mt9092apr1 Zarlink Semiconductor, mt9092apr1 Datasheet - Page 28

• Manufacturer Part Number: mt9092apr1
• Description: Fully Featured Digital Telephone Circuit With Embedded Hdlc Transceiver And Dsp For Tone Generations And Hands Free Operation
• Manufacturer: Zarlink Semiconductor

Note: Bits marked "-" are reserved bits and should be written with logic "0".
FCODEC Gain Control Register 2
Transducer Control Register
PuFC
Tfhp
DIAL EN
SIDE EN
MIC EN
MIC/HNSTMIC
SPKR EN
HSSPKR EN
PuFC
NCTG
-
7
7
When high, the Filter/CODEC is powered up. When low, the Filter/CODEC is powered down. If PuFC, SPKR EN and
When high, the sidetone path is enabled (assuming STG
When high, the selected transmit microphone is enabled to the transmit filter section. When low, the microphone path is muted.
When high, the handset speaker driver is powered up. When low, this driver is powered down.
HSSPKR EN are all low then the VRef/VBias circuit is also powered down.
When high, an additional high pass function (passband beginning at 400Hz) is inserted into the transmit path. When low, this
highpass filter is disabled.
When high, a first order lowpass filter is inserted into the receive path (3dB = 1kHz). When low, this lowpass filter is disabled.
When high, the handsfree microphone (pins MIC
M
When high, the handsfree loudspeaker driver is powered up. When low, this driver is powered down.
Gain (dB)
0 (default)
n
±
-16
-24
= New Call Tone Gain n
) is muxed into the transmit path. Both are contingent on 'MIC EN".
-8
Tfhp
-
6
6
NCTG
DIAL
5
EN
NCTG
5
1
0
0
1
1
NCTG
1
4
SIDE
EN
4
0
NCTG
Zarlink Semiconductor Inc.
0
1
0
1
-
3
0
MIC
EN
MT9092
3
STG
±
28
) is muxed into the transmit path. When low, the handset microphone (pins
2
HNSTMIC
MIC/
2
2-0
2
are not all low). When low, the sidetone path is disabled.
Side-tone Gain
(default) OFF
STG
Setting (dB)
1
-9.96
-6.64
-3.32
3.32
6.64
9.96
SPKR
1
0
EN
1
ADDRESS = 0Eh WRITE/READ VERIFY
STG
ADDRESS = 0Bh WRITE/READ VERIFY
STG
ADDRESSES 0Ch and 0Dh are RESERVED
0
HSSPKR
0
n
= Side-tone Gain n
EN
0
STG
0
0
0
0
1
1
1
1
2
Power Reset Value
Power Reset Value
STG
0
0
1
1
0
0
1
1
0X00 X000
0000 0000
1
Data Sheet
STG
0
1
0
1
0
1
0
1
0