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STA381BWS Fiches technique(PDF) 160 Page - STMicroelectronics

No de pièce STA381BWS
Description  Sound Terminal® 2.1-channel high-efficiency digital audio system
PDF  171 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA381BWS Fiches technique(HTML) 160 Page - STMicroelectronics

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Register description: Sound Terminal compatibility
STA381BWS
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Doc ID 018937 Rev 6
7.28
Charge pump synchronization (address 0x5F)
Table 180.
Charge pump sync configuration bits
The charge pump can be synchronized with the PWM frame in order to minimize the
crosstalk between the charge pump and the PWM waveform.
This functionality cannot be activated when the PWMS bit (address 0x15 bit D4) is set to 1.
D7
D6
D5
D4
D3
D2
D1
D0
Reserved
Reserved
CHPI
INITCNT[3:0]
CHPRD
00
01
10
0
1
Bit
R/W
RST
Name
Description
5
R/W
0
CHPI
0: Charge pump phase: 0 deg
1: Charge pump phase: 180 deg
4R/W
1
INITCNT[3:0]
Change charge pump phase at one clock step
3R/W
1
2R/W
0
1R/W
0
0
R/W
1
CHPRD
0: Charge pump synchronized with PWM frame
0: Charge pump not synchronized with PWM frame



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