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MEC1322 Datasheet(PDF) 158 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) 158 Page - Microchip Technology

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MEC1322
DS00001719D-page 158
 2014 - 2015 Microchip Technology Inc.
11.15.5
EC AUX DATA REGISTER
11.15.6
PCOBF REGISTER
1 SAEN
Software-assist enable.
1=This bit allows control of the GATEA20 signal via firmware
0=GATEA20 corresponds to either the last Host-initiated control of
GATEA20 or the firmware write to the Keyboard Control Register
or the EC AUX Data Register.
R/W
0h
VCC1_R
ESET
0 UD3
User-defined data. Readable and writable by the EC when written by
the EC at its EC-only alias.
R/W
0h
VCC1_R
ESET
Offset
0Ch
Bits
Description
Type
Default
Reset
Event
7:0 EC_AUX_DATA
This 8-bit register is write-only. When written, the C/D in the Key-
board Status Read Register is cleared to ‘0’, signifying data, and the
IBF in the same register is set to ‘1’.
When the Runtime Register at offset 0h is read by the Host, it func-
tions as the EC_HOST Data / AUX Data Register.
W0h
VCC1_R
ESET
Offset
14h
Bits
Description
Type
Default
Reset
Event
7:1 Reserved
R
-
-
0PCOBF
For a description of this bit, see Section 11.10.1, "PCOBF Descrip-
tion".
R/W
0h
VCC1_R
ESET
Offset
08h
Bits
Description
Type
Default
Reset
Event



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