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CS43L22 датащи(PDF) 43 Page - Cirrus Logic

номер детали CS43L22
подробное описание детали  Low Power, Stereo DAC w/Headphone & Speaker Amps
PDF  68 Pages
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производитель  CIRRUS [Cirrus Logic]
домашняя страница  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS43L22 датащи(HTML) 43 Page - Cirrus Logic

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DS792F1
43
CS43L22
Confidential Draft
10/7/08
7.7
Passthrough x Select: PassA (Address 08h), PassB (Address 09h)
7.7.1
Passthrough Input Channel Mapping
Selects one or sums/mixes the analog input signal into the passthrough Amplifier. Each bit of the
PASSx_SEL[4:1] word corresponds to individual channels (i.e. PASSx_SEL1 selects AIN1x,
PASSx_SEL2 selects AIN2x, etc.).
7.8
Analog ZC and SR Settings (Address 0Ah)
7.8.1
Ch. x Analog Soft Ramp
Configures an incremental volume ramp from the current level to the new level at the specified rate.
7.8.2
Ch. x Analog Zero Cross
Configures when the signal level changes occur for the analog volume controls.
Note:
If the signal does not encounter a zero crossing, the requested volume change will occur after a
timeout period of 1024 sample periods (approximately 10.7 ms at 48 kHz sample rate).
7.9
Passthrough Gang Control (Address 0Ch)
7.9.1
Passthrough Channel B=A gang Control
Configures independent or ganged control of the passthrough channel settings. Mute is not affected.
76
5
4
3
2
1
0
Reserved
Reserved
Reserved
Reserved
PASSASEL4
PASSASEL3
PASSASEL2
PASSASEL1
PASSxSEL[4:1]
Selected Input to Passthrough Channelx
00000
No inputs selected
00001
AIN1x
00010
AIN2x
00100
AIN3x
01000
AIN4x
Application:
“Analog Passthrough” on page 25
Note: Table does not show all possible combinations.
7
6
5
432
10
Reserved
Reserved
Reserved
Reserved
ANLGSFTB
ANLGZCB
ANLGSFTA
ANLGZCA
ANLGSFTx
Volume Changes
Affected Analog Volume Controls
0
Do not occur with a soft ramp
PASSxVOL[7:0] (“Passthrough x Volume” on page 47)
1
Occur with a soft ramp
Ramp Rate:
1/2 dB every 16 LRCK cycles
ANLGZCx
Volume Changes
Affected Analog Volume Controls
0
Do not occur on a zero cross-
ing
PASSxVOL[7:0] (“Passthrough x Volume” on page 47)
1
Occur on a zero crossing
7
6
5
432
10
PASSB=A
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
PASSB=A
Single Volume Control
0
Disabled
1
Enabled



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