Datasheet

TLV320DAC3100
www.ti.com SLAS671A –FEBRUARY 2010–REVISED MAY 2012
Page 1 / Register 44 (0x2C): HP Driver Control
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7–D5 R/W 000 Debounce Time for Headset Short-Circuit Detection
MCLK/DIV (Page 3 /
(1)
register 16) = 1-MHz Internal Oscillator Source
Source
000: Debounce time = 0 μs 0 μs
001: Debounce time = 8 μs 7.8 μs
010: Debounce time = 16 μs 15.6 μs
011: Debounce time = 32 μs 31.2 μs
100: Debounce time = 64 μs 62.4 μs
101: Debounce time = 128 μs 124.9 μs
110: Debounce time = 256 μs 250 μs
111: Debounce time = 512 μs 500 μs
Note: These values are based on a nominal oscillator
frequency of 8.2 MHz. The values scale according to
the actual oscillator frequency.
D4–D3 R/W 00 00: Default mode for the DAC
01: DAC performance increased by increasing the current
10: Reserved
11: DAC performance increased further by increasing the current again
D2 R/W 0 0: HPL output driver is programmed as headphone driver.
1: HPL output driver is programmed as lineout driver.
D1 R/W 0 0: HPR output driver is programmed as headphone driver.
1: HPR output driver is programmed as lineout driver.
D0 R/W 0 Reserved. Write only zero to this bit.
(1) The clock used for the debounce has a clock period = debounce duration/8.
Page 1 / Register 45 (0x2D): Reserved
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7–D0 R/W XXXX XXXX Reserved. Do not write to this register.
Page 1 / Register 46 (0x2E): MICBIAS
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7 R/W 0 0: Device software power down is not enabled.
1: Device software power down is enabled.
D6–D4 R/W 000 Reserved. Write only zeros to these bits.
D3 R/W 0 0: Programmed MICBIAS is not powered up if headset detection is enabled but headset is not inserted.
1: Programmed MICBIAS is powered up even if headset is not inserted.
D2 R/W 0 Reserved. Write only zero to this bit.
D1–D0 R/W 00 00: MICBIAS output is powered down.
01: MICBIAS output is powered to 2 V.
10: MICBIAS output is powered to 2.5 V.
11: MICBIAS output is powered to AVDD.
Page 1 / Register 47 (0x2F) Through Page 1 / Register 49 (0x31): Reserved
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7–D0 R XXXX XXXX Reserved. Do not write to these bits.
Page 1 / Register 50 (0x32): Input CM Settings
READ/ RESET
BIT DESCRIPTION
WRITE VALUE
D7 R/W 0 0: AIN1 input is floating if it is not used for analog bypass.
1: AIN1 input is connected to CM internally if it is not used for analog bypass.
D6 R/W 0 0: AIN2 input is floating if it is not used for analog bypass.
1: AIN2 input is connected to CM internally if it is not used for analog bypass.
D5–D0 R/W 00 0000 Reserved. Write only zeros to these bits.
Copyright © 2010–2012, Texas Instruments Incorporated REGISTER MAP 79
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