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Weltrend Semiconductor, Inc. WT8801T Specification
WT8801T Specification
Ver. 1.0
09/1/2003
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1. Features
Digital Input Support
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Weltrend Semiconductor, Inc. WT8801T Specification
24 bit RGB input 8/16 bit YUV 4:2:2 Video input support Built-in YUV to RGB color space converter DDWG/DVI1.0 compliant
High Quality Scaling Engine
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Fully programmable zoom ratios Independent Horizontal/Vertical scale High quality scalering down capability, for 1152 & 1280 to 1024 down scale Advanced de-interlacing algorithm for digital YUV video Enhanced sharpness filter for better text support Spatial color dithering algorithm (random mode or fuzzy mode) to 16.7 million color
Digital Brightness/Contrast adjustment
* * * *
Output Panel Support
Single (18/24) or Dual (36/48) pixel output Support Multiple TFT LCD Panel Support VGA/SVGA/XGA/SXGA display resolution Programmable output driving capacity for 8mA/16mA/24mA
Build-in Programmable Panel Timing Controller (TCON)
* * * * * * * * Direct connect to commercial row/column driver IC Support dual bus dual port, single bus single/dual port configurations Independent data swapping of even/odd pixels, red and blue pixels, and MSB and LSB
OSD and Gamma Correction Support
Fully programmable OSD Engine Downloadable font storage for internal OSD Support 384 plus 128 Multi-Color fonts User programmable 10-bit Gamma table Support sRGB for color management
On-chip Micro-controller
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Requires no external micro-controller 12 general purpose inputs/outputs (GPIO) available Build in IR control registers for IR function. Build in 64k flash memory for program and 32k flash memory for OSD font
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Weltrend Semiconductor, Inc. WT8801T Specification
In System Programming (ISP)
Display Synchronization
* * * Advanced Input mode detection Automatic Input Edge Adjustment Automatic Input Phase Calibration
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Low System Cost Solution
Plug and Display, support VGA mode up to 1280x1024 @ 75Hz 2-wire I2C serial interface for EEPROM and Micro-controller Glue less interface to external TMDS chip Power Management support
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Electrical/Physical Specification
3.3V pad power supply with 5V I/O tolerant, 2.5V core power supply 160 pin PQFP Package
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2. Overview
Weltrend Semiconductor, Inc. WT8801T Specification
The WT8801T LCD (Liquid Crystal Display) Monitor Controller is an input format converter for the TFT-LCD Panels or LCD-TV applications. It accepts analog RGB signals from PC, YUV from digital video decoder or digital RGB graphics from PanelLink TMDS receiver and transforms these signals to TFT-LCD panel to display. The WT8801T performs image scaling on 24bit RGB or YUV data stream and feeds these scaled pixels to the output LCD panel. When displaying the image, instead of using external memory chips for scaling and temporary storage, the chip is using embedded line buffers. This chip also embedded MCU and flash memory such that the total system cost can be kept to minimum. In order to provide the plug-n-display, the chip also performs functions like automatic input mode detection and automatic phase calibration. This is designed to keep the sampling clock of ADC is synchronized with the incoming data so that the final image in the LCD panel is free of distortion. The chip also provides the circuitry for contrast / brightness adjustment and gamma tables for intensity correction.
Figure 1 shows a system configuration for the chip.
