参数资料
型号: AS3517
厂商: ams
文件页数: 42/94页
文件大小: 0K
描述: IC CODEC AFE AUDIO STER 81-CTBGA
标准包装: 250
类型: 音频编解码器
应用: 便携式音频,电话
安装类型: 表面贴装
封装/外壳: 81-TFBGA
供应商设备封装: 81-CTBGA(9x9)
包装: 托盘
AS3517 V17
Data Sheet, Confidential
2003-2007, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved.
www.austriamicrosystems.com
9.3
SYSTEM Functions
9.3.1
SYSTEM
General
The system block handles the power up, power down and regulator voltage settings of the AFE.
Power Up Conditions
The chip powers up when on of the following condition is true:
High signal on the PWR_UP pin (>80ms, >1V & >1/3 BVDD)
Rising edge on the VBUS pin (USB plug in: >80ms, BVDD>3V, VBUS>4.5V)
Rising edge on the CHGIN pin (charger plug in: >80ms, BVDD>3V, CHGIN>4.0V)
Rising edge on the RTCSUP and consequently on RVDD pin (RTCSUP > 1.35V, BVDD >3V)
RTC wake-up: The auto wake-up timer is internally connected to the Power-up and Hibernation Control block.
To hold the chip in power up mode the PWR_HOLD bit in the SYSTEM register (0x20h) is set.
Power Down Conditions
The chip automatically shuts off if one of the following conditions arises:
Clearing the PWR_HOLD bit in SYSTEM register (0x20h)
I2C watchdog power down(no serial reading for >1s, has to be enabled)
Heartbeat watchdog via pin HBT(no watchdog reset via HBT pin for > 500ms, has to be enabled)
Please note, that when using power-up sequence 16 to 25 no power down is performed but a reset puls (86us typ,
60us min) will be performed.
BVDD drops below the minimum threshold voltage (<2.7V)
LDO or step down converter output voltage drop below a programmable level (has to be enabled)
Junction temperature reaches maximum threshold, set in SUPERVISOR register (0x24h)
High signal on the PWR_UP pin for more than (>5.4s, >1V & >1/3 BVDD).
With setting SD_TIME bit in register 24h the time can be doubled.
Revision 1v3
46
- 93
ams
AG
Technical
content
still
valid
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AS3517-T 功能描述:IC CODEC AFE AUDIO STER 81-CTBGA RoHS:是 类别:集成电路 (IC) >> 线性 - 音频处理 系列:- 其它有关文件:STA321 View All Specifications 标准包装:1 系列:Sound Terminal™ 类型:音频处理器 应用:数字音频 安装类型:表面贴装 封装/外壳:64-LQFP 裸露焊盘 供应商设备封装:64-LQFP EP(10x10) 包装:Digi-Reel® 其它名称:497-11050-6
AS3518 功能描述:IC CODEC AFE AUDIO STER 64-CABGA RoHS:是 类别:集成电路 (IC) >> 线性 - 音频处理 系列:- 其它有关文件:STA321 View All Specifications 标准包装:1 系列:Sound Terminal™ 类型:音频处理器 应用:数字音频 安装类型:表面贴装 封装/外壳:64-LQFP 裸露焊盘 供应商设备封装:64-LQFP EP(10x10) 包装:Digi-Reel® 其它名称:497-11050-6
AS3518-ECTP 功能描述:IC CODEC AFE AUDIO STER 64-CABGA RoHS:是 类别:集成电路 (IC) >> 线性 - 音频处理 系列:- 其它有关文件:STA321 View All Specifications 标准包装:1 系列:Sound Terminal™ 类型:音频处理器 应用:数字音频 安装类型:表面贴装 封装/外壳:64-LQFP 裸露焊盘 供应商设备封装:64-LQFP EP(10x10) 包装:Digi-Reel® 其它名称:497-11050-6
AS3518-ECTS 功能描述:IC AUDIO FRONT END STER 64CTBGA RoHS:是 类别:集成电路 (IC) >> 线性 - 音频处理 系列:- 其它有关文件:STA321 View All Specifications 标准包装:1 系列:Sound Terminal™ 类型:音频处理器 应用:数字音频 安装类型:表面贴装 封装/外壳:64-LQFP 裸露焊盘 供应商设备封装:64-LQFP EP(10x10) 包装:Digi-Reel® 其它名称:497-11050-6
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