W66910 Datasheet, PDF (32/81 Pages) Winbond – TE Mode ISDN S/T-Controller with Microprocessor Interface

Data Sheet
W66910 PCI ISDN S/T-Controller
Layer2-B1 Receive Table
PXC B1_SW[1:0] B2_SW[1:0] L2_B1 Rx
x
00
xx
L1_B1
x
01
xx
L1_B1
0
10
xx
PCM1/GCI_B1
1
10
xx
PCM2/GCI_B2
x
11
xx
L1_B1
Layer2-B2 Receive Table
PXC B1_SW[1:0] B2_SW[1:0] L2_B2 Rx
x
xx
00
L1_B2
x
xx
01
L1_B2
0
xx
10
PCM2/GCI_B2
1
xx
10
PCM1/GCI_B1
x
xx
11
L1_B2
Layer1-B1 Receive Table
PXC B1_SW[1:0] B2_SW[1:0] L1_B1 Rx
x
00
xx
L2_B1
0
01
xx
PCM1/GCI_B1
1
01
xx
PCM2/GCI_B2
x
10
xx
High
x
11
xx
L2_B1
Layer1-B2 Receive Table
PXC B1_SW[1:0] B2_SW[1:0] L1_B2 Rx
x
xx
00
L2_B2
0
xx
01
PCM2/GCI_B2
1
xx
01
PCM1/GCI_B1
x
xx
10
High
x
xx
11
L2_B2
For example, to switch Layer1-B1 to/from PCM2/GCI_B2 : First look at Layer1-B1 receive table, we find that PXC=1 and
B1_SW[1:0] = 01 in order to receive PCM2/GCI_B2. Secondly look at PCM2/GCI_B2 receive table, we find that, to receive
L1_B1, there are two combinations of PXC, B1_SW[1:0] : 100 or 101. The logical AND result of these two tables is PXC=1,
B1_SW[1:0]=01. This is the value which must be programmed in the registers.
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Publication Release Date: Feb,2001
Revision 1.0