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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
Full rate (= fSCKI)
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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