HD64F7045F28V Datasheet, PDF (217/925 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7040 Series

• Bits 7–4—CS1 Space Wait Specification (W13, W12, W11, W10): Specifies the number of
waits for CS1 space access.
Bit 7
(W13)
0
0
1
Bit 6
(W12)
0
0
⋅⋅⋅
1
Bit 5
(W11)
0
0
1
Bit 4
(W10)
0
1
1
Description
No wait (external wait input disabled)
1 wait external wait input enabled
15 wait external wait input enabled (initial value)
• Bits 3–0—CS0 Space Wait Specification (W03, W02, W01, W00): Specifies the number of
waits for CS0 space access.
Bit 3
(W03)
0
0
1
Bit 2
(W02)
0
0
⋅⋅⋅
1
Bit 1
(W01)
0
0
1
Bit 0
(W00)
0
1
1
Description
No wait (external wait input disabled)
1 wait external wait input enabled
15 wait external wait input enabled (initial value)
10.2.4 Wait Control Register 2 (WCR2)
WCR2 is a 16-bit read/write register that specifies the number of access cycles for DRAM space
and CS space for DMA single address mode transfers.
Do not perform any DMA single address transfers before WCR2 is set.
WCR2 is initialized by power-on resets to H'000F, but is not initialized by manual resets or
software standbys.
Bit: 15
14
13
12
11
10
9
8
—
—
—
—
—
—
—
—
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R
Bit: 7
—
Initial value: 0
R/W: R
6
5
4
3
2
1
0
— DDW1 DDW0 DSW3 DSW2 DSW1 DSW0
0
0
0
1
1
1
1
R
R/W R/W R/W R/W R/W R/W
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