W66910CD Winbond Electronics, W66910CD Datasheet - Page 31

• Manufacturer Part Number: W66910CD
• Manufacturer: Winbond Electronics

Specifications of W66910CD

• Lead Free Status / Rohs Status: Not Compliant

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.
register and B1_SW[1:0], B2_SW[1:0] bits in B1_MODE and B2_MODE registers as follows :
The B1 and B2 channel switchings are programmed independently. The switching matrix is controlled by PXC bit in PCTL
GMODE GACT Layer 1
0
0
1
0
1
x
internal S/T
internal S/T
enternal U transceiver PCM Port
PXC
0
0
0
0
1
1
1
1
PXC
0
0
0
0
1
1
1
1
B1_SW[1:0]
xx
xx
xx
xx
00
01
10
11
B1_SW[1:0]
CODEC Interface
PCM Port
GCI Bus
00
01
10
11
xx
xx
xx
xx
PCM1/GCI_B1 Receive Table
PCM2/GCI_B2 Receive Table
B2_SW[1:0]
00
01
10
11
xx
xx
xx
xx
B2_SW[1:0]
-31 -
xx
xx
xx
xx
00
01
10
11
GCI Mode
Master
Master
Slave
PCM1/GCI_B1 Rx
PCM2/GCI_B2 Rx
L1_B2
L1_B2
L2_B2
PCM2/GCI_B2
L1_B1
L1_B1
L2_B1
PCM1/GCI_B1
PCM1/GCI_B1
PCM2/GCI_B2
W66910 PCI ISDN S/T-Controller
L1_B1
L1_B1
L2_B1
L1_B2
L1_B2
L2_B2
Publication Release Date:
Data Sheet
Revision 1.0
Feb,2001