MEC1632 datasheet(183/636 Pages) MICROCHIP

183 / 636 page

 2012-2018 Microchip Technology Inc.

DS00001592B-page 183

MEC1632

9.10.7

BYTE CONTROL OS-REGISTER

BYTE_CNL_OSREG

; ALIAS=BYTE_CNL_ECREG

This register is aliased to the Byte Control EC-Register on page 189. No behavioral differences occur due to address

aliasing.

APPLICATION NOTE:

The ACPI_OS access Base Address Register (BAR) should be configured to match the

access width selected by the Four Byte Access bit in the Byte Control OS-Register. This BAR

in not described in this chapter.

9.11

EC-Only Registers

The registers listed in the EC-Only Registers Register Summary table are for a single instance 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 EC-Only Registers Address Range Table.

Offset

Bits

Description

Type

Default

Reset

Event

7:1

RESERVED

RES

Four Byte Access

(4BYTE_ACCESS_EN_OS;ALIASED)

When this bit is set to ‘1’, the ACPI Embedded Controller Interface

(ACPI-ECI) accesses four bytes through the ACPI-OS DATA

BYTES[3:0].

When this bit is cleared to ‘0’, the ACPI Embedded Controller

Interface (ACPI-ECI) accesses one byte through the ACPI OS Data

Section 9.8, "Description," on page 172.

Note:

This bit effects the behavior of the IBF & OBF bits in the

STATUS OS-Register.

Note:

See ACPI-OS DATA BYTES[3:0] on page 177, OS2EC

DATA BYTES[3:0] on page 184, and EC2OS DATA

BYTES[3:0] on page 186 for detailed description of

access rules.

R0b

nSYS_R

TABLE 9-10:

EC-Only Registers ADDRESS RANGE TABLE

Block Instance

Instance

Number

Host

Address Space

Base Address

ACPI-EC

Note 9-1

24-bit internal

address space

ACPI EC Channel 0 LDN 2h,

Base address FF_0800h

ACPI-EC

Note 9-1

24-bit internal

address space

ACPI EC Channel 1 LDN 3h,

Base address FF_0C00h

ACPI-EC

Note 9-1

24-bit internal

address space

ACPI EC Channel 2 LDN 4h,

Base address FF_1000h

ACPI-EC

Note 9-1

24-bit internal

address space

ACPI EC Channel 3 LDN 5h,

Base address FF_1400h

MEC1632 Datasheet(PDF) 183 Page - Microchip Technology

MEC1632 Datasheet(HTML) 183 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL