MEC1404 Datasheet, PDF (231/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
TABLE 14-3: EC-ONLY REGISTERS SUMMARY
EC
Offset
109h
EC-Only Registers
Register Name (Mnemonic)
OS2EC Data EC Byte 1 Register
10Ah OS2EC Data EC Byte 2 Register
10Bh OS2EC Data EC Byte 3 Register
104h
105h
106h
107h
100h
EC STATUS Register
EC Byte Control Register
Reserved
Reserved
EC2OS Data EC Byte 0 Register
101h EC2OS Data EC Byte 1 Register
102h EC2OS Data EC Byte 2 Register
103h EC2OS Data EC Byte 3 Register
EC
Access
R
R
R
W
R/W
R
R
W
W
W
W
Host
Offset
Aliased Runtime Register
Register Name (Mnemonic)
01h ACPI OS Data Register Byte 1
Register
02h ACPI OS Data Register Byte 2
Register
03h ACPI OS Data Register Byte 3
Register
04h OS STATUS OS Register
05h OS Byte Control Register
Reserved
Reserved
00h ACPI OS Data Register Byte 0
Register
01h ACPI OS Data Register Byte 1
Register
02h ACPI OS Data Register Byte 2
Register
03h ACPI OS Data Register Byte 3
Register
Host
Access
W
W
W
W
R
R
R
R
R
R
R
14.12 Runtime Registers
The registers listed in the Runtime Register Summary table are for four instances of the ACPI Embedded Controller
Interface (ACPI-ECI). 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.
Note: The Runtime registers may be accessed by the EC but typically the Host will access the Runtime Registers
and the EC will access just the EC-Only registers.
TABLE 14-4: RUNTIME REGISTER BASE ADDRESS TABLE
Block Instance
ACPI-EC
Instance
Number
0
ACPI-EC
1
ACPI-EC
2
Host
LPC
EC
LPC
EC
LPC
EC
Address Space
I/O
32-bit internal
address space
I/O
32-bit internal
address space
I/O
32-bit internal
address space
Base Address
Programmed BAR
000F_0C00h
Programmed BAR
000F_1000h
Programmed BAR
000F_2800h
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DS00001956D-page 231