MEC1404 Datasheet, PDF (220/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
TABLE 13-2: RUNTIME REGISTER BASE ADDRESS TABLE
Block Instance
Mailbox Interface
Instance Number
0
Host
LPC
EC
Address Space
I/O
32-bit address
space
Base Address
Programmed BAR
000F_2400h
The Base Address indicates where the first register can be accessed in a particular address space for a block instance.
TABLE 13-3: RUNTIME REGISTER SUMMARY
Offset
0h
4h
Register Name (Mnemonic)
MBX_INDEX Register
MBX_DATA Register
13.11.1 MBX_INDEX REGISTER
Offset ^0h
Bits
Description
7:0 INDEX
The index into the mailbox registers listed in Table 13-5, "EC-Only
Register Summary".
13.11.2 MBX_DATA REGISTER
Type
R/W
Default
0h
Reset
Event
nSYSR
ST
and
VCC_P-
WRGD=
0
Offset ^04h
Bits
Description
7:0 DATA
Data port used to access the registers listed in Table 13-5, "EC-
Only Register Summary".
Type
R/W
Default
0h
Reset
Event
nSYSR
ST
and
VCC_P-
WRGD=
0
DS00001956D-page 220
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