MEC1404 Datasheet, PDF (458/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
37.9.4 VCI INPUT ENABLE REGISTER
Offset ^0Ch
Bits
DESCRIPTION
31:9 Reserved
8 VCI_OVRD_INPUT_ENABLE
After changing the input enable, firmware should clear any
potential interrupt that may have been triggered by the
input, as changing the enable may cause the internal sta-
tus to change.
1=Enabled. This signal is not gated and toggling the pin will
affect the VCI_OUT pin
0=Not Enabled. This signal is gated low and has no effect
on the VCI_OUT pin
7:2 Reserved
1:0 IE
Input Enables for VCI_IN# signals.
After changing the input enable for a VCI input, firmware
should reset the input latch and clear any potential inter-
rupt that may have been triggered by the input, as chang-
ing the enable may cause the internal status to change.
For each bit in the field:
1=Enabled. The corresponding VCI_IN# input is not gated
and toggling the pin will affect the VCI_OUT pin
0=Not Enabled. the corresponding VCI_IN# input does not
affect the input status registers or the VCI_OUT pin,
even if the input is ‘0.’ Latches are not asserted, even
if the VCI_IN# pin is low, during a VBAT power transi-
tion
TYPE
R
R/W
R
R/W
DEFAULT
-
1h
RESET
EVENT
-
VBAT_PO
R
-
-
3h
VBAT_PO
R
DS00001956D-page 458
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