Ecc Read Data Flow - Intel IXP45X Developer's Manual

®
Memory Controller—Intel
Figure 121. ECC Read Data Flow
Figure 122
errors, the H-Matrix indicates the bit that contains the error and, consequently, which
bit to fix.
August 2006
Order Number: 306262-004US
®
IXP45X and Intel IXP46X Product Line of Network Processors
MCU
Data Corrector
(single-bit error)
Data to Internal Bus
illustrates the H-Matrix used for decoding the syndrome. For single-bit
Main
Memory
32-bit Zero-extend (0x00000000)
Calculate ECC
with G-matrix
Calculate Syndrome by
Comparing ECC w/Check Bits
Error Type/Location
Look-up Table
® ®
Intel IXP45X and Intel IXP46X Product Line of Network Processors
ECC
Memory
H-matrix
Developer's Manual
B2451-01
621