T-8110L AGERE [Agere Systems], T-8110L Datasheet - Page 121

• Manufacturer Part Number: T-8110L
• Manufacturer: AGERE [Agere Systems]

February 2004
Agere Systems Inc.
12 Connection Control
12.2 Switching Operation
12.2.2 Standard Switching (continued)
12.2.2.1 Subrate (continued)
Subrate Packing of Outgoing Bytes (continued)
Notes:
Connectivity is as follows:
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Required connection memory programming is as follows:
Five 1/2 simplex connections are required to pack four incoming di-bits into an outgoing byte.
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From stream a, time slot n, bits[1:0] to stream e, time slot n + 10, bits[7:6].
From stream b, time slot n + 1, bits[1:0] to stream e, time slot n + 10, bits[3:2].
From stream c, time slot n + 2, bits[3:2] to stream e, time slot n + 10, bits[1:0].
From stream d, time slot n + 3, bits[5:4] to stream e, time slot n + 10, bits[5:4].
From stream a, time slot n. Connection memory subrate field = 0100X11.
From stream b, time slot n + 1. Connection memory subrate field = 0100X01.
From stream c, time slot n + 2. Connection memory subrate field = 0101X00.
From stream d, time slot n + 3. Connection memory subrate field = 0110X10.
To stream e, time slot n + 10. Connection memory subrate field is don't care.
STREAM a, DI-BIT CHANNELS IN
STREAM b, DI-BIT CHANNELS IN
STREAM c, DI-BIT CHANNELS IN
STREAM d, DI-BIT CHANNELS IN
STREAM e, DI-BIT CHANNELS OUT
BIT POSTITIONS OF DI-BITS
WITHIN THE DATA BYTE
TIME SLOT
Figure 25. Subrate Switching Example, Byte Packing
(continued)
(continued)
7:
a
1
6
5:
a
2
4
n
3:
a
3
2
1:
a
4
0
7:
b
1
6
n + 1
5:
4
b
2
3:
b
3
2
FRAME (8 kHz)
1:
b
4
0
7:
c
1
6
Ambassador T8110L H.100/H.110 Switch
n + 2
5:
c
2
4
3:
3
2
c
1:
4
0
c
7:
d
1
6
n + 3
5:
4
d
2
3:
2
d
3
1:
d
4
0
7:
a
4
6
n + 10
5:
d
2
4
3:
b
4
2
1:
c
3
0
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