CS42L51 Datasheet, PDF (50/83 Pages) Cirrus Logic – Low Power, Stereo CODEC with Headphone Amp

CS42L51
DAC Digital Interface Format (DAC_DIF[2:0])
Default = 000
DAC_DIF[2:0]
000
001
010
011
100
101
110
100
Description
Left Justified, up to 24-bit data
I²S, up to 24-bit data
Right Justified, 24-bit data
Right Justified, 20-bit data
Right Justified, 18-bit data
Right Justified, 16-bit data
Reserved
Reserved
Figure
21 on page 39
20 on page 39
22 on page 39
22 on page 39
22 on page 39
22 on page 39
-
-
Function:
Selects the digital interface format used for the data in on SDIN. The required relationship between the
Left/Right clock, serial clock and serial data is defined by the Digital Interface Format and the options are
detailed in the section “Digital Interface Formats” on page 39.
ADC I²S or Left-Justified (ADC_I²S/LJ)
Default: 0
0 - Left-Justified
1 - I²S
Function:
Selects either the I²S or Left-Justified digital interface format for the data on SDOUT. The required relation-
ship between the Left/Right clock, serial clock and serial data is defined by the Digital Interface Format and
the options are detailed in the section “Digital Interface Formats” on page 39.
Digital Mix (DIGMIX)
Default: 0
DIGMIX
0
1
DATA_SEL[1:0]
xx
00
01
10
11
Mix Selected
No Mix: ADC to ADC serial port, SDOUT data.
No Mix: SDIN data to ADC serial port, SDOUT data.
Mix: ADC + SDIN data to ADC serial port, SDOUT data.
No Mix: ADC to ADC serial port, SDOUT data.
Reserved
Function:
Selects between the ADC or a digital mix of the ADC and DAC into the serial port to the SDOUT pin. This
mix function is affected by the data select bits DATA_SEL[1:0].
Microphone Mix (MICMIX)
Default: 0
0 - Disabled; No Mix: Left/Right Channel to ADC serial port, SDOUT.
1 - Enabled; Mix: Differential mix ((A-B)/2)to ADC serial port, SDOUT.
Function:
Selects between the ADC stereo mix or a differential mix of analog inputs A and B.
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DS679A2