57

Typical Input Signal Timing

 

 

VGA Compatible

 

XGA-2 Compatible

 

Mac ￿U, 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

31.778μsec

 

31.778μsec

 

31.778μsec

25.352μsec

25.352μsec

 

25.397μsec

28.570μsec

 

 

 

 

 

 

 

 

 

 

 

(B) Horizontal Pulse Width

3.813μsec

 

3.813μsec

 

3.813μsec

3.042μsec

3.042μsec

 

3.048μsec

2.120μsec

 

 

 

 

 

 

 

 

 

 

 

(C) Horizontal Back Porch

1.589μsec

 

1.589μsec

 

1.589μsec

1.522μsec

1.522μsec

 

1.524μsec

3.170μsec

 

 

 

 

 

 

 

 

 

 

 

(D) Horizontal Active Area

26.058μsec

 

26.058μsec

 

26.058μsec

20.282μsec

20.282μsec

 

20.317μsec

22.810μsec

 

 

 

 

 

 

 

 

 

 

 

(E) Hrizontal Front Porch

0.318μsec

 

0.318μsec

 

0.318μsec

0.508μsec

0.508μsec

 

0.508μsec

0.180μsec

 

 

 

 

 

 

 

 

 

 

 

 

VESA

VESA

VESA

VESA

MAC ￿U

8514/A & XGA

VESA

 

640￿~480

800￿~600

800￿~600

800￿~600

&

Interlaced

1024￿~768

 

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

 

 

 

 

 

 

 

 

Horizontal Frequency

37.860KHz

35.156KHz

37.879KHz

48.077KHz

49.725KHz

35.587KHz

48.363KHz

 

 

 

 

 

 

 

 

(A) Horizontal Period

26.413μsec

28.444μsec

26.400μsec

20.800μsec

20.111μsec

28.100μsec

20.677μsec

 

 

 

 

 

 

 

 

(B) Horizontal Pulse Width

1.270μsec

2.000μsec

3.200μsec

2.400μsec

1.117μsec

3.910μsec

2.092μsec

 

 

 

 

 

 

 

 

(C) Horizontal Back Porch

4.063μsec

3.556μsec

2.200μsec

1.280μsec

3.910μsec

1.247μsec

2.462μsec

 

 

 

 

 

 

 

 

(D) Horizontal Active Area

20.317μsec

22.222μsec

20.000μsec

16.000μsec

14.524μsec

22.760μsec

15.754μsec

 

 

 

 

 

 

 

 

(E) Horizontal Front Porch

0.762μsec

0.667μsec

1.000μsec

1.120μsec

0.559μsec

0.178μsec

0.369μsec

 

 

 

 

 

 

 

 

*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.

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