Datasheet

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Within 1/f
S
Normal Data
VCOM
(0.5 V
CC
2)
Undefined
Data
Normal Data
SynchronousAsynchronousSynchronous
Resynchronization
Synchronization Lost
DAC V
OUT
State of Synchronization
T0020-04
Normal Data
(1)
Zero DataNormal Data
ADC DOUT
Undefined
Data
32/f
S
Undefined
Data
22.2/f
S
OPERATIONAL CONTROL
B8
B15
ML
MC
MD
B9B10B11B12B13B14 B0
B7
B1B2B3B4B5B6
T0023-01
PCM3000
PCM3001
SBAS055A – OCTOBER 2000 – REVISED OCTOBER 2004
(1) The HPF transient response (exponentially attenuated signal from ± 1.5% dc with 200-ms time constant) appears
initially.
Figure 28. DAC Output and ADC Output For Loss of Synchronization
The PCM3000 can be controlled in the software mode with a three-wire serial interface on MC (pin 25),
MD (pin 26), and ML (pin 27). Table 2 indicates selectable functions, and Figure 29 and Figure 30 illustrate
control data input format and timing. The PCM3001 only allows for control of data format.
Table 2. Selectable Functions
FUNCTION ADC/DAC DEFAULT (PCM3000)
Audio data format (7 selectable formats) ADC/DAC DAC: 16-bit, MSB-first, right-justified
ADC: 16-bit, MSB-first, left-justified
LRCIN polarity ADC/DAC Left/right = high/low
Loopback control ADC/DAC OFF
Left-channel attenuation DAC 0 dB
Right-channel attenuation DAC 0 dB
Attenuation control DAC Left channel and right channel = individual control
Infinite zero detection DAC OFF
DAC output control DAC Output enabled
Soft mute control DAC OFF
De-emphasis (OFF, 32 kHz, 44.1 kHz, 48 kHz) DAC OFF
Power-down control ADC OFF
High-pass filter operation ADC ON
Figure 29. Control Data Input Format
26