MT9123AE 데이터 시트보기 (PDF) - Mitel Networks

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MT9123AE

Dual Voice Echo Canceller

Mitel Networks 

Preliminary Information

MT9123

C4i

F0i

F0od

PORT1

Rin

0

1

2

ECA

ECB

76 54321076 543210

3

4

Sout

PORT2

Sin

76 54321076 543210

ECA

ECB

76 54321076 543210

Rout

76 54321076 543210

outputs=High impedance

inputs = don’t care

In ST-BUS Mode 1, both echo canceller I/O channels are assigned to ST-BUS timeslots 0 and 1. Note that the user

could configure PORT1 and PORT2 into different ST-BUS modes. The pin F0od is always delayed 4 time slots to permit

a more flexible interleave of ST-BUS modes.

Figure 5 - ST-BUS 8 Bit Companded PCM I/O on Timeslots 0 & 1 (Mode 1)

C4i

F0i

F0od

PORT1

Rin

0

1

2

3

4

ECA

ECB

76 54321076 543210

Sout

PORT2

Sin

76 54321076 543210

ECA

ECB

76 54321076 543210

Rout

76 54321076 543210

outputs=High impedance

inputs = don’t care

In ST-BUS Mode 2, both echo canceller I/O channels are assigned to ST-BUS timeslots 2 and 3. Note that the user

could configure PORT1 and PORT2 into different ST-BUS modes. The pin F0od is always delayed 4 time slots to permit

a more flexible interleave of ST-BUS modes.

Figure 6 - ST-BUS 8 Bit Companded PCM I/O on Timeslots 2 & 3 (Mode 2)

8-57

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