M35053-001FP MITSUBISHI [Mitsubishi Electric Semiconductor], M35053-001FP Datasheet - Page 16

• Manufacturer Part Number: M35053-001FP
• Description: SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS??
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Supplemental explanation about display control register
(1) How to effect synchronous separation from composite video signals
16
Fig. 4 The method of synchronous separation from composite video signal.
(2) Field definition
Fig. 5 Field definition
Synchronous separation is effected as follows depending on the width of L-level of the vertical synchronous period.
The determination is made at the timing indicated by V in Fig.3 either in case 2 or in case 3.
Second field
1. Less than 8.4µs ······ Not to be determined to be a vertical synchronous signal.
2. Equal to or higher than 8.4µs but less than 15.6µs ······ When two clocks continue, if take place, it is “L” period is determined to be a
3. Equal to or higher than 15.6µs ······ It is “L” period is determined to be a vertical synchronous signal with no condition.
First field
Composite video signal
vertical synchronization signal.
Vertical synchronous signal
Equalizing pulse
1H
1/2H
1
1
’
2
2
’
3
3
’
4
4
’
8.4
15.6
5
5
A horizontal scanning line number corresponds to slice lines DVP4 through
DVP0 (address F1
’
s
Sequence of synchronizing pulse
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
s
6
6
’
stands for either an equalizing pulse or sequence of synchronizing
pulse to be used as a trigger of a receiving set. H stands for a hori-
zontal scanning period.
7
7
’
8.4
8
8
16
’
) and to encode lines EVP4 through EVP0 (address F2
s
9
9
1/2H
’
1H
10
10
MITSUBISHI MICROCOMPUTERS
’
11
Pulses during a vertical
retrace line erasure period
M35053-XXXSP/FP
V
8–12H
16
).