sta381bw STMicroelectronics, sta381bw Datasheet - Page 65

• Manufacturer Part Number: sta381bw
• Description: Sound Terminal 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

STA381BW
6.17.3
6.17.4
6.18
6.18.1
6.18.2
PWM speed mode
Table 46.
Zero-crossing enable
Table 47.
The ZCE bit enables zero-crossing adjustment. When volume is adjusted on digital zero-
crossing, no clicks are audible
Configuration register F (addr 0x16)
Invalid input detect mute enable
Table 48.
Setting the IDE bit enables this function, which looks at the input I
mutes if the signals are perceived as invalid.
Binary output mode clock loss detection
Table 49.
Detects loss of input MCLK in binary mode and will output 50% duty cycle.
Bit
Bit
Bit
Bit
4
6
2
3
EAPD
D7
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PWM speed mode
Zero-crossing enable
Invalid input detect mute enable
Binary output mode clock loss detection
PWDN
D6
RST
RST
1
0
0
RST
RST
1
1
Name
ECLE
PWMS
ZCE
D5
Name
0
Doc ID 018835 Rev 2
Name
Name
BCLE
IDE
‘1’: Volume adjustment only occurs at digital zero-crossing
‘0’: Volume adjustment occur immediately
LDTE
D4
1
0: Normal speed (384 kHz) all channels
1: Odd speed (341.3 kHz) all channels
Setting of 1 enables the automatic invalid input
detect mute
Binary output mode clock loss detection enable
BCLE
D3
1
Register description: New Map
Description
Description
IDE
Description
Description
D2
1
2
S data and automatically
Reserved
D1
Reserved
D0
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