STA381BWSTR STMicroelectronics, STA381BWSTR Datasheet - Page 160

• Manufacturer Part Number: STA381BWSTR
• Description: Audio DSPs Sound Terminal 2.1 High EFF Dig Audio
• Manufacturer: STMicroelectronics

Specifications of STA381BWSTR

• Product Category: Audio DSPs
• Rohs: yes
• Operating Supply Voltage: 4.5 V to 25.5 V
• Operating Temperature Range: 0 C to + 150 C
• Mounting Style: SMD/SMT
• Package / Case: VQFN-48
• Snr: 100 dB

Register description: Sound Terminal compatibility
7.28
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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.
Bit
Reserved
5
4
3
2
1
0
D7
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reserved
D6
0
RST
0
1
1
0
0
1
CHPI
INITCNT[3:0]
D5
0
Doc ID 018937 Rev 6
CHPRD
Name
CHPI
D4
1
0: Charge pump phase: 0 deg
1: Charge pump phase: 180 deg
Change charge pump phase at one clock step
0: Charge pump synchronized with PWM frame
0: Charge pump not synchronized with PWM frame
D3
1
INITCNT[3:0]
Description
D2
0
D1
0
STA381BWS
CHPRD
D0
1