82C84A
CLOCK
SYNCHRONIZE
EFI
D
Q
>
D
Q
>
EFI
82C84A
CSYNC
(TO OTHER 82C84As)
NOTE: If EFI input is used, then crystal input X1 must be tied to VCC or GND and X2 should be left open. If the crystal inputs are used,
then EFI should be tied to VCC or GND.
FIGURE 1. CSYNC SYNCHRONIZATION
5
FN2974.3
December 6, 2005