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HD6417751RBP240V Datasheet, PDF (471/1226 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents
13. Bus State Controller (BSC)
• When Synchronous DRAM Interface is Set*1
Bit 11: A2W2 Bit 10: A2W1 Bit 9: A2W0
0
0
0
1
1
0
1
1
0
0
1
1
0
1
Notes: 1. External wait input is always ignored
2. Inhibited in RAS down mode
Description
Synchronous DRAM CAS Latency Cycles
Inhibited
1*2
2
3
4*2
5*2
Inhibited
Inhibited
Bits 8 to 6—Area 1 Wait Control (A1W2–A1W0): These bits specify the number of wait states
to be inserted for area 1. For the case where an MPX interface setting is made, see table 13.7.
Bit 8: A1W2
0
1
Bit 7: A1W1
0
1
0
1
Bit 6: A1W0
0
1
0
1
0
1
0
1
Description
Inserted Wait States
RDY Pin
0
Ignored
1
Enabled
2
Enabled
3
Enabled
6
Enabled
9
Enabled
12
Enabled
15 (Initial value)
Enabled
Rev.4.00 Oct. 10, 2008 Page 371 of 1122
REJ09B0370-0400