
PCM2/GCI_B2 Receive Table
PXC
B1_SW[1:0]
B2_SW[1:0]
PCM2/GCI_B2 Rx
0
xx
00
L1_B2
0
xx
01
L1_B2
0
xx
10
L2_B2
0
xx
11
PCM2/GCI_B2
1
00
xx
L1_B1
1
01
xx
L1_B1
1
10
xx
L2_B1
1
11
xx
PCM1/GCI_B1
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