MEC1322 datasheet(94/456 Pages) MICROCHIP

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MEC1322

DS00001719D-page 94

 2014 - 2015 Microchip Technology Inc.

5.10.1

INDEX REGISTER

5.10.2

DATA REGISTER

5.11

EC-Only Registers

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.

The Begin Address indicates where the first register can be accessed in a particular address space for a block instance.

TABLE 5-19:

RUNTIME REGISTER SUMMARY

Offset

00h

INDEX Register

01h

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.

Offset

00h

Bits

Description

Type

Default

Reset

Event

7:0 INDEX

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.

R/W

VCC1_R

ESET

Offset

01h

Bits

Description

Type

Default

Reset

Event

7:0 DATA

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

R/W

VCC1_R

ESET

Note:

EC-Only registers are not accessible by the LPC interface.

TABLE 5-20:

EC-ONLY REGISTER ADDRESS RANGE TABLE

INSTANCE NAME

INSTANCE

NUMBER

HOST

ADDRESS

SPACE

BEGIN ADDRESS

LPC Interface

32-bit internal

address space

400F_3100h

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