AS3658 datasheet(94/158 Pages) AMSCO

94 / 158 page

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Revision 1v13

93 - 157

AS3658

Data Sheet Confidential - Detail ed Descri ption- Audio Functi ons

9.4.3 Parameter

Table 92. Audio DAC/ADC Parameter

Parameter

Min

Typ

Max

Unit

Table 93. I2S Parameter

I2S Inputs and Outputs VI2S=2.9V

Min

Typ

Max

Table 94. DAC_L Register

Addr:77

DAC_L

These bits control the Audio DAC volume and functions

Bit

Bit Name

Default Access

Description

I2S_1 selected, external MCLK on MCLK_1

I2S_1 selected, external MCLK on MCLK_1 (inverted)

I2S_2 selected, external MCLK on MCLK_2

I2S_2 selected, external MCLK on MCLK_2 (inverted)

Analog Performance

Programmable gain DAC input

-43.43

1.07

Programmable gain ADC input

-34.5

Gain step size

1.5

DAC THD+Noise at FS

-85

-75

DAC SN/R (20Hz-20kHz, -60dBFS) A-weighted

DAC Inter channel Mismatch

0.25

ADC SN/R

VIL

SCLKx, LRCLKx, SDIx

0.42V

VIH

SCLKx, LRCLKx, SDIx

1.02V

3.3V

VOL

SDOX,SCLK3,LRCLK3,SPDIF,SCLK1,LRCLK1,MCLK1

VOH

SDOX,SCLK3,LRCLK3,SPDIF,SCLK1,LRCLK1,MCLK1

VI2S

4:0

dal_vol

00000b

R/W

volume settings for left DAC input, adjustable in 32 steps @

1.5dB

00000

-40.5 dB gain

00001

-39 dB gain

.....

11110

4.5 dB gain

11111

6 dB gain

dac_mute_off

R/W

DAC input is set to mute

normal operation

Table 91. PLL,MCLK Settings

I2S_mclk_en

I2S_select

mclk_invert

Description

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