MEC1322 Datasheet, PDF (133/456 Pages) Microchip Technology – Keyboard and Embedded Controller for Notebook PC

MEC1322
10.11 Register Aliasing between Runtime and EC-Only Registers
Table 10-6, "Runtime Register Aliasing into EC-Only Registers" indicates the aliasing from Runtime registers to EC-Only
registers. The “Host/EC Access” column distinguishes the aliasing based on access type. See individual register
descriptions for more details.
TABLE 10-6: RUNTIME REGISTER ALIASING INTO EC-ONLY REGISTERS
Host
Offset
Runtime Register
Register Name (Mnemonic)
Host
EC
Access Offset
Aliased EC-Only Register
Register Name (Mnemonic)
00h ACPI OS Data Register Byte 0
W
108h OS2EC Data EC Byte 0 Register
Register
00h ACPI OS Data Register Byte 0
Register
R
100h EC2OS Data EC Byte 0 Register
01h ACPI OS Data Register Byte 1
W
109h OS2EC Data EC Byte 1 Register
Register
01h ACPI OS Data Register Byte 1
Register
R
101h EC2OS Data EC Byte 1 Register
02h ACPI OS Data Register Byte 2
Register
W
10Ah OS2EC Data EC Byte 2 Register
02h ACPI OS Data Register Byte 2
Register
R
102h EC2OS Data EC Byte 2 Register
03h ACPI OS Data Register Byte 3
Register
W
10Bh OS2EC Data EC Byte 3 Register
03h ACPI OS Data Register Byte 3
Register
R
103h EC2OS Data EC Byte 3 Register
04h ACPI OS COMMAND Register
W
108h OS2EC Data EC Byte 0 Register
04h OS STATUS OS Register
R
104h EC STATUS Register
05h OS Byte Control Register
R
105h EC Byte Control Register
06h Reserved
106h Reserved
07h Reserved
107h Reserved
EC
Access
R
W
R
W
R
W
R
W
R
W
R/W
Table 10-7, "EC-Only Registers Summary" indicates the aliasing from EC-Only to Runtime registers. The “Host/EC
Access” column distinguishes the aliasing based on access type. See individual register descriptions for more details.
TABLE 10-7: EC-ONLY REGISTERS SUMMARY
EC
Offset
EC-Only Registers
Register Name (Mnemonic)
EC
Access
108h OS2EC Data EC Byte 0 Register
R
108h OS2EC Data EC Byte 0 Register
R
109h OS2EC Data EC Byte 1 Register
R
10Ah OS2EC Data EC Byte 2 Register
R
10Bh OS2EC Data EC Byte 3 Register
R
104h EC STATUS Register
W
105h EC Byte Control Register
R/W
106h Reserved
R
107h Reserved
R
100h EC2OS Data EC Byte 0 Register
W
Host
Offset
00h
04h
01h
02h
03h
04h
05h
00h
Aliased Runtime Register
Register Name (Mnemonic)
ACPI OS Data Register Byte 0
Register
ACPI OS COMMAND Register
ACPI OS Data Register Byte 1
Register
ACPI OS Data Register Byte 2
Register
ACPI OS Data Register Byte 3
Register
OS STATUS OS Register
OS Byte Control Register
Reserved
Reserved
ACPI OS Data Register Byte 0
Register
Host
Access
W
W
W
W
W
W
R
R
R
R
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DS00001719D-page 133