TSC2117 Datasheet, PDF (129/192 Pages) Texas Instruments – Low-Power Audio Codec With Embedded miniDSP, Stereo Class-D Speaker Amplifier, and Smart Four-Wire Touch-Screen Controller

www.ti.com
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
BIT
READ/
WRITE
D7–D0 R
RESET
VALUE
0000 0000
Page 0/Register 105–ADC DC Measurement Output 2
DESCRIPTION
ADC DC Measurement Output (15:8)
BIT
READ/
WRITE
D7–D0 R
RESET
VALUE
0000 0000
Page 0/Register 106–ADC DC Measurement Output 3
DESCRIPTION
ADC DC Measurement Output (7:0)
BIT
D7–D0
READ/
WRITE
R/W
RESET
VALUE
XXXX XXXX
Page 0/Registers 107–115: Reserved
DESCRIPTION
Reserved. Do not write to these registers.
BIT
READ/
WRITE
D7
R/W
D6
R/W
D5–D4 R/W
D3
R/W
D2–D0 R/W
Page 0/Register 116: VOL/MICDET-Pin SAR ADC – Volume Control
RESET
VALUE
DESCRIPTION
0
0: DAC volume control is controlled by control register. (7-bit Vol ADC is powered down)
1: DAC volume control is controlled by pin.
0
0: Internal on-chip RC oscillator is used for the 7-bit Vol ADC for pin volume control.
1: MCLK is used for the 7-bit Vol ADC for pin volume control.
00
00: No hysteresis for volume control ADC output
01: Hysteresis of ±1 bit
10: Hysteresis of ±2 bits
11: Reserved. Do not write this sequence to these bits.
0
Reserved. Write only reset value.
000
Throughput of the 7-bit Vol ADC for pin volume control, frequency based on MCLK or internal oscillator.
MCLK = 12 MHz
Internal Oscillator Source
000: Throughput =
001: Throughput =
010: Throughput =
011: Throughput =
100: Throughput =
101: Throughput =
110: Throughput =
111: Throughput =
15.625 Hz
31.25 Hz
62.5 Hz
125 Hz
250 Hz
500 Hz
1 kHz
2 kHz
10.68 Hz
21.35 Hz
42.71 Hz
8.2 Hz
170 Hz
340 Hz
680 Hz
1.37 kHz
Note: These values are based on a nominal oscillator
frequency of 8.2 MHz. Values will scale to the actual
oscillator frequency.
BIT
D7
D6–D0
READ/
WRITE
R/W
R
RESET
VALUE
0
XXX XXXX
Page 0/Register 117: VOL/MICDET-Pin Gain
DESCRIPTION
Reserved. Write only zero to this bit.
000 0000: Gain applied by pin volume control = 18 dB
000 0001: Gain applied by pin volume control = 17.5 dB
000 0010: Gain applied by pin volume control = 17 dB
...
010 0011: Gain applied by pin volume control = 0.5 dB
010 0100: Gain applied by pin volume control = 0 dB
010 0101: Gain applied by pin volume control = –0.5 dB
...
101 1001: Gain applied by pin volume control = –26.5 dB
101 1010: Gain applied by pin volume control = –27 dB
101 1011: Gain applied by pin volume control = –28 dB
...
111 1101: Gain applied by pin volume control = –62 dB
111 1110: Gain applied by pin volume control = –63 dB
111 1111: Reserved.
Submit Documentation Feedback
REGISTER MAP 129