Fujitsu MB86R02 Jade-D Hardware Manual page 668

MB86R02 'Jade-D' Hardware Manual V1.64
following diagram shows the working principle. Note that for progressive-only systems such as 'Indigo'
the bit „F" (odd-even frame flag) must always be set to '0'.
Figure 22-5 Matching position with sync pulse generators
TOGGLE_MODE = OFF:
The output of a sync pulse generator is set or reset if the current position equals the respective
programmable position in all bits for which its don't-care-vector (which is also programmable) contains
zeros. The Off matching is dominant, i.e. when both On and Off positions are matched at the same
time, the output of the sync pulse generator is reset.
TOGGLE_MODE = ON:
The output of a sync pulse generator toggles if the current position equals the respective
programmable position in all bits for which its don't-care-vector (which is also programmable) contains
zeros. Toggle mode allows e.g. frame wise toggling signals. Set/Reset overrides toggle, and if both
positions match and toggle, they cancel each other out.
22.5.2.4.4 Sequence Matching
A more sophisticated and powerful approach to creating first-stage signals is the use of a sequencer
RAM to match a whole sequence of positions. The following diagram shows the principle of operation.
A sync sequencer (SyncSeq) follows an arbitrary sequence of timing positions and generates an
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