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The dives operates at sustained synchronous DMA burst timing specifi-
cations, as shown below.
Time Description Mode 0 Mode 1 Mode 2
Tcyc Cycle time 114 nsec 75 nsec 55 nsec
T2cyc Two cycle times 235 nsec 156 nsec 117 nsec
Tds
Data setup time
(at receiver)
15 nsec 10 nsec 7 nsec
Tdh
Data hold time
(at receiver)
5 nsec 5 nsec 5 nsec
Tdvs
Data valid setup
time (at sender)
70 nsec 48 nsec 34 nsec
Tdvh
Data valid hold time
(at sender)
6 nsec 6 nsec 6 nsec
Note.
Mode values show the minimum time only.
Tds
Tdh
Tdh
Strobe at
Sender
T2cyc
Tcyc Tcyc
Tdvh
Tdvs Tdvs
T2cyc
Data at
Sender
Strobe at
Receiver
Data at
Receiver
Tdvh
Tdvh
Tdh
Tds
Figure 11. Sustained Synchronous DMA burst
40 Medalist Pro 6450/6451 Product Manual, Rev. B