M65676FP Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC

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M65676FP

DIGITAL NTSC/PAL ENCODER

MITSUBISHI ELECTRIC  

PRELIMINARY

Notice:This is not a final specification.

Some parametric limits are subject to change.

MITSUBISHI ICs (TV)

M65675FP/M65676FP

DIGITAL NTSC/PAL ENCODER

CGMS (IEC 1880) Encoding

In the NTSC (525/60) mode, the 20-bit data, consisting of 14-bit

data including CRCC code and 6-bit error correction code

generated by the input data, are converted into the video format

shown in fig. 2 and then inserted in TV line 20/283, according to the

register data of CGMS control mode (CGMS on/off).

The transferred data are loaded to the register on the trailing edge

of V-sync, after a write-enable (WE) was set to "1".

Ref Bit

Input Data

CRCC

Color

Burst

2.232±50µs

11.2±0.3µs

19(282) line

49.1±0.3µs

63.556µs

20(283) line

21(284) line

Fig. 2 CGMS WAVEFORM

WSS (ETS 300 294) Encoding

In the PAL (625/50) mode, 14-bit data, set in the register, is

modulated to the signal format shown in fig. 3 and then will be

inserted into TV line 23, according to the register data of WSS

control mode (WSS on/off).

The new register data are loaded on the trailing edge of V-sync,

after a write-enable (WE) was set to "1".

"0"

"1"

Color

Burst

Run in Start code

Input Data

1F1C71C7 1E3C1F group1 group2 group3 group4

Aspect Enhanced Subtit- Others

Ratio Services les

(4bit) (4bit)

(3bit) (3bit)

200±10ns 200±10ns

22 line

11.0±0.25µs

7

27.4±1.4µs

64.0µs

23 line

Fig. 3 WSS WAVEFORM

24line

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