mt9094apr1 Zarlink Semiconductor, mt9094apr1 Datasheet - Page 20

• Manufacturer Part Number: mt9094apr1
• Description: Fully Featured Digital Telephone Circuit With Embedded Dsp For Tone Generation And Hands Free Operation
• Manufacturer: Zarlink Semiconductor

Note: Bits marked "-" are reserved bits and should be written with logic "0".
DSP Control Register
Transmit Audio Gain Register
Transmit DTMF Gain Register
OPT:
RxMUTE:
TxMUTE:
DRESET:
PS2-PS0:
This register controls the transmit speech path gain in 1.5dB steps as in Receive Gain Register (address 1Dh).
This register controls the transmit DTMF level in 1.5dB steps as in Receive Gain Register (address 1Dh).
PS2
-
-
7
7
7
This bit when high turns off the receive PCM channel, substituting quiet code.
When high, the tone ringer is in New Call tone mode. When low the normal tone ringer program is executed.
This bit when high turns off the transmit PCM channel, substituting quiet code.
This bit (when high) enables the DSP. If low, no programs are executed, the master clock is disabled and the program counter is
reset to zero.
These bits are program select bits for the DSP Rom programs.
-
-
PS1
6
6
6
PS2
0
0
0
0
1
1
1
1
B5
B5
5
5
PS0
5
PS1
B4
B4
0
0
1
1
0
0
1
1
4
4
OPT
4
Zarlink Semiconductor Inc.
PS0
0
1
0
1
0
1
0
1
B3
B3
3
3
MT9094
RxMUTE
3
Power up reset program
Gain control program
DTMF & Gain control program
Tone Ringer & Gain control program
Handsfree program
Reserved
Reserved
Reserved
20
B2
B2
2
2
TxMUTE
MICRO-PROGRAM
2
B1
B1
1
1
ADDRESS = 20h WRITE/READ VERIFY
ADDRESS = 21h WRITE/READ VERIFY
ADDRESS = 1Eh WRITE/READ VERIFY
-
1
B0
B0
0
0
DRESET
0
ADDRESS 1Fh is RESERVED
ADDRESS 22h is RESERVED
Power Reset Value
Power Reset Value
Power Reset Value
0000 0000
XX11 0000
XX10 1110
Data Sheet