Datasheet

TLV320DAC3100
SLAS671A –FEBRUARY 2010–REVISED MAY 2012 www.ti.com
Page 0 / Register 79 (0x4F): Beep Cos(x) LSB
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7–D0 R/W 1110 0011 8 LSBs out of 16 bits for cos(2π × f
in
/f
S
), where f
in
is the beep frequency and f
S
is the DAC sample rate.
Page 0 / Register 80 (0x50) Through Page 0 / Register 115 (0x73): Reserved
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7–D0 R XXXX XXXX Reserved. Do not use.
Page 0 / Register 116 (0x74): VOL/MICDET-Pin SAR ADC – Volume Control
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7 R/W 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.
D6 R/W 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.
D5–D4 R/W 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.
D3 R/W 0 Reserved. Write only reset value.
D2–D0 R/W 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 = 15.625 Hz 10.68 Hz
001: Throughput = 31.25 Hz 21.35 Hz
010: Throughput = 62.5 Hz 42.71 Hz
011: Throughput = 125 Hz 8.2 Hz
100: Throughput = 250 Hz 170 Hz
101: Throughput = 500 Hz 340 Hz
110: Throughput = 1 kHz 680 Hz
111: Throughput = 2 kHz 1.37 kHz
Note: These values are based on a nominal oscillator
frequency of 8.2 MHz. The values scale according to
the actual oscillator frequency.
Page 0 / Register 117 (0x75): VOL/MICDET-Pin Gain
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7 R 0 Reserved. Write only zero to this bit.
D6–D0 R XXX XXXX 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
Page 0 / Register 118 (0x76) Through Page 0 / Register 127 (0x7F): Reserved
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7–D0 R XXXX XXXX Reserved. Do not use.
74 REGISTER MAP Copyright © 2010–2012, Texas Instruments Incorporated
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