WT8801T System Block Diagram
VGA
ADC
DFP/DVI
Digital (TMDS/LVDS) RGB
WT8801T
TFT LCD Panel
Video
Video Decoder YUV
Key Pad
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Weltrend Semiconductor, Inc. WT8801T Specification
3. Signal Definitions
3.1 Pin Listing & Description
Symbol
GND RESETB OVR OVG OVB OVI OVFB TMS0 GND N/C V25 GND N/C V25 GND N/C TMS1 PANEL_R0 PANEL_R1 PANEL_R2 PANEL_R3 PANEL_R4 PANEL_R5 V25 V33 PANEL_R6 PANEL_R7 PANEL_G0 PANEL_G1 PANEL_G2 PANEL_G3 PANEL_G4 PANEL_G5 SDA SCL V25 PANEL_G6 V33 PANEL_G7 PANEL_B0
Pin No
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
I/O
G I I I I I I I G N/C P G N/C P G N/C I O O O O O O P P O O O O O O O O I/O I P O P O O
Description
System Ground System Reset signal (Active Low) External OSD Red signal External OSD Green signal External OSD Blue signal External OSD Intensity signal Overlay enable from external OSD chip Test Mode Selection 0, N/C in Normal Mode System Ground No Connection +2.5V Power Supply System Ground No Connection +2.5V Power Supply System Ground No Connection Test Mode Selection 1, N/C in Normal Mode Panel Red Output Data Bit 0 Panel Red Output Data Bit 1 Panel Red Output Data Bit 2 Panel Red Output Data Bit 3 Panel Red Output Data Bit 4 Panel Red Output Data Bit 5 +2.5V Power Supply +3.3V Power Supply Panel Red Output Data Bit 6 Panel Red Output Data Bit 7 Panel Green Output Data Bit 0 Panel Green Output Data Bit 1 Panel Green Output Data Bit 2 Panel Green Output Data Bit 3 Panel Green Output Data Bit 4 Panel Green Output Data Bit 5 I2C Bus Data Line I2C Bus Clock Line +2.5V Power Supply Panel Green Output Data Bit 6 +3.3V Power Supply Panel Green Output Data Bit 7 Panel Blue Output Data Bit 0
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Symbol
GND PANEL_B1 PANEL_B2 PANEL_B3 PANEL_B4 PANEL_B5 PANEL_B6 PANEL_B7 VGA_HS V33 PDE PVS PHS PCK N/C PANEL_R8 PANEL_R9 PANEL_R10 V25 PANEL_R11 PANEL_R12 PANEL_R13 V33 PANEL_R14 PANEL_R15 PANEL_G8 PANEL_G9 PANEL_G10 PANEL_G11 PANEL_G12 PANEL_G13 PANEL_G14 PANEL_G15 V33 PANEL_B8 PANEL_B9 PANEL_B10 PANEL_B11 PANEL_B12 PANEL_B13
Weltrend Semiconductor, Inc. WT8801T Specification
I/O
G O O O O O O O I P O O O O N/C O O O P O O O P O O O O O O O O O O P O O O O O O
Pin No
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
Description
System Ground Panel Blue Output Data Bit 1 Panel Blue Output Data Bit 2 Panel Blue Output Data Bit 3 Panel Blue Output Data Bit 4 Panel Blue Output Data Bit 5 Panel Blue Output Data Bit 6 Panel Blue Output Data Bit 7 VGA Horizontal Sync +3.3V Power Supply Panel Data Enable Panel Vertical Sync Panel Horizontal Sync Panel Clock No Connection Panel Red Output Data Bit 8 Panel Red Output Data Bit 9 Panel Red Output Data Bit 10 +2.5V Power Supply Panel Red Output Data Bit 11 Panel Red Output Data Bit 12 Panel Red Output Data Bit 13 +3.3V Power Supply Panel Red Output Data Bit 14 Panel Red Output Data Bit 15 Panel Green Output Data Bit 8 Panel Green Output Data Bit 9 Panel Green Output Data Bit 10 Panel Green Output Data Bit 11 Panel Green Output Data Bit 12 Panel Green Output Data Bit 13 Panel Green Output Data Bit 14 Panel Green Output Data Bit 15 +3.3V Power Supply Panel Blue Output Data Bit 8 Panel Blue Output Data Bit 9 Panel Blue Output Data Bit 10 Panel Blue Output Data Bit 11 Panel Blue Output Data Bit 12 Panel Blue Output Data Bit 13
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Weltrend Semiconductor, Inc. WT8801T Specification
Symbol
GND PANEL_B14 PANEL_B15 V33 INPUT_B7 INPUT_B6 INPUT_B5 INPUT_B4 INPUT_B3 INPUT_B2 INPUT_B1 INPUT_B0 V33 TCON0 TCON1 TCON2 TCON3 TCON4 TCON5 TCON6 TCON7 TCON8 V33 TCON9 TCON10 TCON11 TCON12 TCON13 TCON14 TCON15 PWM1 V25 INPUT_G7 INPUT_G6 INPUT_G5 INPUT_G4 INPUT_G3 INPUT_G2 INPUT_G1 INPUT_G0
