MB86290A Datasheet, PDF (100/184 Pages) Fujitsu Component Limited. – Graphics Controller Hardware Specifications

Bits 11-10
LOWD
Set last data output to next write command input latency
10
2 clocks
Others
Prohibited
Bits 13-12
TRCD
Set Bank Active to CAS latency
11
3 clocks
10
2 clocks
Others
Prohibited
Bits 16-14
TRAS
Set minimum Bank Active cycle
111
7 clocks
110
6 clocks
101
5 clocks
Others
Prohibited
Bits 18-17
TRP
Set Precharge to Bank Active wait time
11
3 clocks
10
2 clocks
Others
Prohibited
Bits 22-19
TRC
Set refresh to Bank Active wait time
1010
10 clocks
1001
9 clocks
1000
8 clocks
0111
7 clocks
Others
Prohibited
Bits 24-23
TRRD
Set Bank Active to next Bank Active wait time
11
3 clocks
10
2 clocks
Others
Prohibited
100