Planar LC12 Guia De Especificaciones

 

Title:  Engineering Specification: 12.1-inch AMLCD Monitor 

Page 12 of  27 

Document Number: 023-0284-00 

 

          Revision:  A 

 

Sync pulses for horizontal and vertical are TTL levels.  Figure 8 defines the levels and 
drive current capabilities. 

CONTROL

LOGIC

+ I

MPUL

LPUL

MPDL

LPDL

5.5

&

volt

2.5

&

volt @ I = 0.4ma

Source Current

0.4

&

volt @ I = 4.0ma

Sink Current

0.0

&

volt

MOST POSITIVE UP LEVEL

LEAST POSITIVE UP LEVEL

MPUL

LPUL

MOST POSITIVE DOWN LEVEL

LEAST POSITIVE DOWN LEVEL

MPDL

LPDL

DISPLAY

 

Figure 6. TTL Allowable Signal Levels 

The polarity of incoming horizontal/vertical frequencies and synchronization pulses define 
the video resolution being presented.  Video modes are listed in Table 3. 
 

 

 

Horizontal 

(KHz) 

Vertical 

(Hz) 

Horizontal 

Vertical 

IBM VGA  

640 x 400  

31.468  

70 

- 

+ 

IBM VGA  

640 x 480 

31.468 

60 

- 

- 

IBM VGA w/Border 

656 x 496 

31.468 

60 

- 

- 

IBM VGA  

720 x 400 

31.468  

70 

-

 

-

 

IBM VGA w/Border 

738 x 414 

31.468  

70