LMC7532 datasheet(1/2 Pages) NSC

Part #	LMC7532

Description	Low EMI, Low Power XGA/SVGA TFT-LCD Column Driver

PDF	2 Pages

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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LMC7532

Low EMI, Low Power XGA/SVGA TFT-LCD Column Driver

General description

The LMC7532 is a Column Driver suitable for Nation-

al’s Reduced Swing Differential Signalling (RSDS)

digital interface. It converts this 18-bit digital data into

analog voltage for 300 or 309 columns, charging each

sub-pixel to the correct gray level corresponding to the

digital value.

The RSDS path to the panel timing controller contrib-

utes toward lowering radiated EMI, reducing system

power consumption and eliminates one of the two pix-

el busses used in typical XGA TFT-LCD panels today.

This single 9-bit differential bus conveys the 18-bit

color data for XGA panels at 130Mb/s when using

VESA 60 Hz standard timing.

With the addition of a single National DS90CF364 or

‘564 FPD-Link™ chip, and the FPD63310 Universal

Interface XGA/SVGA Timing controller, the entire data

path is optimized for reduced EMI, power consump-

tion and width.

Feature

s Reduced Swing Differential Signalling (RSDS)™

digital bus reduces power, EMI and width from tim-

ing controller.

s Selectable 300/309 outputs provides ability to

drive SVGA and XGA TFT-LCD systems.

s Switched reference type DAC gives high accuracy

with low reference current requirements.

s Clock Frequency up to:

65MHZ

s Typical Accuracy:

+/-5 mV

s Narrow bus.

s 64 gray scales.

s Receive RSDS @ 130Mb/s width @ 65MHz clock

from FPD 63310.

System Diagram

Gray scale

Reference

FPD63310

XGA Panel

Timing

Controller

NM93CSxxL

Serial EEPROM

Panel

Power

Supply

/2 Link1

/2 Link2

/2 Link3

/2 LinkC

LMC7532

1024 X 768 or 800 X 600

TFT-LCD Array

VDD

VSS

Start Pulse

Inversion

Control

/9 + CLK, RSDS BUS

Line Transfer Signal

Gray Scale Voltage Reference BUS

A1

An

E1

En

FIGURE 1. Block diagram of the LCD module

FPD-Link™ is a trademark of National Semiconductor

ADVANCED INFORMATION

NOV, 1997

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LMC7532 Datasheet(PDF) 1 Page - National Semiconductor (TI)

LMC7532 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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