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PCM4104IPFBREP датащи(PDF) 30 Page - Texas Instruments

номер детали PCM4104IPFBREP
подробное описание детали  High-Performance, 24-Bit, 216-kHz Sampling, Four-Channel Audio Digital-to-Analog Converter
PDF  43 Pages
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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PCM4104IPFBREP датащи(HTML) 30 Page - Texas Instruments

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Register 4: Attenuation Control Register – Channel 4
Register 5: Function Control Register
DEM[1:0] – Digital De-Emphasis
PHASE – Output Phase
ZDM – Zero Data Mute
MUT[4:1] – Soft Mute
PCM4104-EP
SBAS419 – JUNE 2007
BIT 7 (MSB)
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0 (LSB)
AT47
AT46
AT45
AT44
AT43
AT42
AT41
AT40
This register controls the digital output attenuation for Channel 4.
Default: AT4[7:0] = 255, or 0 dB
Let N = AT4[7:0].
For N = 16 to 255, Attenuation (dB) = 0.5
× (255 – N)
or N = 0 to 15, Attenuation (dB) = Infinite (Muted)
BIT 7 (MSB)
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0 (LSB)
MUT4
MUT3
MUT2
MUT1
ZDM
PHASE
DEM1
DEM0
This register controls various D/A converter functions, including de-emphasis filtering, output phase reversal,
zero data mute, and per-channel soft muting.
De-emphasis is available for Single Rate mode only.
De-emphasis is disabled for Dual and Quad Rate modes.
DEM1
DEM0
De-Emphasis Selection
0
0
De-emphasis disabled (default)
0
1
De-emphasis for fS = 48 kHz
1
0
De-emphasis for fS = 44.1 kHz
1
1
De-emphasis for fS = 32 kHz
PHASE
Output Phase
0
Noninverted (default)
1
Inverted
ZDM
Zero Mute
0
Disabled (default)
1
Enabled
MUTx
D/A Converter Output
0
On (default)
1
Muted
NOTE: x = channel number.
30
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