MT9092
DSP Control Register
ADDRESS = 1Eh WRITE/READ VERIFY
Power Reset Value
0000 0000
PS2
7
PS1
PS0
5
RxMUTE TxMUTE
-
DRESET
0
OPT
4
6
3
2
1
OPT:
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 receive PCM channel, substituting quiet code.
RxMUTE:
TxMUTE:
DRESET:
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.
PS2-PS0:
These bits are program select bits for the DSP Rom programs.
PS2
PS1
PS0
MICRO-PROGRAM
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Power up reset program
Gain control program
DTMF & Gain control program
Tone Ringer & Gain control program
Handsfree program
Reserved
Reserved
Reserved
Transmit Audio Gain Register
ADDRESS = 20h WRITE/READ VERIFY
Power Reset Value
XX11 0000
-
-
B5
5
B4
4
B3
3
B2
2
B1
1
B0
0
7
6
This register controls the transmit speech path gain in 1.5dB steps as in Receive Gain Register (address 1Dh).
ADDRESS = 21h WRITE/READ VERIFY
Transmit DTMF Gain Register
Power Reset Value
XX10 1110
-
-
B5
5
B4
4
B3
3
B2
2
B1
1
B0
0
7
6
This register controls the transmit DTMF level in 1.5dB steps as in Receive Gain Register (address 1Dh).
ADDRESS 22h is RESERVED
Note: Bits marked "-" are reserved bits and should be written with logic "0".
7-30
MITEL [ MITEL NETWORKS CORPORATION ]
