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參數資料
型號: W6694
廠商: WINBOND ELECTRONICS CORP
英文描述: PCI Bus ISDN S/T Interface Controller(PCI總線的ISDN S/T接口控制器)
中文描述: PCI總線的綜合業(yè)務數字網的S / T接口控制器(綜合業(yè)務數字網的PCI總線的S / T的接口控制器)
文件頁數: 33/98頁
文件大小: 1338K
代理商: W6694
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
0
0
internal S/T
PCM Port
0
1
internal S/T
GCI Bus
1
x
enternal U transceiver PCM Port
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]
0
00
0
01
0
10
0
11
1
xx
1
xx
1
xx
1
xx
PCM2/GCI_B2 Receive Table
PXC
B1_SW[1:0]
B2_SW[1:0]
0
xx
00
0
xx
01
0
xx
10
0
xx
11
1
00
xx
1
01
xx
1
10
xx
1
11
xx
GCI Mode
Master
Master
Slave
PCM1/GCI_B1 Rx
L1_B1
L1_B1
L2_B1
PCM1/GCI_B1
L1_B2
L1_B2
L2_B2
PCM2/GCI_B2
xx
xx
xx
xx
00
01
10
11
PCM2/GCI_B2 Rx
L1_B2
L1_B2
L2_B2
PCM2/GCI_B2
L1_B1
L1_B1
L2_B1
PCM1/GCI_B1
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