SH7203 Datasheet, PDF (1114/1686 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 22 AND/NAND Flash Memory Controller (FLCTL)
(2) Continuous Sector Access
Continuous physical sectors can be read or written by specifying the start physical sector of
NAND-type flash memory and the number of sectors to be transferred. Figure 22.16 shows an
example of physical sector specification register and transfer count specification register settings
when transferring logical sectors 0 to 40, which are not contiguous because of an unusable sector
in NAND-type flash memory.
Physical Logical
sector sector
0
0
11
11
12
13
13
40
40
300
12
Values specified in registers by the CPU.
Physical sector Sector transfer count
specification register specification register
(FLADR, ADR17 to 0) (FLCMDCR,SCTCNT) _{Transfer start}
00
12
Sector 0 to sector 11 are transferred
300
1
Transfer start
Sector 12 is transferred
13
28
Transfer start
Sector 13 to sector 40 are transferred
Figure 22.16 Sector Access when Unusable Sector Exists in Continuous Sectors
22.4.6 ECC Error Correction
The FLCTL generates and adds an ECC code during write operation in sector access mode and
performs ECC error check during read operation in sector access mode. The FLCTL, however,
does not perform error correction. Note that errors must be corrected by software.
Rev. 2.00 Apr. 16, 2008 Page 1084 of 1652
REJ09B0313-0200