CS4365
5.2.3 PCM/DSD Selection (DSD/PCM)
Default = 0
0 - PCM
1 - DSD
Function:
This function selects DSD or PCM Mode. The appropriate data and clocks should be present before chang-
ing modes, or else MUTE should be selected.
5.2.4 DAC Pair Disable (DACx_DIS)
Default = 0
0 - Enabled
1 - Disabled
Function:
When enabled the respective DAC channel pairx (AOUTAx and AOUTBx) will remain in a reset state. It is
advised that changes to these bits be made while the power down bit is enabled to eliminate the possibility
of audible artifacts.
5.2.5 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 dis-
abled before normal operation in Control Port mode can occur.
5.3
PCM Control (address 03h)
7
DIF3
0
6
DIF2
0
5
DIF1
0
4
DIF0
0
3
Reserved
0
2
Reserved
0
1
FM1
1
0
FM0
1
5.3.1 Digital Interface Format (dif)
Default = 0000 - Format 0 (Left Justified, up to 24-bit data)
Function:
These bits select the interface format for the serial audio input. The DSD/PCM bit determines whether PCM
or DSD mode is selected.
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 9-17.
DS670PP1
35
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