MEC1322 Datasheet, PDF (94/456 Pages) Microchip Technology – Keyboard and Embedded Controller for Notebook PC

MEC1322
TABLE 5-19:
Offset
00h
01h
RUNTIME REGISTER SUMMARY
Register Name
INDEX Register
DATA Register
Note: The LPC Runtime Register space has been used to implement the INDEX and DATA registers in the Con-
figuration Port. In CONFIG_MODE, the Configuration Port is used to access the Configuration Registers.
5.10.1 INDEX REGISTER
Offset ^00h
Bits
Description
Type
7:0 INDEX
R/W
The INDEX register, which is part of the Configuration Port, is used
as a pointer to a Configuration Register Address.
Note: For a description of accessing the Configuration Port see
Section 5.8.3, "Configuration Port," on page 83.
5.10.2 DATA REGISTER
Offset ^01h
Bits
Description
Type
7:0 DATA
R/W
The DATA register, which is part of the Configuration Port, is used to
read or write data to the register currently being selected by the
INDEX Register.
Note: For a description of accessing the Configuration Port see
Section 5.8.3, "Configuration Port," on page 83
5.11 EC-Only Registers
Default
0h
Reset
Event
VCC1_R
ESET
Default
0h
Reset
Event
VCC1_R
ESET
Note: EC-Only registers are not accessible by the LPC interface.
The registers listed in Table 5-21, "EC-Only Register Summary" are for a single instance of the LPC Interface. Their
addresses are defined as a relative offset to the host base address defined in Table 5-20.
The following table defines the fixed host base address for each LPC Interface instance.
TABLE 5-20: EC-ONLY REGISTER ADDRESS RANGE TABLE
INSTANCE NAME
LPC Interface
INSTANCE
NUMBER
0
HOST
EC
ADDRESS
SPACE
32-bit internal
address space
BEGIN ADDRESS
400F_3100h
The Begin Address indicates where the first register can be accessed in a particular address space for a block instance.
DS00001719D-page 94
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