IA63484
Data Sheet
Advanced CRT Controller
AC Characteristics (continued):
DMA Read / Write Cycle Timing:
9.8 MHz Version
Item
Symbol
Unit
Min
Max
dreq_n Delay Time 1
tDRQD1
tDRQD2
tDMRWS
tDMRWH
tDAKS
110
70
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tCYC
dreq_n Delay Time 2
DMA r / w_n Setup Time
DMA r / w_n Hold Time
50
0
dack_n Setup Time
40
60
0
dack_n Hold Time
tWDAKH
tDRW
DMA Read Wait Time
tDRDAC
tDRDH
tDRDZ
DMA Read Data Access Time
DMA Read Data Hold Time
DMA Read Data Turn Off Time
DMA dtack_n Delay Time (Z to L)
DMA dtack_n Delay Time (D to L)
DMA dtack_n Release Time (L to H)
DMA dtack_n Turn Off Time (H to Z)
done_n Output Delay Time
done_n Output Turn Off Time
Data Bus 3-State Recovery Time 2
done_n Input Pulse Width
DMA Write Wait Time
80
10
0
60
70
tDDTZL
tDDTDL
tDDTLH
tDDTHZ
tDND
80
100
70
tDNL2
80
tDBRT2
tDNPW
tDWW
0
2
0
ns
ns
ns
tDWDS
tDWDH
DMA Write Data Setup Time
DMA Write Data Hold Time
40
10
Copyright ã 2001
innovASIC
ENG 21101041200
Page 25 of 32
www.innovasic.com
Customer Support:
The End of Obsolescenceä
1- 888- 824- 4184
INNOVASIC [ INNOVASIC, INC ]
