PCM5310PAPR datasheet(31/103 Pages) TI

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DAC AND FILTER

DAC-1L

Interpolation

Filter

DEM

DAC-1R

Interpolation

Filter

DEM

DAC-2L

Interpolation

Filter

DEM

DAC-2R

Interpolation

Filter

ATT

MUTE

GAIN

DEM

ATT

MUTE

GAIN

ATT

MUTE

GAIN

ATT

MUTE

GAIN

PCM5310

www.ti.com ............................................................................................................................................................................................ SLES244 – FEBRUARY 2009

The digital-to-analog converter (DAC) and digital filter include a delta-sigma modulator, interpolation filter,

de-emphasis filter (DEM), digital gain control, digital attenuation control, digital soft mute, and digital gain boost,

as shown in Figure 38. The digital gain or attenuation control can be adjusted from 20 dB to –100 dB in 0.5-dB

steps. To play back low-volume recorded audio data, the digital gain can be used with a boost of either 6 dB,

12 dB, or 18 dB selected through the I2C interface. The descriptions for the DAC and filter registers are shown in

Table 14.

Figure 38. DACs and Filters

Table 15. DAC and Filter Registers

Digital attenuation and gain update control for DAC12

D12E, DUC2, DUC1, DZ12

Digital soft mute and boost setting for DAC12

DMU2, DMU1, DB12[1:0]

Digital attenuation and gain level setting for DAC12

42, 43

DAT2[7:0], DAT1[7:0]

De-emphasis filter setting for DAC12

DM12, DF12[1:0]

Digital attenuation and gain update control for DAC34

D34E, DUC4, DUC3, DZ34

Digital soft mute setting for DAC34

DMU4, DMU3

Digital attenuation and gain level setting for DAC34

52, 53

DAT4[7:0], DAT3[7:0]

De-emphasis filter setting for DAC34

DM34, DF34[1:0]

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