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MEC1322 Datasheet(PDF) 356 Page - Microchip Technology

Part # MEC1322
Description  Keyboard and Embedded Controller for Notebook PC
PDF  456 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MEC1322 Datasheet(HTML) 356 Page - Microchip Technology

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MEC1322
DS00001719D-page 356
 2014 - 2015 Microchip Technology Inc.
30.11.2
KSI INPUT REGISTER
30.11.3
KSI STATUS REGISTER
0Bh
KSO11
0Ch
KSO12
0Dh
KSO13
0Eh
KSO14
0Fh
KSO15
10h
KSO16
11h
KSO17
TABLE 30-9:
KEYBOARD SCAN OUT CONTROL SUMMARY
KSO_INVERTt
KSEN
KSO_ALL
KSO_SELECT
Description
X
1
x
x
Keyboard Scan disabled. KSO[17:0]
output buffers disabled.
0
0
0
10001b-00000b
KSO[Drive Selected] driven low. All
others driven high
1
0
0
10001b-00000b
KSO[Drive Selected] driven high. All
others driven low
0
0
0
11111b-10010b
All KSO’s driven high
1
0
0
11111b-10010b
All KSO’s driven low
0
0
1
x
All KSO’s driven high
1
0
1
x
All KSO’s driven low
Offset
08h
Bits
Description
Type
Default
Reset
Event
31:8 Reserved
R
-
-
7:0 KSI
This field returns the current state of the KSI pins.
R
0h
VCC1_R
ESET
Offset
0Ch
Bits
Description
Type
Default
Reset
Event
31:8 Reserved
R
-
-
7:0 KSI_STATUS
Each bit in this field is set on the falling edge of the corresponding
KSI input pin.
A KSI interrupt is generated when its corresponding status bit and
interrupt enable bit are both set. KSI interrupts are logically ORed
together to produce KSC_INT and KSC_INT_WAKE.
Writing a ‘1’ to a bit will clear it. Writing a ‘0’ to a bit has no effect.
R/WC
0h
VCC1_R
ESET
TABLE 30-8:
KSO SELECT DECODE (CONTINUED)
KSO Select [4:0]
KSO Selected



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