I/O port at the falling edge of the port clock.
Figure 32 shows the proper waveforms that are
applied to the appropriate serial port signal pins
during a read to write transition. The strobe input
in this case is held low. Time Ttsd is the Data I/O
Figure 32: Read to Write Diagram.
L6238
Tri State Delay.
Figure 33 displays the timing diagram during a
write to read operation.
6.5 Control Register
Figure 33: Write to Read Diagram.
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