SH7785 Datasheet, PDF (402/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

11. Local Bus State Controller (LBSC)
Bit
Bit Name
30 to 28 IWW
27
⎯
26 to 24 IWRWD
Initial
Value R/W
111
R/W
0
R
111
R/W
Description
Idle Cycles between Write-Read/Write-Write
These bits specify the number of idle cycles to be
inserted after the access of the memory connected to
the space. The target cycles are write-read and write-
write cycles. For details, see section 11.5.8, Wait
Cycles between Access Cycles.
000: No idle cycle inserted
001: 1 idle cycle inserted
010: 2 idle cycles inserted
011: 3 idle cycles inserted
100: 4 idle cycles inserted
101: 5 idle cycles inserted
110: 6 idle cycles inserted
111: 7 idle cycles inserted
Reserved
This bit is always read as 0. The write value should
always be 0.
Idle Cycles between Read-Write in Different Spaces
These bits specify the number of idle cycles to be
inserted after the access of the memory connected to
the space. The target cycles are read-write cycles in
which consecutive accesses are performed to different
spaces. For details, see section 11.5.8, Wait Cycles
between Access Cycles.
000: No idle cycle inserted
001: 1 idle cycle inserted
010: 2 idle cycles inserted
011: 3 idle cycles inserted
100: 4 idle cycles inserted
101: 5 idle cycles inserted
110: 6 idle cycles inserted
111: 7 idle cycles inserted
Rev.1.00 Jan. 10, 2008 Page 372 of 1658
REJ09B0261-0100