MT9122 Zarlink Semiconductor, MT9122 Datasheet - Page 2

• Manufacturer Part Number: MT9122
• Description: Dual Voice Echo CANceller (ITU-T G165 Compliant) With Disable Tone Detection
• Manufacturer: Zarlink Semiconductor

MT9122
Pin Description
2
Pin #
1
2
3
4
FORMAT
PWRDN
Name
ENA1
ENB1
ENA2
ENB2
MCLK
ENA2
ENA1
ENB1
ENB2
LAW
NLP
REV
VSS
Rin
Sin
IC
SSI Enable Strobe / ST-BUS Mode for Rin/Sout (Input). This pin has dual functions
depending on whether SSI or ST-BUS is selected.
For SSI, this strobe must be present for frame synchronization. This is an active high channel
enable strobe, 8 or 16 data bits wide, enabling serial PCM data transfer for Echo Canceller A
on Rin/Sout pins. Strobe period is 125 microseconds.
For ST-BUS, this pin, in conjunction with the ENB1 pin, will select the proper ST-BUS mode
for Rin/Sout pins (see ST-BUS Operation description). The selected mode applies to both
Echo Canceller A and B.
SSI Enable Strobe / ST-BUS Mode for Rin/Sout (Input).This pin has dual functions
depending on whether SSI or ST-BUS is selected.
For SSI, this is an active high channel enable strobe, 8 or 16 data bits wide, enabling serial
PCM data transfer for Echo Canceller B on Rin/Sout pins. Strobe period is 125 microseconds.
For ST-BUS, this pin, in conjunction with the ENA1 pin, will select the proper ST-BUS mode
for Rin/Sout pins (see ST-BUS Operation description). The selected mode applies to both
Echo Canceller A and B.
SSI Enable Strobe / ST-BUS Mode for Sin/Rout (Input).This pin has dual functions
depending on whether SSI or ST-BUS is selected.
For SSI, this is an active high channel enable strobe, 8 or 16 data bits wide, enabling serial
PCM data transfer for Echo Canceller A on Sin/Rout pins. Strobe period is 125 microseconds.
For ST-BUS, this pin, in conjunction with the ENB2 pin, will select the proper ST-BUS mode
for Sin/Rout pins (see ST-BUS Operation description). The selected mode applies to both
Echo Canceller A and B.
SSI Enable Strobe / ST-BUS Mode for Sin/Rout (Input).This pin has dual functions
depending on whether SSI or ST-BUS is selected.
For SSI, this is an active high channel enable strobe, 8 or 16 data bits wide, enabling serial
PCM data transfer for Echo Canceller B on Sin/Rout pins. Strobe period is 125 microseconds.
For ST-BUS, this pin, in conjunction with the ENA2 pin, will select the proper ST-BUS mode
for Sin/Rout pins (see ST-BUS Operation description). The selected mode applies to both
Echo Canceller A and B.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
PDIP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
F0i
CONFIG2
CONFIG1
BCLK/C4i
Rout
Sout
VDD
F0od
S1/DATA1
S2/DATA2
S4/SCLK
TD1
TD2
S3/CS
Figure 2 - Pin Connections
MCLK
Description
REV
VSS
NLP
Rin
Sin
IC
5
6
7
8
9
10
11
PLCC
•
25
24
23
22
21
20
19
F0i
Rout
Sout
VDD
F0od
S1/DATA1
S2/DATA2
Data Sheet