MB86296 Datasheet, PDF (207/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
Bit 11 and 10
LOWD
Sets the count of clocks secured for the period from the instant the ending data is
output to the instant the write command is issued.
10
2 clocks
Other than Setting disabled
the above
Bit 13 and 12
TRCD
Sets the wait time secured from the bank active to CAS. The clock count is used to
express the wait time.
11
3 clocks
10
2 clocks
01
1 clock
00
0 clock
Bit 16 to 14
TRAS
Sets the minimum time for 1 bank active. The clock count is used to express the
minimum time.
111
7 clocks
110
6 clocks
101
5 clocks
100
4 clocks
011
3 clocks
010
2 clocks
Other than Setting disabled
the above
Bit 18 and 17
TRP
Sets the wait time secured from the pre-charge to the bank active. The clock count is
used to express the wait time.
11
3 clocks
10
2 clocks
01
1 clock
Bit 22 to 19
TRC
This field sets the wait time secured from the refresh to the bank active. The clock
count is used to express the wait time.
1010
10 clocks
1001
9 clocks
1000
8 clocks
0111
7 clocks
0110
6 clocks
0101
5 clocks
0100
4 clocks
MB86296S <Coral-PA>
197
Specification Manual Rev0.1