MEC1322 datasheet(378/456 Pages) MICROCHIP

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MEC1322

DS00001719D-page 378

 2014 - 2015 Microchip Technology Inc.

35.0 EC SUBSYSTEM REGISTERS

35.1

Introduction

This chapter defines a bank of registers associated with the EC Subsystem.

35.2

References

None

35.3

Interface

This block is designed to be accessed internally by the EC via the register interface.

35.4

Power, Clocks and Reset

This section defines the Power, Clock, and Reset parameters of the block.

35.4.1

POWER DOMAINS

35.4.2

CLOCK INPUTS

This block does not require any special clock inputs. All register accesses are synchronized to the host clock.

35.4.3

RESETS

35.5

Interrupts

This block does not generate any interrupt events.

35.6

Low Power Modes

The EC Subsystem Registers may be put into a low power state by the chip’s Power, Clocks, and Reset (PCR) circuitry.

When this block is commanded to sleep it will still allow read/write access to the registers.

35.7

Description

The EC Subsystem Registers block is a block implemented for aggregating miscellaneous registers required by the

Embedded Controller (EC) Subsystem that are not unique to a block implemented in the EC subsystem.

35.8

EC-Only Registers

Note 35-1

The Base Address indicates where the first register can be accessed in a particular address space

for a block instance.

TABLE 35-1:

POWER SOURCES

Name

Description

VCC1

The EC Subsystem Registers are all implemented on this single power

domain.

TABLE 35-2:

RESET SIGNALS

Name

Description

VCC1_RESET

This reset signal, which is an input to this block, resets all the logic and

registers to their initial default state.

TABLE 35-3:

EC-ONLY REGISTER BASE ADDRESS TABLE

Block Instance

Instance

Number

Host

Address Space

Base Address (

Note 35-1)

EC_REG_BANK

32-bit internal

address space

4000_FC00h

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