PCM3793RHB BURR-BROWN [Burr-Brown Corporation], PCM3793RHB Datasheet - Page 21

• Manufacturer Part Number: PCM3793RHB
• Description: 16-Bit, Low-Power Stereo Audio CODEC With Microphone Bias, Headphone, and Digital Speaker Amplifier
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

Audio Serial Interface
The audio serial interface for the PCM3793/94 comprises LRCK, BCK, DIN, and DOUT. Sampling rate (f
and right channel are present on LRCK. DIN receives the serial data for the DAC interpolation filter, and DOUT
transmits the serial data from the ADC decimation filter. BCK clocks the transfer of serial audio data on DIN and
DOUT in its high-to-low transition. BCK and LRCK should be synchronized with audio system clock. Ideally, it is
recommended that they be derived from it.
The PCM3793/94 requires LRCK to be synchronized with the system clock. The PCM3793/94 does not require
a specific phase relationship between LRCK and the system clock.
The PCM3793/94 has both master mode and slave mode interface formats, which can be selected by register
84, MSTR. In master mode, the PCM3793/94 generates LRCK and BCK from the system clock.
Audio Data Formats and Timing
The PCM3793/94 supports I
Figure 28
MSB-first audio data. The default format is I
All Power Down
All Active
PLAYBACK WITH DIGITAL INPUT
Line output and headphone output
Headphone output with sound effect
Capless headphone output
Headphone output with line input (AIN2L/AIN2R)
Headphone output with mono microphone input (AIN1L, 20 dB)
Headphone output with mono differential microphone input
(AIN1L/AIN1R, 20 dB)
Stereo speaker output
Mono speaker output
Speaker output with line input (AIN2L/AIN2R)
Speaker output with mono microphone input (AIN1L, 20 dB)
Speaker output with mono differential microphone input
(AIN1L/AIN1R, 20 dB)
PLAYBACK WITHOUT DIGITAL INPUT
Line input (AIN2L/AIN2R) to headphone output
Mono line input (AIN2L) to headphone output
Mono microphone Input (AIN1L, 20 dB) to headphone output
Mono differential microphone input (AIN1L/AIN1R, 20 dB) to
headphone output
Mono microphone input (AIN1L, 20 dB) to speaker output
RECORDING
Line input (AIN3L/AIN3R)
Microphone input (AIN1L/AIN1R, 20 dB)
Microphone input (AIN1L/AIN1R, 20 dB) with ALC
Mono microphone input (AIN1L, 20 dB)
Mono microphone input (AIN1L, 20 dB) with ALC
Mono differential microphone input (AIN1L/AIN1R, 20 dB)
Mono differential microphone input (AIN1L/AIN1R, 20 dB) with
ALC
Conditions: 48 kHz/256 f
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and are selected using register 70 (RFM[1:0], PFM[1:0]). All formats require binary 2s-complement,
OPERATION MODE
S
, 16 bits, slave mode, zero data input, no load
2
S, right-justified, left-justified and DSP formats. The data formats are shown in
Table 4. Power Consumption Table
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2
S.
Figure 26
(1.8 V)
1.18
1.81
1.18
1.18
1.18
1.18
1.21
1.20
1.21
1.21
1.86
1.86
2.78
V
2.5
1.2
1.4
2.2
1.4
2.2
0
0
0
0
0
0
DD
POWER SUPPLY CURRENT [mA]
shows a detailed timing diagram.
(3.3 V)
2.51
3.84
2.51
2.52
2.52
2.52
2.58
2.57
2.57
2.58
2.58
3.89
3.91
5.77
2.93
4.74
2.94
4.74
V
5.1
0
0
0
0
0
0
DD
(3.3 V)
0.007
1.79
1.79
2.09
2.18
2.01
2.48
2.89
0.76
0.61
1.18
1.48
1.57
4.58
5.14
5.14
3.96
3.96
V
7.5
1.8
2.5
2.8
3.2
3.6
3.6
CC
SLES193A – AUGUST 2006 – REVISED SEPTEMBER 2006
(3.3 V)
0.002
10.94
10.95
10.96
10.98
10.92
11.6
0.54
0.54
0.75
0.54
0.54
0.54
5.61
0.53
0.53
0.53
0.53
0.13
0.13
0.13
0.13
0.13
0.13
0.13
V
PA
(3.3 V)
0.09
0.09
0.09
0.09
0.09
0.09
0.09
0.09
0.09
0.09
0.09
V
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0
0
0
0
0
0
IO
(V
PD [mW]
TOTAL
DD
0.03
67.7
10.1
11.2
10.8
11.1
12.5
13.4
45.8
27.6
46.8
48.2
49.3
41.2
19.2
21.1
22.7
15.2
16.6
16.3
17.8
4.3
3.8
5.6
6.6
V)
= 1.8
PCM3793
PCM3794
(V
PD [mW]
DD
TOTAL
0.03
80.2
16.3
20.7
17.0
17.3
18.6
19.6
52.1
33.9
53.1
54.5
55.6
41.2
28.7
30.6
36.8
22.3
28.3
23.5
29.5
4.3
3.8
5.6
6.6
= 3.3 V)
S
), left
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