Renesas R5S72621 Manual De Usuario
Section 25 NAND Flash Memory Controller
R01UH0134EJ0400 Rev. 4.00
Page 1293 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
25.3.1
Common Control Register (FLCMNCR)
FLCMNCR is a 32-bit readable/writable register that specifies access mode, and other items.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Bit:
Initial value:
R/W:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit:
Initial value:
R/W:
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R
R
R/W
R/W
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
R
R
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R/W
R
R
R
-
-
-
-
-
-
ECCPOS
[2]
4ECCCN
TEN
4ECCEN
4ECCCO
RRECT BUSYON
-
-
SNAND
QT
SEL
-
-
-
ECCPOS[1:0]
ACM[1:0]
NAND
WF
-
-
-
-
-
CE
-
-
-
Bit Bit
Name
Initial
Value R/W
Value R/W
Description
31 to 26
All
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
always be 0.
25 ECCPOS
[2]
0
R/W
See the description of ECCPOS[1:0] at bits 13 and 12.
24 4ECCCN
TEN
0
R/W
4-Symbol ECC Error Count
Selects whether to output to the FL4ECCCNT register
the total number of errors found in the sectors that have
been read and the maximum number of errors found in
a single sector.
the total number of errors found in the sectors that have
been read and the maximum number of errors found in
a single sector.
0: Error counting is not performed.
1: When 4-symbol ECC circuit is used, the total number
of errors found in the read sectors and the maximum
number of errors in a sector are output to
FL4ECCCNT.
number of errors in a sector are output to
FL4ECCCNT.
Note: When this bit is set to 1, the 4ECCCORRECT bit
must be cleared to 0.
23
4ECCEN
0
R/W
4-Symbol ECC Circuit Enable
Enables the 4-symbol ECC circuit by setting this bit to 1
in sector access mode.
in sector access mode.
0: 3-symbol ECC circuit is enabled.
1: 4-symbol ECC circuit is enabled.