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STA350B датащи(PDF) 85 Page - STMicroelectronics

номер детали STA350B
подробное описание детали  2.1-channel high-efficiency digital audio system Sound TerminalR
PDF  94 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA350B датащи(HTML) 85 Page - STMicroelectronics

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DocID018572 Rev 7
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STA350B, STA350BW
Register description
94
8.24.4
Channel PWM enable (CPWMEN) bit (address 0x4B, bit D2)
This bit, when set, activates a mute output in case the volume will reach a value lower than
-76 dBFS.
8.24.5
Power-down delay selector (PNDLSL[2:0]) bits (address 0x4C, bit D4,
D3, D2)
As per Section 8.24.3, the assertion of PWDN activates a counter that, by default, after 13
million clock cycles puts the power bridge in tri-state mode, independently from the fadeout
time. Using these registers it is possible to program this counter according to the following
table:
PNDLSL[2]
PNDLSL[1]
PNDLSL[2]
Fade out time
0
0
0
Default time (13 M clock cycles)
0
0
1
Default time divided by 2
0
1
0
Default time divided by 4
0
1
1
Default time divided by 8
1
0
0
Default time divided by 16
1
0
1
Default time divided by 32
1
1
0
Default time divided by 64
1
1
1
Default time divided by 128



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