CS4382 Datasheet, PDF (16/42 Pages) Cirrus Logic – 114 dB, 192 kHz 8-Channel D/A Converter

CS4382
3.1.5 POWER DOWN (PDN)
Default = 1
0 - Disabled
1 - Enabled
Function:
The entire device will enter a low-power state when this function is enabled, and the contents of the
control registers are retained in this mode. The power-down bit defaults to ‘enabled’ on power-up and
must be disabled before normal operation in Control Port mode can occur.
3.2 Mode Control 2 (address 02h)
7
Reserved
0
6
DIF2
0
5
DIF1
0
4
DIF0
0
3
SDIN4CLK
0
2
SDIN3CLK
0
1
SDIN2CLK
0
0
SDIN1CLK
0
3.2.1 DIGITAL INTERFACE FORMAT (DIF)
Default = 000 - Format 0 (Left Justified, up to 24-bit data)
Function:
These bits select the interface format for the serial audio input. The Functional Mode bits determine
whether PCM or DSD mode is selected.
PCM Mode: 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 Figures 33-38.
DIF2
0
0
0
0
1
1
1
1
DIF1
0
0
1
1
0
0
1
1
DIF0
0
1
0
1
0
1
0
1
DESCRIPTION
Left Justified, up to 24-bit data
I²S, up to 24-bit data
Right Justified, 16-bit data
Right Justified, 24-bit data
Right Justified, 20-bit data
Right Justified, 18-bit data
Reserved
Reserved
Table 1. Digital Interface Formats - PCM Mode
Format
0
1
2
3
4
5
FIGURE
33
34
35
36
37
38
DSD Mode: The relationship between the oversampling ratio of the DSD audio data and the required
Master clock to DSD data rate is defined by the Digital Interface Format pins. An additional write of 99h
to register 00h and 80h to register 1Ah is required to access the modes denoted with *.
DIF2
0
0
0
0
1
1
1
1
DIF1
0
0
1
1
0
0
1
1
DIFO
0
1
0
1
0
1
0
1
DESCRIPTION
64x oversampled DSD data with a 4x MCLK to DSD data rate
64x oversampled DSD data with a 6x MCLK to DSD data rate
64x oversampled DSD data with a 8x MCLK to DSD data rate
64x oversampled DSD data with a 12x MCLK to DSD data rate
128x oversampled DSD data with a 2x MCLK to DSD data rate
128x oversampled DSD data with a 3x MCLK to DSD data rate
128x oversampled DSD data with a 4x MCLK to DSD data rate
128x oversampled DSD data with a 6x MCLK to DSD data rate
Table 2. Digital Interface Formats - DSD Mode
Note
*
*
*
*
*
*
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DS514F1