TSC2100 Datasheet, PDF (48/71 Pages) Texas Instruments – PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH INTEGRATED STEREO AUDIO CODEC AND HEADPHONE/SPEAKER AMPLIFIER

TSC2100
SLAS378− NOVEMBER 2003
www.ti.com
REGISTER 03H: CODEC Sidetone Control
BIT
NAME
READ/
WRITE
RESET
VALUE
FUNCTION
D15
ASTMU
R/W
1
Analog Sidetone Mute Control
1 => Analog sidetone mute
0 => Analog sidetone not muted
D14−D8 ASTG
R/W
1000101 Analog Sidetone Gain Setting
0000000 => Analog sidetone gain setting = −34.5dB
0000001 => Analog sidetone gain setting = −34dB
0000010 => Analog sidetone gain setting = −33.5dB
−−−−−
1000101 => Analog sidetone gain setting = 0dB
1000110 => Analog sidetone gain setting = 0.5dB
−−−−−
1011100 => Analog sidetone gain setting = 11.5dB
1011101 => Analog sidetone gain setting = 12dB
1011110 => Analog sidetone gain setting = 12dB
1011111 => Analog sidetone gain setting = 12dB
−−−−−
11xxxxx => Analog sidetone gain setting = 12dB
D7
DSTMU
R/W
1
Digital Sidetone Mute Control
1 => Digital sidetone muted
0 => Digital sidetone not muted
D6−D1 DSTG
R/W
000000 Digital Sidetone Setting
000000 => Digital sidetone gain = 0dB
000001 => Digital sidetone gain = −1.5dB
000010 => Digital sidetone gain = −3.0dB
−−−−−
1xxxxx => Digital sidetone gain = −48dB
Note: Digital sidetone setting applied at zero cross over
D0
ASTGF
R
0
Analog Sidetone PGA Flag ( Read Only )
0 => Gain applied /= PGA register setting
1 => PGA applied = PGA register setting.
Note: Analog sidetone gain is implemented at zero crossings of the signal.
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