MEC1404 Datasheet, PDF (119/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
4.9.2.1 SIRQ Configuration Register Format
Offset ^{See Table 4-13, “SIRQ Interrupt Configuration Register Map,” on page 119.}
Bits
Description
7 SELECT
If this bit is 0, the first interrupt signal from the Logical Device is
selected for the SERIRQ vector. If this bit is 1, the second interrupt
signal from the Logical Device is selected.
Note:
The Keyboard Controller is an example of a Logical
Devices that requires a second interrupt signal. Most
Logical Devices require only a single interrupt and
ignore this field as result.
6 DEVICE
This field should always be set to 0 in order to enable a SERIRQ.
5:0 FRAME
These six bits select the Logical Device for on-chip devices as the
source for the interrupt.
Note:
The LPC Logical Device (Logical Device Number 0Ch)
can be used by the Embedded Controller to generate a
Serial Interrupt Request to the Host under software con-
trol.
Type
R/W
R/W
R/W
Default
Reset
Event
Note 4-10 nSIO_
RESET
Note 4-10 nSIO_
RESET
Note 4-10 nSIO_
RESET
Note 4-10 See Table 4-13, “SIRQ Interrupt Configuration Register Map,” on page 119.
4.9.2.2 SIRQ Configuration Registers
TABLE 4-13: SIRQ INTERRUPT CONFIGURATION REGISTER MAP
Offset
40h
41h
42h
43h
44h
45h
46h
47h
48h
49h
4Ah
4Bh
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
IRQ0
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ8
IRQ9
IRQ10
IRQ11
Configuration Register Name
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DS00001956D-page 119