
157
Table 9.1
Register Configuration
Name
Abbreviation
R/W
Initial
Value
Address
Access Size
(Bits)
Cache control register
CCR
R/W
H'0000
*
H'FFFF8740
8, 16, 32
Note:
*
Bits 15–5 are undefined.
9.2
Register Explanation
9.2.1
Cache Control Register (CCR)
The cache control register (CCR) selects the cache enable/disable of each space.
The CCR is a 16-bit readable/writable register. It is initialized to H'0000 by power on resets, but is
not initialized by manual resets or standby mode.
Bit:
15
14
13
12
11
10
9
8
—
—
—
—
—
—
—
—
Initial value:
*
*
*
*
*
*
*
*
R/W:
R
R
R
R
R
R
R
R
Bit:
7
6
5
4
3
2
1
0
—
—
—
CE
DRAM
CE
CS3
CE
CS2
CE
CS1
CE
CS0
Initial value:
*
*
*
0
0
0
0
0
R/W:
R
R
R
R/W
R/W
R/W
R/W
R/W
Note:
*
Bits 15–5 are undefined.
•
Bits 15–5—Reserved: Reading these bits gives undefined values. The write value should
always be 0.
•
Bit 4—DRAM Space Cache Enable (CEDRAM): Selects whether to use DRAM space as a
cache object (enable) or to exclude it (disable). A 0 disables, and a 1 enables such use.
Bit 4 (CEDRAM)
Description
0
DRAM space cache disabled (initial value)
1
DRAM space cache enabled
Содержание SH7041 Series
Страница 2: ......
Страница 6: ......
Страница 38: ...xvi ...
Страница 44: ...6 ...
Страница 46: ...8 ...
Страница 48: ...10 ...
Страница 82: ...44 ...
Страница 114: ...76 ...
Страница 118: ...80 ...
Страница 124: ...86 ...
Страница 170: ...132 ...
Страница 250: ...212 ...
Страница 492: ...454 ...
Страница 506: ...468 ...
Страница 604: ...566 ...
Страница 684: ...646 ...
Страница 706: ...668 ...
Страница 778: ...740 ...
Страница 780: ...742 ...
Страница 818: ...780 ...
Страница 850: ...812 ...
Страница 923: ...SH7040 SH7041 SH7042 SH7043 SH7044 SH7045 Group Hardware Manual REJ09B0044 0600O ...