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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS3517H-ECTP датащи(PDF) 52 Page - ams AG |
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AS3517H-ECTP датащи(HTML) 52 Page - ams AG |
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52 / 94 page  AS3517 V17 Data Sheet, Confidential © 2003-2007, austriamicrosystems AG, 8141 Unterpremstaetten, Austria-Europe. All Rights Reserved. www.austriamicrosystems.com 9.3.4 Interrupt Generation 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 get configured to be PUSH/PULL or OPEN_DRAIN and ACTIVE_HIGH or ACTIVE LOW with 2 bits in IRQ_ENRD_4 register (27h). Default state is open drain and active_low. 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. STATUS CHANGE The IRQ gets active when the source-state changes. The change bit and the status can be read to notice which interrupt was the source. The IRQ stays active until the corresponding interrupt register gets read. De-bouncer There is a de-bounce function implemented for USB and CHARGER. Since these 2 signals can be unstable for the phase of plug-in or unplug, a de-bounce time of 512ms/256ms/128ms can be selected by 2 bits in the IRQ_ENRD_4 register (27h). Interrupt Sources 18 IRQ events will activate the XIRQ pin: • headphone connected • Microphone 1 connected • Microphone 2 connected • Microphone 1 remote control • Microphone 2 remote control • Voice activation threshold reached • RTC sec/min elapsed • 10bit ADC end of conversion • I²S changed • USB changed • Charger changed • End of charge (at 10% of programmed current ) • Battery temperature high (at 42°C and 45°C with 100k Ω NTC) • RVDD low (e.g. after battery was changed) • Battery low (Brown-out voltage reached) • wake-up from hibernation • power-up key (pin PWRUP) pressed • power rail monitor: PVDD1, PVDD2, CVDD1, CVDD2 Revision 1v3 51 - 93 |
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