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Section 25 NAND Flash Memory Controller
R01UH0134EJ0400 Rev. 4.00 Page 1335 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Ye s
No
No
Start
End
Read one sector.
Ye s
Starting single-sector read/continuous sector read
3-symbol ECC circuit is enabled.
Perform sector reading with
ECC generation only.
4ECCEN bit in
FLCMNCR = 1?
4ECCCORRECT
bit in FLCMNCR = 1?
Reading operation is suspended
after ECC error-containing sector
has been read.
4ECCEXST in FL4ECCCR is set
and correction pattern
generation starts.
Results of ECC processing are
set in FL4ECCCR and
FL4ECCRES1 to FL4ECCRES4.
Ye s
No
ECC error occurred?
End
Ye s
No
FLCMDCR.
SCTCNT == 0?
Figure 25.16 Flow of 4-Symbol ECC Operation