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STA326 数据表(PDF) 20 Page - STMicroelectronics

部件名 STA326
功能描述  2.1 HIGH EFFICIENCY DIGITAL AUDIO SYSTEM
PDF  43 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STA326 数据表(HTML) 20 Page - STMicroelectronics

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7.7.1
Output Configuration Selection
Table 15. Output Configuration Selections
7.7.2
Invalid Input Detect Mute Enable
Setting the IDE bit enables this function, which looks at the input I2S data and clocking and will automati-
cally mute all outputs if the signals are perceived as invalid.
7.7.3
Binary Clock Loss Detection Enable
Detects loss of input MCLK in binary mode and will output 50% duty cycle to prevent audible artifacts when
input clocking is lost.
7.7.4
Auto-EAPD on Clock Loss Enable
When ECLE is active, it issues a power device power down signal (EAPD) on clock loss detection.
7.7.5
Powerdown
If the powerdown bit is set low, a powerdown sequence is initiated resulting in a soft mute of all the chan-
nels and PWM outputs are damped.
BIT
R/W
RST
NAME
DESCRIPTION
1…0
R/W
00
OCFG
(1…0)
Output Configuration Selection
00 – 2-channel (Full-bridge) Power, 1-channel DDX is default
OCFG (1...0)
Output Power Configuration
00
2 Channel (Full-Bridge) Power, 1 Channel DDX:
1A/1B
◊ 1A/1B
2A/2B
◊ 2A/2B
01
2(Half-Bridge).1(Full-Bridge) On-Board Power:
1A
◊ 1A
Binary
2A
◊ 1B
Binary
3A/3B
◊ 2A/2B Binary
10
Reserved
11
1 Channel Mono-Parallel:
3A
◊ 1A/1B
3B
◊ 2A/2B
BIT
R/W
RST
NAME
DESCRIPTION
2
R/W
1
IDE
Invalid Input Detect Auto-Mute Enable:
0 – Disabled
1 – Enabled
BIT
R/W
RST
NAME
DESCRIPTION
5
R/W
1
BCLE
Binary Output Mode Clock Loss Detection Enable
0 – Disabled
1 – Enabled
BIT
R/W
RST
NAME
DESCRIPTION
7
R/W
0
ECLE
Auto EAPD on Clock Loss
0 – Disabled
1 – Enabled
BIT
R/W
RST
NAME
DESCRIPTION
6
R/W
1
PWDN
Software Power Down:
0 – Powerdown mode operation (auto soft-mute enabled)
1 – Normal Operation



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