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AS3722 bảng dữ liệu(PDF) 74 Page - ams-OSRAM AG

tên linh kiện AS3722
Giải thích chi tiết về linh kiện  Multi-Phase DCDC Controller PMIC
PDF  199 Pages
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nhà sản xuất  AMSOSRAM [ams-OSRAM AG]
Trang chủ  https://ams-osram.com/
Logo AMSOSRAM - ams-OSRAM AG

AS3722 bảng dữ liệu(HTML) 74 Page - ams-OSRAM AG

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ams Datasheet
Page 73
[v1-01] 2015-Sep-07
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AS3722 − Detailed Descriptions- System Functions
Interrupt Generation
Description
The interrupt controller generates an interrupt request for the
host controller as soon as one or more of the bits in the Interrupt
1…3 register are set by pulling low pin XINT. All the interrupt
sources can be enabled in the Interrupt Mask 1…3 register. The
Interrupt 1…3 registers are cleared automatically after the host
controller has read them. To prevent the AS3722device from
losing an interrupt event, the register that is read is captured
before it is transmitted to the host controller via the serial
interface. As soon as the transmission of the captured value is
complete a logical AND operation with the bit wise inverted
captured value is applied to the register to clear all interrupt
bits that have already been transmitted. Clearing the read
interrupt bits takes 2 clock cycles, a read access to the same
register before the clearing process has completed will yield a
value of ‘0’. Note that an interrupt that has been present at the
previous read access will be cleared as well in case it occurs
again before the clearing process has completed.



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