Summary TC90104AFG

Page 7

Rev.1.00

2015/10/16

5.2.4

Typical input level of analog input signal

Fig.1 Reference input level to CVBS1(Composite Video) and CVBS2/Y/G(S-Video Y, Componet Y) when 100% White

(i.e., composite video input)

CVBS, Y, Component-Y signal need to input 0.7 Vpp when 140IRE, and also C signal (S-signal) need to input 0.2 Vpp

when 40IRE. (VDD = 2.5 V, 140IRE = 0.7 Vpp at NTSC )

When use Component-CbCr , CbCr-level is 0.7 Vpp for 100%.

An above waveform is color bar signal of 75%

Input terminal

Input level = Vp-p

*1

Output : LSB

*2

Notes

CVBS

0.7 Vp-p (500 mVp-p)

16-235 (for 8bit)

Output at 656/601 format

Y

0.7 Vp-p (500 mVp-p)

16-235 (for 8bit)

Output at 656/601 format

C

0.2 Vp-p (Burst signal)

31-225 (for 8bit)

Output at 656/601 format

Cb

0.7 Vp-p

31-225 (for 8bit)

Output at 656/601 format

Cr

0.7 Vp-p

31-225 (for 8bit)

Output at 656/601 format

*1

About input level,

It has indicate the case of NTSC.

CVBS and Y input level will be 140IRE at the White of 100%.

Please adjust to 0.7 V this 100%.

Values in the ( ) is the level of from the pedestal to white 100%.

Input level of C(= chroma signal) has indicate the burst level at the time of NTSC.

Input level of CbCr has indicate the level of color-100% at the time of NTSC.

*2

About output level,

It has indicate the case of NTSC.

CVBS and Y output level is white100% output level at the time of NTSC.

Values in the ( ) is the output level of from the pedestal to white 100%.

Output level of C(chroma signal) indicate the CbCr level at the time of color-100%.

Output level of CbCr indicate the level of color-100% at the time of NTSC.

Notes: The above output level is influenced by the picture quality adjustment of contrast, gain, ACC and others.

It does not indicate the maximum level.

100

-40

0

20

40

60

80

-20

256

51

767

0

1023

<IRE>

<Lsb>

AVDD×0.4V

0.7Vp-p

<LSB>