MT93L16AQ Zarlink Semiconductor, MT93L16AQ Datasheet - Page 7

• Manufacturer Part Number: MT93L16AQ
• Description: Description = Low Voltage (3.3V) Acoustic Echo CANceller For Hands-free Applications ;; Package Type = Qsop ;; No. Of Pins = 36
• Manufacturer: Zarlink Semiconductor

Preliminary Information
ST-BUS/GCI Mode 3 supports connection to 2B+D devices where timeslots 0 and 1 transport D and C channels and echo canceller
(EC) I/O channels are assigned to ST-BUS timeslot 2 (B). Both PORT1 and PORT2 must be configured in Mode 3.
In ST-BUS/GCI Mode 2, echo canceller I/O channels are assigned to ST-BUS/GCI timeslot 2. Note that the user can configure PORT1
and PORT2 into different modes.
PORT2
F0i (GCI)
Rin
Sout
Sin
Rout
F0i (ST-BUS)
PORT1
C4i
F0i (ST-BUS)
F0i (GCI)
PORT1
Rin
Sout
PORT2
Sin
Rout
C4i
Figure 5 - ST-BUS and GCI 8-Bit Companded PCM I/O with D and C channels (Mode 3)
Figure 4 - ST-BUS and GCI 8-Bit Companded PCM I/O on Timeslot 2 (Mode 2)
outputs = High impedance
indicates that an input channel is bypassed to an output channel
inputs = don’t care
outputs = High impedance
inputs = don’t care
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
start of frame (stbus & GCI)
start of frame (stbus & GCI)
D
0
0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
C
1
1
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
EC
EC
B
2
EC
EC
B
2
3
3
MT93L16
4
4
7