CXD2436Q 데이터 시트보기 (PDF) - Sony Semiconductor

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CXD2436Q

Timing Generator for LCD Panels

Sony Semiconductor 

CXD2436Q

• Connections supporting up/down and/or right/left inversion

The CXD2436Q is designed for use with three-panel projectors, and has a system configuration which

permits both normal and reverse scan. The RGT and XRGT output to the panel are switched according to

the SLRGT input, and the DWN output is switched according to the SLDWN input in the same manner.

SLRGT

12

SLDWN

11

82

RGT

83 XRGT

71

DWN

Example of supporting a three-panel system

LCX012

RGT

DWN

Normal scanning

panel

LCX012

RGT

DWN

Normal scanning

panel

LCX012

RGT

DWN

Reverse scanning

panel

• AC driving of LCD panels for no signal

The following measures have been adopted to allow AC driving of LCD panels even when there is no

signal.

• Horizontal direction pulse: The PLL is set to free running status. Therefore, the frequency of the

horizontal direction pulse is dependent on the PLL free running frequency.

• Vertical direction pulse:

The number of lines is counted by an internal counter and VST and FRP

are output at a specified cycle.

• VST cycle for no signal

• Free running detection timing

NTSC

PAL

VGA

269H

321H

526H

NTSC

PAL

VGA

291H

339H

873H

Free running operates at the following cycles.

(No signal is judged if there is no VSYNC input for longer than the following periods.)

• Description of the MODE selector switch

• VGA/AV (NTSC/PAL) switching is performed with two pins.

VGAV

H

H

L

L

PLNT

H

L

H

L

MODE

VGA

VGA

NTSC

PAL

• The HD1IN, HD2IN, VD1IN, VD2IN and CSYNC input polarities are supported by two pins.

HPOL

H

H

L

L

VPOL

H

L

H

L

HD1IN

HD2IN

Positive polarity

Positive polarity

Negative polarity

Negative polarity

VD1IN

VD2IN

Positive polarity

Negative polarity

Positive polarity

Negative polarity

CSYNC

Positive polarity

—

—

Negative polarity

—10—

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