Cirrus-logic CS4362 Manuel d'utilisateur télécharger pdf (Page 17)

DS257F2 17

CS4362

4.1.5 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.

4.2 Mode Control 2 (address 02h)

4.2.1 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 to 38.

Note: While in PCM Mode, the DIF bits should only be changed when the power-down (PDN) bit is set

to ensure proper switching from one mode to another.

76543210

Reserved DIF2 DIF1 DIF0 Reserved SDIN3CLK SDIN2CLK SDIN1CLK

00000000

DIF2 DIF1 DIF0 DESCRIPTION Format FIGURE

000

Left Justified, up to 24-bit data

0 33

001

I²S, up to 24-bit data

1 34

010

Right Justified, 16-bit data

2 35

011

Right Justified, 24-bit data

3 36

100

Right Justified, 20-bit data

4 37

101

Right Justified, 18-bit data

5 38

110

Reserved

111

Reserved

Table 1. Digital Interface Formats - PCM Mode

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 41 42

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Cirrus-logic CS4362 Manuel d'utilisateur Page 17

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