63

Typical Input Signal Timing

 

 

VGA Compatible

 

XGA-2 Compatible

 

Mac Ⅱ, Quadra,

 

 

 

 

or LC Compatible

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Resolution

640×350

 

720×400

 

640×480

720×350

720×400

 

640×480

640×480

 

 

 

 

 

 

 

 

 

 

 

Horizontal Frequency

31.469KHz

 

31.469KHz

 

31.469KHz

39.444KHz

39.444KHz

 

39.375KHz

35.000KHz

 

 

 

 

 

 

 

 

 

 

 

(A) Horizontal Period

31.778∝sec

 

31.778∝sec

 

31.778∝sec

25.352∝sec

25.352∝sec

 

25.397∝sec

28.570∝sec

 

 

 

 

 

 

 

 

 

 

 

(B) Horizontal Pulse Width

3.813∝sec

 

3.813∝sec

 

3.813∝sec

3.042∝sec

3.042∝sec

 

3.048∝sec

2.120∝sec

 

 

 

 

 

 

 

 

 

 

 

(C) Horizontal Back Porch

1.589∝sec

 

1.589∝sec

 

1.589∝sec

1.522∝sec

1.522∝sec

 

1.524∝sec

3.170∝sec

 

 

 

 

 

 

 

 

 

 

 

(D) Horizontal Active Area

26.058∝sec

 

26.058∝sec

 

26.058∝sec

20.282∝sec

20.282∝sec

 

20.317∝sec

22.810∝sec

 

 

 

 

 

 

 

 

 

 

 

(E) Hrizontal Front Porch

0.318∝sec

 

0.318∝sec

 

0.318∝sec

0.508∝sec

0.508∝sec

 

0.508∝sec

0.180∝sec

 

 

 

 

 

 

 

 

 

 

 

 

VESA

VESA

VESA

VESA

MAC Ⅱ

8514/A & XGA

VESA

 

HDTV

 

640×480

800×600

800×600

800×600

&

Interlaced

1024×768

HDTV

 

Interlaced

 

at 72Hz

at 56Hz

at 60Hz

at 72Hz

Quadra

Compartible

at 60Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Resolution

640×480

800×600

800×600

800×600

832×624

1024×768

1024×768

1028×720

1920×1080

 

 

 

 

 

 

 

 

 

 

Horizontal Frequency

37.860KHz

35.156KHz

37.879KHz

48.077KHz

49.725KHz

35.587KHz

48.363KHz

45.000KHz

33.750KHz

 

 

 

 

 

 

 

 

 

 

(A) Horizontal Period

26.413∝sec

28.444∝sec

26.400∝sec

20.800∝sec

20.111∝sec

28.100∝sec

20.677∝sec

22.222∝sec

29.630∝sec

 

 

 

 

 

 

 

 

 

 

(B) Horizontal Pulse Width

1.270∝sec

2.000∝sec

3.200∝sec

2.400∝sec

1.117∝sec

3.910∝sec

2.092∝sec

1.077∝sec

1.185∝sec

 

 

 

 

 

 

 

 

 

 

(C) Horizontal Back Porch

4.063∝sec

3.556∝sec

2.200∝sec

1.280∝sec

3.910∝sec

1.247∝sec

2.462∝sec

2.963∝sec

1.993∝sec

 

 

 

 

 

 

 

 

 

 

(D) Horizontal Active Area

20.317∝sec

22.222∝sec

20.000∝sec

16.000∝sec

14.524∝sec

22.760∝sec

15.754∝sec

17.226∝sec

25.845∝sec

 

 

 

 

 

 

 

 

 

 

(E) Horizontal Front Porch

0.762∝sec

0.667∝sec

1.000∝sec

1.120∝sec

0.559∝sec

0.178∝sec

0.369∝sec

0.956∝sec

0.606∝sec

 

 

 

 

 

 

 

 

 

 

*VGA, XGA, XGA-2, and 8514/A are the trademarks of International Business Machines Corporation. *Macintosh II, Quadra, and LC are the trademarks of Apple Computer Inc.

*VESA is the trademark of a non-profit organization, Video Electronics Standards Association.

64

37