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LM49370RLX-NOPB Fiches technique(PDF) 38 Page - Texas Instruments

No de pièce LM49370RLX-NOPB
Description  Boomer짰 Audio Power Amplifier Series Audio Sub-System with an Ultra Low EMI, Spread Spectrum, Class D Loudspeaker Amplifier, a Dual-Mode Stereo Headphone Amplifier, and a Dedicated PCM Interface for Bluetooth Transceivers
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Site Internet  http://www.ti.com
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LM49370RLX-NOPB Fiches technique(HTML) 38 Page - Texas Instruments

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I2S
CLKGEN
ADC_CLOCK
DAC_CLOCK
I2S_CLK_IN
I2S
WSGEN
I2S_WS_IN
I2S_WS
I2S_WS_OUT
I2S_CLK
I2S_CLK_OUT
LM49370
SNAS356D – FEBRUARY 2007 – REVISED MARCH 2012
www.ti.com
I2S PORT MODE CONFIGURATION REGISTER
This register is used to control the audio data interfaces.
Table 33. I2S Mode (0x1Ah)
Bit
Field
Description
s
0
I2S_OUT_ENB
If set, the I2S output bus is enabled. If cleared, the I2S output will be tristate and all RX clocks will be
gated.
1
I2S_IN_ENB
If set, the I2S input is enabled. If this bit cleared, the I2S input is ignored and all TX clocks gated.
2
I2S_MODE
This programs the format of the I2S interface.
Definition
0
Normal
1
Left Justified
3
I2S_STEREO_REVERSE
If set, the left and right channels are reversed.
Operation
0
Normal
1
Reversed
4
I2S_WS_MS
If set, I2S_WS generation is enabled and is Master. If cleared, I2S_WS acts as slave.
6:5
I2S_WS_GEN_MODE
This programs the I2S word length.
Bits/Word
002
16
012
25
102
32
112
7
I2S_WORD_ORDER
This bit alters the RX phasing of left and right channels. If this bit is cleared: right then left. If this bit is
set: left then right.
Figure 18. I2S Audio Port CLOCK/SYNC Options
I2S PORT CLOCK CONFIGURATION REGISTER
This register is used to control the audio data interfaces.
Table 34. I2S Clock (0x1Bh)
Bit
Field
Description
s
0
I2S_CLOCK_MS
If set, then I2S clock generation is enabled and is Master. If this bit is cleared, then the I2S clock is driven
by the device slave.
1
I2S_CLOCK_SOURCE
This selects the source of the clock to be used by the I2S clock generator.
I2S_CLOCK_SOURCE
Clock is source from
0
DAC (from R divider)
1
ADC (from Q divider)
38
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