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PCM3793RHB Folha de dados(PDF) 21 Page - Texas Instruments

Nome de Peças PCM3793RHB
Descrição Electrónicos  Low-Power Stereo Audio CODEC
PDF  68 Pages
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
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PCM3793RHB Folha de dados(HTML) 21 Page - Texas Instruments

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Audio Serial Interface
Audio Data Formats and Timing
PCM3793
PCM3794
SLES193C – AUGUST 2006 – REVISED FEBRUARY 2007
Table 5. Power Consumption Table
OPERATION MODE
POWER SUPPLY CURRENT [mA]
PD [mW]
PD [mW]
VDD
VDD
VCC
VPA
VIO
TOTAL
TOTAL
(1.8 V)
(3.3 V)
(3.3 V)
(3.3 V)
(3.3 V)
(VDD = 1.8
(VDD = 3.3 V)
V)
All Power Down
0
0
0.007
0.002
0
0.03
0.03
All Active
2.5
5.1
7.5
11.6
0.1
67.7
80.2
PLAYBACK WITH DIGITAL INPUT
Line output and headphone output
1.18
2.51
1.79
0.54
0.09
10.1
16.3
Headphone output with sound effect
1.81
3.84
1.79
0.54
0.09
11.2
20.7
Capless headphone output
1.18
2.51
1.8
0.75
0.09
10.8
17.0
Headphone output with line input (AIN2L/AIN2R)
1.18
2.52
2.09
0.54
0.09
11.1
17.3
Headphone output with mono microphone input (AIN1L, 20 dB)
1.18
2.52
2.5
0.54
0.09
12.5
18.6
Headphone output with mono differential microphone input
1.18
2.52
2.8
0.54
0.09
13.4
19.6
(AIN1L/AIN1R, 20 dB)
Stereo speaker output
1.21
2.58
2.18
10.94
0.09
45.8
52.1
Mono speaker output
1.20
2.57
2.01
5.61
0.09
27.6
33.9
Speaker output with line input (AIN2L/AIN2R)
1.21
2.57
2.48
10.95
0.09
46.8
53.1
Speaker output with mono microphone input (AIN1L, 20 dB)
1.21
2.58
2.89
10.96
0.09
48.2
54.5
Speaker output with mono differential microphone input
1.2
2.58
3.2
10.98
0.09
49.3
55.6
(AIN1L/AIN1R, 20 dB)
PLAYBACK WITHOUT DIGITAL INPUT
Line input (AIN2L/AIN2R) to headphone output
0
0
0.76
0.53
0
4.3
4.3
Mono line input (AIN2L) to headphone output
0
0
0.61
0.53
0
3.8
3.8
Mono microphone Input (AIN1L, 20 dB) to headphone output
0
0
1.18
0.53
0
5.6
5.6
Mono differential microphone input (AIN1L/AIN1R, 20 dB) to
0
0
1.48
0.53
0
6.6
6.6
headphone output
Mono microphone input (AIN1L, 20 dB) to speaker output
0
0
1.57
10.92
0
41.2
41.2
RECORDING
Line input (AIN3L/AIN3R)
1.86
3.89
4.58
0.13
0.1
19.2
28.7
Microphone input (AIN1L/AIN1R, 20 dB)
1.86
3.91
5.14
0.13
0.1
21.1
30.6
Microphone input (AIN1L/AIN1R, 20 dB) with ALC
2.78
5.77
5.14
0.13
0.1
22.7
36.8
Mono microphone input (AIN1L, 20 dB)
1.4
2.93
3.6
0.13
0.1
15.2
22.3
Mono microphone input (AIN1L, 20 dB) with ALC
2.2
4.74
3.6
0.13
0.1
16.6
28.3
Mono differential microphone input (AIN1L/AIN1R, 20 dB)
1.4
2.94
3.96
0.13
0.1
16.3
23.5
Mono differential microphone input (AIN1L/AIN1R, 20 dB) with
2.2
4.74
3.96
0.13
0.1
17.8
29.5
ALC
Conditions: 48 kHz/256 fS, 16 bits, slave mode, zero data input, no load
The audio serial interface for the PCM3793/94 comprises LRCK, BCK, DIN, and DOUT. Sampling rate (fS), left
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.
The PCM3793/94 supports I2S, right-justified, left-justified and DSP formats. The data formats are shown in
Figure 28 and are selected using register 70 (RFM[1:0], PFM[1:0]). All formats require binary 2s-complement,
MSB-first audio data. The default format is I2S. Figure 26 shows a detailed timing diagram.
21
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PCM3793 is Not Recommended for New Designs



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