MEC1404 Datasheet, PDF (419/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
31.8 Interrupts
This section defines the Interrupt Sources generated from this block.
Source
Description
BCM_INT Busy
BCM_INT Err
BC_INT_N_WK
Interrupt request to the Interrupt Aggregator, generated from the status
event BUSYdefined in the BC-Link Status Register.
Interrupt request to the Interrupt Aggregator, generated from the status
event defined in the BC-Link Status Register.
Wake-up request to the Interrupt Aggregator’s wake-up interface for BC-
Link Master port.
In order to enable BC-Link wakeup interrupts, the pin control registers for
the BC_INT# pin must be programmed to Input, Falling Edge Triggered,
non-inverted polarity detection.
31.9 Low Power Modes
The BC-Link Master Interface automatically enters a low power mode whenever it is not active (that is, whenever the
BUSY bit in the BC-Link Status Register is ‘0’). When the interface is in a low-power mode it will not prevent the chip
from entering a sleep state. When the interface is active it will inhibit the chip sleep state until the interface has re-
entered its low power mode.
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DS00001956D-page 419