PP708B : Timing Controller for Analog TFT-LCD Module

General Description

This timing controller is a CMOS LSI controlling for various analog TFT-LCD panel (Stripe Type: 480x234, 400x234, 320x234, Delta Type: 160x234) at any company panel. It accepts video synchronization signal (composite sync) and provides all the necessary timing signals to control the LCD source and gate drivers. Built-in PLL sub-function with external VCO and low pass filter circuits produces system clock whick synchronizes input composite synchronization signal. Especially, the internal noise filter with more than 70taps is added to separate HSYNC(Horizontal Sync) and VSYNC(Vertical Sync) signal from CSYNC(Composite Sync) carried nose like TV signal.

It supported any company analog panel(including sharp panel) and small size delta type panel.

Freatures

(1) Master clock frequency

(2) Built-in Phase Comparator for PLL sub-function
- It creates the divide signal compared with CSYNC input.
- It need to use the external OP-Amp for LPF(Loop Filter) and VCO.
(Note) Refer to application circuit (Page 30).
(3) Built-in the Vertical Sync separator to get VSYNC from CSYNC input.
- It need not use the external circuit for Vertical Sync separation (slicer)
- Input is only CSYNC (Composite Sync Signal)
(4) Provides the control timing signal of LCD source and gate drivers.
All the necessary output signals to control the LCD source and gate driver is as follows:
- Source : HCLK1, HCLK2, HCLK3, STH1, STH2, OEH
- Gate : CPV, STV1, STV2, OEV1, OEV2, OEV3, MOD1, MOD2, FRP
(5) Provides the timing scan signals for Left / Right and Up / Down shift control.
(6) Provides Horizontal and vertical positions adjustment function.
- Horizontal: 1 sign bit and external RC delay
-> It is possible to control the start position on horizontal with detailed and largely
- Vertical : 3-bit (-4 ~ 3 lines: signed)
(7) Provides the several display mode ( Full, Normal, Zoom etc. ) .
- Full, Normal, Zoom1, Zoom2, Zoom3, Wide, Zoom Wide1, Zoom Wide2
(8) Provides Serial Communication
- CS, CLK, DATA
(9) NTSC/PAL system timing
- It has two types of method to select video (NTSC/PAL)
: Manual NTSC/PAL Selection or Auto NTSC/PAL Detection
- It outputs video detection signal whether video signal exits or not.
(10) It supports RGB pattern signal.
- It can use PLL clock or external clock (dot clock)
(11) Package: 48-TQFP
(12) Single power supply: 5.0Volts.
- Including Regulator (LDO: 5V to 3.3V)
- The output voltage of the signal related with panel will be 3.3V or 5.0V according to panel Logic voltage.

Applications

USB & PS2 Keyboard Encoder
General Purpose MCU

Block Diagram

Products/Packages