Intel 81342 Developer's Manual page 612

F i g u r e 9 4
F i g u r e 9 4 . D D R E C C R e a d D a t a F l o w
®
I n t e l 8 1 3 4 1 a n d 8 1 3 4 2 I / O P r o c e s s o r s
D e v e l o p e r ' s M a n u a l
6 1 2
s h o w s h o w t h e d a t a f l o w s t h r o u g h t h e E C C h a r d w a r e f o r a r e a d t r a n s a c t i o n .
MCU
Data Corrector
Error Type/Location
(single-bit error)
Data to Internal Bus
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I n t e l 8 1 3 4 1 a n d 8 1 3 4 2 — D D R S D R A M M e m o r y C o n t r o l l e r
Main ECC
Memory Memory
Calculate ECC
with G-matrix
Calculate Syndrome by
Comparing ECC w/Check Bits
H-matrix
Look-up Table
A8160-01
D e c e m b e r 2 0 0 7
O r d e r N u m b e r : 3 1 5 0 3 7 - 0 0 2 U S