
TSC2117
Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D
Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller
SLAS550A – APRIL 2009 – REVISED JUNE 2009
www.ti.com
Page 0/Register 93: AGC Gain-Applied Reading
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7–D0
R
XXXX XXXX
–24: Gain applied by AGC = –12 dB
–23: Gain applied by AGC = –11.5 dB
...
0: Gain applied by AGC = 0 dB
...
115: Gain applied by AGC = 57.5 dB
116: Gain applied by AGC = 58 dB
117: Gain applied by AGC = 58.5 dB
118: Gain applied by AGC = 59 dB
119: Gain applied by AGC = 59.5 dB
Page 0/Registers 94–101: Reserved
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7–D0
R/W
XXXX XXXX
Reserved. Do not write to these registers.
Page 0/Register 102: ADC DC Measurement 1
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7
R/W
0
0: DC measurement is Disabled for mono ADC channel
1: DC measurment is Enabled for mono ADC channel
D6
R/W
0
Reserved. Write only reset value.
D5
R/W
0
0: DC measurement is done based on 1st order sinc filter with averaging of 2D
1: DC measurment is done based on 1st order low-pass IIR filter whose coefficients are calculated
based on D value
D4–D0
R/W
00000
DC Meaurement D setting:
00000: Reserved. Don't use.
00001: D = 1
00010: D = 2
...
10011: D = 19
10100: D = 20
10101 to 11111: Reserved. Don't use.
Page 0/Register 103: ADC DC Measurement 2
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7
R/W
0
Reserved. Write only reset value.
D6
R/W
0
0: DC measurement data update is enabled.
1: DC measurment data update is disabled. User can read the last updated data without any data
corruption.
D5
R/W
0
0: For IIR based DC measurement, the measurment value is the instantaneous output of the IIR filter
1: For IIR based DC measurement, the measurment value is update before periodic clearing of the IIR
filter
D4–D0
R/W
00000
IIR based DC measurment, average time setting:
00000: Infinite average is used
00001: Averaging time is 21 ADC modulator clock periods
00010: Averaging time is 22 ADC modulator clock periods
...
10011: Averaging time is 219 ADC modulator clock periods
10100: Averaging time is 220 ADC modulator clock periods
10101 to 11111: Reserved. Don't use.
Page 0/Register 104–ADC DC Measurement Output 1
READ/
RESET
BIT
DESCRIPTION
WRITE
VALUE
D7–D0
R
0000 0000
ADC DC Measurement Output (23:16)
128
REGISTER MAP