8 x 8 Video Crosspoint Switch
Figure 3. BASIC Program for Loading Data into the MAX456 from a PC Using Figure 2's Circuit
____________________________________________________________Timing Diagrams
A0-A2
D0-D3
WR
LATCH
VALID DATA N-1
VALID DATA N
tDS
tDH
tWL
tWH
tD
tL
Figure 4. Write Timing for Serial- and Parallel-Interface Modes
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