MEC1404 Datasheet, PDF (262/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
16.13.1 ACTIVATE REGISTER
Offset ^30h
Bits
Description
Type
Default
Reset
Event
7:1 Reserved
0 ACTIVATE
1=The 8042 Interface is powered and functional.
0=The 8042 Interface is powered down and inactive.
R
-
-
R/W
0b
VCC_P-
WRGD
and
nSYSR
ST
16.14 Runtime Registers
The registers listed in the Runtime Register Summary table are for a single instance of the Emulated 8042 Interface.
The addresses of each register listed in this table are defined as a relative offset to the host “Base Address” defined in
the Runtime Register Base Address Table.
TABLE 16-7: RUNTIME REGISTER BASE ADDRESS TABLE
Block Instance
Emulated 8042
Interface
Instance Number
0
Host
LPC
EC
Address Space
I/O
32-bit address
space
Base Address
Programmed BAR
000F_0400h
The Base Address indicates where the first register can be accessed in a particular address space for a block instance.
TABLE 16-8: RUNTIME REGISTER SUMMARY
Offset
0h/04h
0h
4h
Register Name (Mnemonic)
HOST_EC Data / CMD Register
EC_HOST Data / AUX Data Register
Keyboard Status Read Register
DS00001956D-page 262
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