ViewSonic Corporation Confidential - Do Not Copy VX2235wm-3
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4. Circuit Description
RTD2553V
LCD Monitor/MFM Controller
General
Embedded dual DDC with DDC1/2B/CI
Zoom scaling up and down
No external memory required.
Require only one crystal to generate all timing.
Programmable 3.3V/5V detection reset output.
Embedded crystal output to micro -controller.
3 channels 8 bits PWM output, and wide range selectable PWM frequency.
Analog RGB Input Interface
Integrated 8 -bit triple-channel 210/165 (optional) MHz ADC/PLL
Embedded programmable Schmitt trigger of HSYNC
Support Sync On Green (SOG) and various kinds of composite sync modes
On -chip high-performance hybrid PLLs
High resolution true 64 phase ADC PLL
Y/Pb/Pr support up to HDTV 1080i resolution
Support 2/1 Analog input (optional )
Digital Video Input Interface
Support 8 -bit video (ITU 656) format input
Support 16 -bit video (ITU 601) format input (optional)
Built -in YUV to RGB color space converter & de-interlace
DVI Compliant Digital Input Interface (optional)
Single l ink on-chip TMDS receiver
Support to 165Mhz with long cable
Adaptive algorithm for TMDS capability
Data enable only mode support
High -Bandwidth Digital Content Protection (HDCP 1.1) (optional only in H version)
Enhanced protection of HDCP se cret key (optional only in H version)
Auto Detection /Auto Calibration
Input format detection
Compatibility with standard VESA mode and support user-defined mode
Smart engine for Phase/Image position/Color calibration
Scaling
Fully programmable zoom ratios
Independent horizontal/vertical scaling
Advanced zoom algorithm provides high image quality
Sharpness/Smooth filter enhancement
Support non -linear scaling from 4:3 to 16:9 or 16:9 to 4:3
Vivid Color.
Dynamic Contrast Control (DC C)
Independent Color Management (ICM)
True 10 bits color processing engine
sRGB compliance
Advanced Dithering logic for 18 -bit panel color depth enhancement
Dynamic overshoot -smear canceling engine
Brightness and contrast control
Progr ammable 10-bit gamma support
Output Interface
Fully programmable display timing generator
Flexible data pair swapping for easier system design.
Programmable TCON function support
Multi -output interface (RSDS/LVDS/TTL)on single PCB
Spread -Spectrum DPLL to reduce EMI
Fixed Last Line output for perfect panel capability
Host Interface
Support MCU serial/parallel bus interface.
Support MCU dual edge data latch.
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