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AS3525 Datasheet(PDF) 156 Page - ams AG

Part # AS3525
Description  Advanced Audio Processor System
PDF  194 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3525 Datasheet(HTML) 156 Page - ams AG

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AS3525-A/-B C22O22
Data Sheet, Confidential
© 2005-2009, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved.
www.austriamicrosystems.com
Revision 1.13
156
- 194
7.4.17
Supervisor
7.4.17.1 General
This supervisor function can be used for automatic detection of BVDD brown out or junction over-temperature condition.
7.4.17.2 BVDD Supervision
The supervision level can be set in 8 steps @ 60mV from 2.74 to 3.16V. If the level is reached an interrupt can be generated. If BVDD reaches 2.6V
the AFE shuts down automatically.
7.4.17.3 Junction Temperature Supervision
The temperature supervision level can also be set by 5 bits (120 to –15oC). If the temperature reaches this level, an interrupt can be generated. The
over-temperature shutdown level is always 20oC higher. If the IRQ level is set to 120oC the shutdown is disabled.
7.4.17.4 Register Description
Table 143 Supervisor Related Register
Name
Base
Offset
Description
IRQ_ENRD_0
I2C audio master
0x25
Enable/disable battery brown out interrupt
IRQ_ENRD_1
I2C audio master
0x26
Enable/disable junction temperature interrupt
Table 144 Supervisor Register
Name
Base
Default
Supervisor
I2C audio master
0x00
Supervisor Register
Offset: 0x24
This register is reset at a DVDD-POR.
Bit
Bit Name
Default
Access
Bit Description
7:5
BVDD_Sup<2:0>
000
R/W
supervision of BVDD brown out
V_BrownOut=2.74+x*60mV
000: 2.74V
001: 2.80V
…
110: 3.10V
111: 3.16V
4:0
JT_Sup<4:0>
00000
R/W
junction temperature supervision:
Temp_ShutDown=140-x*5
°C
Temp_IRQ=120-x*5
°C



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