MEC1632 datasheet(91/636 Pages) MICROCHIP

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DS00001592B-page 91

MEC1632

6.10.2

HOST BUS ERROR REGISTER

LPC_AHB_ERR

This bit can be used to generate an EC interrupt. It is set whenever either a BAR conflict or an AHB bus error occurs as

a result of an LPC access. Once set, it remains set until cleared by being written with a 1.

EN_AHB_ERR

When this bit is 0, only a BAR conflict, which occurs when two BARs match the same LPC I/O address, will cause

LPC_AHB_ERR to be set. When this bit is 1, AHB bus errors will also cause LPC_AHB_ERR to be set.

BAR_CONFLICT

This bit is set to 1 whenever a BAR conflict occurs on an LPC address. A Bar conflict occurs when more than one BAR

matches the address during of an LPC cycle access, and can occur either in LPC I/O addresses or in LPC memory

addresses. Once this bit is set, it remains set until cleared by being written with a 1.

RUNTIME_ERR

This bit is set to 1 whenever En_AHB_ERR is 1 and an LPC I/O access causes an AHB bus error. This error will only

occur if a BAR is misconfigured. Once set, it remains set until cleared by being written with a 1.

CONFIG_ERR

This bit is set to 1 whenever En_AHB_ERR is 1 and an LPC Configuration access causes an AHB bus error. Once set,

it remains set until cleared by being written with a 1.

TABLE 6-9:

HOST BUS ERROR REGISTER

HOST OFFSET

N/A

N/A HOST SIZE

EC ADDRESS

FF_3108h

32-bit EC SIZE

POWER

VTR

0000_0000h nSYS_RST DEFAULT

BUS

LPC SPB

BYTE3 BIT

D31

D30

D29

D28

D27

D26

D25

D24

HOST TYPE

EC TYPE

BIT NAME

ErrorAddress[23:16]

BYTE2 BIT

D23

D22

D21

D20

D19

D18

D17

D16

HOST TYPE

EC TYPE

BIT NAME

ErrorAddress[15:8]

BYTE1 BIT

D15

D14

D13

D12

D11

D10

HOST TYPE

EC TYPE

BIT NAME

ErrorAddress[7:0]

BYTE0 BIT

HOST TYPE

EC TYPE

R/WC

R/W

R/WC

BIT NAME

Reserved

Config

Err

Runtime

Err

BAR_

Conflict

En_

AHB_Err

LPC_

AHB_Err

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