MEC1404 Datasheet, PDF (414/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
Offset ^04h
Bits
Description
Type
5 KSO_ALL
R/W
0 = When key scan is enabled, KSO output controlled by the
KSO_SELECT field.
1 = All KSO pins are active and the KSO_SELECT field is a don’t
care.
Note:
The active state is determined by the KSO_INVERT bit
as is shown in Table 30-5, "Keyboard Scan Out Control
Summary"
4:0 KSO_SELECT
R/W
This field determines which KSO line(s) are active.
0_0000b = KSO00 Selected
0_0001b = KSO01 Selected
.
.
.
1_0001b = KSO17 Selected
1_0010b - 1_1111b = All KSO pins selected
Note:
Note:
The full decode table is illustrated in Table 30-4, "KSO
Select Decode"
The active state is determined by the KSO_INVERT bit
as is shown in Table 30-5, "Keyboard Scan Out Control
Summary"
Default
0b
Reset
Event
nSYSR
ST
0h
nSYSR
ST
TABLE 30-4: KSO SELECT DECODE
KSO Select [4:0]
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
KSO Selected
KSO00
KSO01
KSO02
KSO03
KSO04
KSO05
KSO06
KSO07
KSO08
KSO09
KSO10
DS00001956D-page 414
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