參數(shù)資料
型號(hào)： AS3543-ECTP
廠商： ams
文件頁(yè)數(shù)： 42/92頁(yè)
文件大小： 0K
描述： IC CODEC AUDIO FRONT END 68CTBGA
標(biāo)準(zhǔn)包裝： 4,000
類型： 音頻編解碼器
應(yīng)用： 便攜式音頻，電話
安裝類型： 表面貼裝
封裝/外殼： 68-TFBGA
供應(yīng)商設(shè)備封裝： 68-CTBGA（6x6）
包裝： 帶卷 (TR)
www.austriamicrosystems.com
Revision 1.11
46 - 91
AS3543 3v2
Data Sheet - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s
10.3
Supervisor
10.3.1 General
This supervisor function can be used for automatic detection of BVDD brown out or junction over-temperature condi-
tion.
10.3.2 BVDD Supervision
The BVDD supervision interrupt level is set to 175mV above regulator output AVDD27. When BVDD reaches this level
an interrupt can be generated.
If AVDD27 reaches the “programmed level of AVDD27” -10% for more than 680us, the AFE shuts down automatically,
if the shutdown is not disabled.
10.3.3 Junction Temperature Supervision
The temperature supervision level can also be set by 5 bits (120 to –15C). If the temperature reaches this level, an
interrupt can be generated. The over-temperature shutdown level is always 20C higher.
10.3.4 Power Rail Monitoring
The 4 main regulators as well as the DCDC15 booster and the system supply AVDD27 have an extra monitor which
observes the output voltage of the regulators. This power rail monitors are independent from the 10bit ADC. To activate
these please see related registers. For a shut down the voltage of the regulator has to be 10% or more below the pro-
grammed value for more than 680us.
10.3.5 Register Description
10.4
Interrupt Generation
10.4.1 General
All interrupt sources can get enabled or disabled by corresponding bits in the 5 IRQ-bytes. By default no interrupt
source is enabled.
The XIRQ output can be configured to operate in push/pull (2 different driver strengths), open-drain mode or to be tri-
state. The signal polarity can be defined as active-low or active-high. Default state is open-drain active-low. For a more
detailed description of the GPIO functionality of this pin please refer to chapter GPIO Pins on page 50.
10.4.2 IRQ Source Interpretation
There are 3 different modules to process interrupt sources:
LEVEL
The IRQ output is kept active as long as the interrupt source is present and this IRQ-Bit is enabled
EDGE
The IRQ gets active with a high going edge of this source. The IRQ stays active until the corresponding IRQ-Register
gets read.
Table 34. Supervisor Related Register
Name
Base
Offset
Description
2-wire serial
21h
Low battery shutdown disable and junction temperature
supervision threshold levels
2-wire serial
23h
Enable/disable PVDD/CVDD monitoring interrupt and shutdown
2-wire serial
24h
Enable/disable PVDD/CVDD monitoring interrupt and shutdown
2-wire serial
25h
Enable/disable battery brown out interrupt
2-wire serial
26h
Enable/disable junction temperature interrupt
2-wire serial
27h
Enable/disable AVDD27 and DCDC15 monitoring interrupt
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