WM8311 datasheet(120/302 Pages) WOLFSON

120 / 302 page

WM8311

Pre-Production

PP, May 2012, Rev 3.1

120

For information on how to set the hot and cold temperature limits, see the Applications Information in

Section 30.6.

17.7.8 BATTERY CHARGER INTERRUPTS

The Battery Charger is associated with a number of Interrupt event flags, described in Table 63. Each

of these secondary interrupts triggers a primary Battery Charger Interrupt, CHG_INT (see Section 23).

This can be masked by setting the mask bit(s) as described in Table 63.

If any Battery Charger interrupt event occurs while in the SLEEP power state, then a WAKE transition

request is generated. Note that this behaviour is not affected by any of the interrupt mask bits. See

Section 11.3 for a description of the WM8311 power state transitions.

If any of the Battery Charger Interrupts is asserted when a SLEEP transition is requested, then the

transition will be unsuccessful and the WM8311 will remain in the ON power state.

If battery charging is commenced in the SLEEP power state, the WM8311 will transition to the ON

power state, as a result of the CHG_START_EINT interrupt. Battery charging in the SLEEP power

state is only possible by clearing the CHG_START_EINT interrupt before commanding the transition

into the SLEEP power state.

ADDRESS

BIT

LABEL

DESCRIPTION

R16402

(4012h)

Interrupt Status

CHG_BATT_HOT_EINT

Battery Hot interrupt

(Rising Edge triggered)