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3 mac, Mac -21 – Intel 460GX User Manual

Page 41

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Intel® 460GX Chipset Software Developer’s Manual

2-21

Register Descriptions

This register records and latches the data corresponding to the first DED detected by system bus
interface in the SDC.

Bits

Description

63:0

DE - System Data of Error.

2.4.2.30

DEDF_ECC_FERR: ECC on First System Bus DED

Bus CBN, Device Number:

04h

Address Offset:

F8h

Size:

8 bits

Default Value:

00h

Attribute:

Read Only, New Value Latched
anytime appropriate FERR register
bit is set

This register records and latches the ECC checkbits corresponding to the first DED detected by
system bus interface in the SDC.

Bits

Description

7:0

ECC - ECC of Error.

2.4.2.31

DEDF_TXINFO_FERR: TXINFO on First System Bus DED

Bus CBN, Device Number:

04h

Address Offset:

F9-FAh

Size:

16 bits

Default Value:

00h

Attribute:

Read Only, New Value Latched
anytime appropriate FERR register
bit is set

This register records the ITID and failing chunk corresponding to the first DED detected by system
bus interface in the SDC.

Bits

Description

15:9

reserved(0)

8:6

DC - Data Chunk of ITID.

5:0

ITID - ITID of error.

2.4.3

MAC

2.4.3.1

FERR_MAC: First Error Status Register

Bus CBN, Device Number: 05h,06h

Function Number: 00h,01h

Address Offset:

98h

Size:

8 bits

Default Value:

00h

Attribute:

Read

This register records the first error condition detected in the MAC.

Bits

Description

7:2

reserved(0)

1

Que-Overflow Error
Signals that the MAC received too many commands from the SAC.