MT93L04 Zarlink Semiconductor, MT93L04 Datasheet - Page 31

• Manufacturer Part Number: MT93L04
• Description: 128-channel Voice Echo Canceller
• Manufacturer: Zarlink Semiconductor

Table 2 is a list of the channels used for the 16 groups of echo cancellers when they are configured as Extended
Delay or Back-to-Back
Normal Configuration
For a given group (group 0 to 15), 2 PCM I/O channels are used. For example, group 1 Echo Cancellers A and B,
channels 2 and 3 are active.
Extended Delay Configuration
For a given group (group 0 to 15), only one PCM I/O channel is active (Echo Canceller A) and the other channel
carries don’t care data. For example, group 2, Echo Canceller A (Channel 4) will be active and Echo Canceller B
(Channel 5) will carry don’t care data.
Back-to-Back Configuration
For a given group (group 0 to 15), only one PCM I/O channel is active (Echo Canceller A) and the other channel
carries don’t care data. For example, group 5, Echo Canceller A (Channel 10) will be active and Echo Canceller B
(Channel 11) will carry don’t care data.
Group
0
1
2
3
4
5
6
7
Table 2 - Group and Channel Allocation
Channel
Zarlink Semiconductor Inc.
12, 13
14, 15
10, 11
0, 1
2, 3
4, 5
6, 7
8, 9
MT93L04
31
Group
10
11
12
13
14
15
8
9
Channel
16, 17
18, 19
20, 21
22, 23
24, 25
26, 27
28, 29
30, 31
Data Sheet