MT9092
FCODEC Gain Control Register 2
ADDRESS = 0Bh WRITE/READ VERIFY
Power Reset Value
0X00 X000
NCTG NCTG
STG
2
STG STG
1 0
-
-
-
1
0
2
7
6
5
4
3
1
0
Side-tone Gain
Setting (dB)
Gain (dB)
NCTG1
NCTG0
STG2
STG1
STG0
0 (default)
-8
0
0
1
1
0
1
0
1
(default) OFF
-9.96
-6.64
-3.32
0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
-16
-24
NCTGn = New Call Tone Gain n
3.32
6.64
9.96
STGn= Side-tone Gain n
ADDRESSES 0Ch and 0Dh are RESERVED
ADDRESS = 0Eh WRITE/READ VERIFY
Transducer Control Register
Power Reset Value
HSSPKR
MIC/
DIAL
EN
SIDE
EN
MIC
EN
SPKR
EN
0000 0000
PuFC Tfhp
HNSTMIC
EN
7
6
5
4
3
2
1
0
PuFC
When high, the Filter/CODEC is powered up. When low, the Filter/CODEC is powered down. If PuFC, SPKR EN and
HSSPKR EN are all low then the VRef/VBias circuit is also powered down.
Tfhp
When high, an additional high pass function (passband beginning at 400Hz) is inserted into the transmit path. When
low, this highpass filter is disabled.
DIAL EN
When high, a first order lowpass filter is inserted into the receive path (3dB = 1kHz). When low, this lowpass filter is
disabled.
SIDE EN
MIC EN
When high, the sidetone path is enabled (assuming STG2-0 are not all low). When low, the sidetone path is disabled.
When high, the selected transmit microphone is enabled to the transmit filter section. When low, the microphone
path is muted.
MIC/HNSTMIC
When high, the handsfree microphone (pins MIC±) is muxed into the transmit path. When low, the handset
microphone (pins M±) is muxed into the transmit path. Both are contingent on 'MIC EN".
SPKR EN
When high, the handsfree loudspeaker driver is powered up. When low, this driver is powered down.
When high, the handset speaker driver is powered up. When low, this driver is powered down.
HSSPKR EN
Note: Bits marked "-" are reserved bits and should be written with logic "0".
7-26
MITEL [ MITEL NETWORKS CORPORATION ]
