SH7751 Datasheet, PDF (470/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

13. Bus State Controller (BSC)
Bits 5 to 3—Area 0 Wait Control (A0W2 to A0W0): These bits specify the number of wait
states to be inserted for area 0. For the case where an MPX interface setting is made, see table
13.7.
Bit 5: A0W2
0
1
Bit 4: A0W1
0
1
0
1
Bit 3: A0W0
0
1
0
1
0
1
0
1
Description
First Cycle
Inserted Wait States
RDY Pin
0
Ignored
1
Enabled
2
Enabled
3
Enabled
6
Enabled
9
Enabled
12
Enabled
15 (Initial value)
Enabled
Bits 2 to 0—Area 0 Burst Pitch (A0B2–A0B0): These bits specify the number of wait states to
be inserted from the second data access onward at the time of setting the burst ROM in a burst
transfer.
Bit 2: A0B2
0
1
Bit 1: A0B1
0
1
0
1
Bit 0: A0B0
0
1
0
1
0
1
0
1
Description
Burst Cycle (Excluding First Cycle)
Wait States Inserted from
Second Data Access Onward RDY Pin
0
Ignored
1
Enabled
2
Enabled
3
Enabled
4
Enabled
5
Enabled
6
Enabled
7 (Initial value)
Enabled
Rev.4.00 Oct. 10, 2008 Page 372 of 1122
REJ09B0370-0400