AS3722 datasheet(74/199 Pages) AMSOSRAM

номер детали	AS3722

подробное описание детали	Multi-Phase DCDC Controller PMIC

PDF	199 Pages

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производитель	AMSOSRAM [ams-OSRAM AG]

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74 / 199 page

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

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.

AS3722 датащи(PDF) 74 Page - ams-OSRAM AG