HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 639

• Manufacturer Part Number: HD6417034B
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Table A.43 WCR2 Bit Functions
Bit
15–8 Single mode
7–0
Bit Name
DMA memory
read wait state
control (DRW7–
DRW0)
Single mode
DMA memory
write wait state
control (DWW7–
DWW0)
0
1
0
1
Value
WAIT
WAIT Pin
WAIT
WAIT
Signal Input
Not sampled
during single
mode DMA
memory read
cycle
Sampled
during single
mode DMA
memory read
cycle
(Initial value)
Not sampled
during single
mode DMA
memory write
cycle
Sampled
during single
mode DMA
memory write
cycle
(Initial value)
Appendix A On-Chip Supporting Module Registers
External
Memory Space
Areas 1, 3–5, 7:
fixed at 1 cycle
Areas 0, 2, 6:
1 cycle + long
wait state
Areas 1, 3–5, 7:
wait state is 2
cycles plus
WAIT
Areas 0, 2, 6:
1 cycle + long
wait state, or
wait state from
WAIT
Areas 1, 3–5, 7:
fixed at 1 cycle
Areas 0, 2, 6:
1 cycle + long
wait state
Areas 1, 3–5, 7:
wait state is 2
cycles plus
WAIT
Areas 0, 2, 6:
1 cycle + long
wait state, or
wait state from
WAIT
Rev. 7.00 Jan 31, 2006 page 613 of 658
Number of Single Mode DMA
External Space Cycle States
Description
DRAM
Space
Column
address cycle:
Fixed at 1
cycle (short-
pitch)
Column
address cycle:
Wait state is 2
cycles plus
WAIT (long-
pitch)
Column
address cycle:
Fixed at 1
cycle (short-
pitch)
Column
address cycle:
Wait state is 2
cycles plus
WAIT (long-
pitch)
REJ09B0272-0700
Multiplex
I/O
Wait state is 4
cycles plus
WAIT
Wait state is 4
cycles plus
WAIT