CS4364 datasheet(34/50 Pages) CIRRUS

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DS619A1

CS4364

Function:

This function selects DSD or PCM Mode. The appropriate data and clocks should be present before

changing 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 pos-

sibility 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

disabled before normal operation in Control Port mode can occur.

5.3

PCM Control (address 03h)

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.

543

DIF3

DIF2

DIF1

DIF0

Reserved

FM1

FM0

000

DIF3

DIF2

DIF1

DIF0

DESCRIPTION

Format

FIGURE

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

Table 7. Digital Interface Formats - PCM Mode

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