HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 266

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

Rev. 1.00, 02/04, page 228 of 804
Bit
24
23
22
21
20
19
18
Bit Name

IWRWS1
IWRWS0

IWRRD1
IWRRD0

Initial
Value
0
1
1
0
1
1
0
R/W Description
R
R/W
R/W
R
R/W
R/W
R
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.
Idle Cycles for Read-Write 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-write 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.
Idle Cycles for Read-Read in Another 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 switch between different spaces.
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.
1
1