Ecc Control Register Eccr - Intel IXP45X Developer's Manual

11.6.7

ECC Control Register ECCR

This register programs the MCU error correction and detection capabilities. The
configuration depends on the application's needs but a typical configuration is:
• ECC Mode Enabled
• Enable multi-bit error reporting
• Disable single-bit error reporting
• Enable single-bit error correcting
ECC must be enabled or disabled in the ECCR MMR before any transaction to DDRI
occurs, and its state must NOT subsequently be changed. For more details, see
Correction and Detection" on page 614
Register Name:
Hex Offset Address:
Register Description:
Access: See below.
31
Register
Bits Name
31:0
(Reserved)
4
ECC Enabled: Enables ECC Read Modify Write sequence for ECC
calculation and generation during sub 64-bit writes. See
Disabled" on page
03
0 = ECC Disabled (mode for Intel XScale processor ECC scrub)
1 = ECC Enabled (normal operation)
Single Bit Error Correction Enable: Enables or disables the
correction of a single bit error.
02
0 = Disable single bit error correction
1 = Enable single bit error correction
Multi-Bit Error Reporting Enable: Enables or disables the reporting
of a multi-bit error condition.
01
0 = Disable multi-bit error reporting
1 = Enable multi-bit error reporting
Single Bit Error Reporting Enable: Enables or disables the
reporting of a single bit error condition.
00
0 = Disable single bit error reporting
1 = Enable single bit error reporting
Note: In order to ensure predictable ECC operation, Single Bit Error Correction Enable must
be enabled whenever ECC is enabled. The reporting enables can be configured as
desired.
® ®
Intel IXP45X and Intel IXP46X Product Line of Network Processors
Developer's Manual
640
® ®
Intel IXP45X and Intel
CC00 E51CH
ECC Control Register
(Reserved)
Description
625.
IXP46X Product Line of Network Processors—Memory Controller
and "Interrupts/Error Conditions" on page
ECC Control Register - ECCR
Reset Hex Value:
ECC Control Register - ECCR
"ECC
"Error
627.
0x0000 0000H
04 03 02 01 00
Default Access
000 0000H RO
0 RW
2
0 RW
2
0 RW
2
0 RW
2
August 2006
Order Number: 306262-004US