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參數(shù)資料
型號(hào): W66910CD
廠商: WINBOND ELECTRONICS CORP
元件分類: 通信及網(wǎng)絡(luò)
英文描述: TE Mode ISDN S/T-Controller with Microprocessor Interface
中文描述: SPECIALTY TELECOM CIRCUIT, PQFP100
封裝: 14 X 20 MM, 1.40 MM HEIGHT, QFP-100
文件頁(yè)數(shù): 31/81頁(yè)
文件大小: 681K
代理商: W66910CD
Data Sheet
W66910 PCI ISDN S/T-Controller
Publication Release Date:
Feb,2001
Revision 1.0
-31 -
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 W66910: 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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