PCM1602A

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SLES146A – AUGUST 2005 – REVISED OCTOBER 2010

MODE CONTROL REGISTERS

User-Programmable Mode Controls

The PCM1602A includes a number of user-programmable functions that are accessed via control registers. The

registers are programmed using the serial control interface that is previously discussed in this data sheet.

Table 3 lists the available mode control functions, along with their reset default conditions and associated register

index.

Table 3. User-Programmable Mode Controls

CONTROL

FUNCTION

RESET DEFAULT

BIT(S) LABEL

REGISTER

AT1[7:0], AT2[7:0],

Digital attenuation control, 0 dB to –63 dB in 0.5-dB steps

0 dB, no attenuation

1 through 6

AT3[7:0], AT4[7:0],

AT51[7:0], AT6[7:0]

Soft mute control

Mute disabled

7

MUT[6:1]

DAC1–DAC6 operation control

DAC1–DAC6 enabled

8

DAC[6:1]

Audio data format control

24-bit standard format

9

FMT[2:0]

Digital filter rolloff control

Sharp rolloff

9

FLT

SCKO frequency selection

9

CLKD

SCKO output enable

SCKO enabled

9

CLKE

De-emphasis, all channels

De-emphasis all-channel function control

10

DMC

disabled

De-emphasis all-channel sample rate selection

44.1 kHz

10

DMF[1:0]

Output phase select

Normal phase

10

DREV

Zero-flag polarity select

High

10

ZREV

Read-register index control

REG[6:0] = 01h

11

REG[6:0]

Read auto-increment control

Auto-increment disabled

11

INC

General-purpose output enable

Zero-flag enabled

12

GPOE

General-purpose output bits (GPO1–GPO6)

Disabled

12

GPO[6:1]

Oversampling rate control

64×

12

OVER

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