HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 267

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit
17
16
15
14
13
12
11
Bit Name
IWRRS1
IWRRS0

TYPE2
TYPE1
TYPE0

Initial
Value
1
1
0
0
0
0
0
R/W Description
R/W
R/W
R
R/W
R/W
R/W
R
Idle Cycles for Read-Read in the Same Space
Specify the number of idle cycles to be inserted after the
access to a memory that is connected to the space. The
target cycle is a read-read cycle of which continuous
accesses are for the same space.
00: No idle cycle inserted
01: 1 idle cycle inserted
10: 2 idle cycles inserted
11: 4 idle cycles inserted
Reserved
This bit is always read as 0. The write value should always
be 0. If 1 is written to this bit, correct operation cannot be
guaranteed.
Memory Type*
Specify the type of memory connected to a space.
000: Normal space
001: Burst ROM
010: Setting prohibited
011: Byte-selection SRAM
100: SDRAM
101: Setting prohibited
110: Setting prohibited
111: Setting prohibited
For details for memory type in each area, refer to table 9.2.
Reserved
This bit is always read as 0. The write value should always
be 0. If 1 is written to this bit, correct operation cannot be
guaranteed.
2
Rev. 1.00, 02/04, page 229 of 804