Pin No
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
I/O
G O O P I I I I I I I I P O O O O O O O O O P O O O O O O O O P I I I I I I I I
Description
System Ground Panel Blue Output Data Bit 14 Panel Blue Output Data Bit 15 +3.3V Power Supply Input Blue Data Bit 7 Input Blue Data Bit 6 Input Blue Data Bit 5 Input Blue Data Bit 4 Input Blue Data Bit 3 Input Blue Data Bit 2 Input Blue Data Bit 1 Input Blue Data Bit 0 +3.3V Power Supply Timing Controller Output Bit 0 Timing Controller Output Bit 1 Timing Controller Output Bit 2 Timing Controller Output Bit 3 Timing Controller Output Bit 4 Timing Controller Output Bit 5 Timing Controller Output Bit 6 Timing Controller Output Bit 7 Timing Controller Output Bit 8 +3.3V Power Supply Timing Controller Output Bit 9 Timing Controller Output Bit 10 Timing Controller Output Bit 11 Timing Controller Output Bit 12 Timing Controller Output Bit 13 Timing Controller Output Bit 14 Timing Controller Output Bit 15 Pulse Width Modulation Output 1 +2.5V Power Supply Input Green Data Bit 7 Input Green Data Bit 6 Input Green Data Bit 5 Input Green Data Bit 4 Input Green Data Bit 3 Input Green Data Bit 2 Input Green Data Bit 1 Input Green Data Bit 0
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Symbol
GND V33 INPUT_R7 INPUT_R6 INPUT_R5 INPUT_R4 INPUT_R3 INPUT_R2 INPUT_R1 INPUT_R0 PWM2 GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 V33 GPIO6 GPIO7 GPIO8 GPIO9 GPIO10 GPIO11 VGA_CK D_HS N/C DDC_SDA DDC_SCL V33 N/C OSC_IN OSC_OUT V25 D_VS VGA_DE TV_CK TV_HS TV_VS VGA_VS
Weltrend Semiconductor, Inc. WT8801T Specification
I/O
G P I I I I I I I I O I/O I/O I/O I/O I/O I/O P I/O I/O I/O I/O I/O I/O I I N/C I/O I P N/C I O P I I I I I I
Pin No
121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160
Description
System Ground +3.3V Power Supply Input Red Data Bit 7 Input Red Data Bit 6 Input Red Data Bit 5 Input Red Data Bit 4 Input Red Data Bit 3 Input Red Data Bit 2 Input Red Data Bit 1 Input Red Data Bit 0 Pulse Width Modulation Output 2 General Purpose Input/Output Bit 0 General Purpose Input/Output Bit 1 General Purpose Input/Output Bit 2 General Purpose Input/Output Bit 3 General Purpose Input/Output Bit 4 General Purpose Input/Output Bit 5 +3.3V Power Supply General Purpose Input/Output Bit 6 General Purpose Input/Output Bit 7 General Purpose Input/Output Bit 8 General Purpose Input/Output Bit 9 General Purpose Input/Output Bit 10 General Purpose Input/Output Bit 11 VGA Input Clock Digital Input Horizontal Sync No Connection DDC I2C Bus Data Output, also as ISP I2C Bus Data Input/Output DDC I2C Bus Clock Input, also as ISP I2C Bus Clock Input +3.3V Power Supply No Connection X'tal Osc Input X'tal Osc Output +2.5V Power Supply Digital Input Vertical Sync VGA Input Data Enable Video (TV) Input Clock Video (TV) Input Horizontal Sync Video (TV) Input Vertical Sync VGA Input Vertical Sync
Note: All input pins have internal pull down (100K)
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3.2 Pin Diagram
Weltrend Semiconductor, Inc. WT8801T Specification
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
VGA_VS TV_VS TV_HS TV_CK VGA_DE D_VS V25 OSC_OUT OSC_IN N/C V33 DDC_SCL DDC_SDA N/C D_HS VGA_CK GPIO11 GPIO10 GPIO9 GPIO8 GPIO7 GPIO6 V33 GPIO5 GPIO4 GPIO3 GPIO2 GPIO1 GPIO0 PWM2 INPUT_R0 INPUT_R1 INPUT_R2 INPUT_R3 INPUT_R4 INPUT_R5 INPUT_R6 INPUT_R7 V33 GND
160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121
GND RESETB OVR OVG OVB OVI OVFB TMS0 GND N/C V25 GND N/C V25 GND N/C TMS1 PANEL_R0 PANEL_R1 PANEL_R2 PANEL_R3 PANEL_R4 PANEL_R5 V25 V33 PANEL_R6 PANEL_R7 PANEL_G0 PANEL_G1 PANEL_G2 PANEL_G3 PANEL_G4 PANEL_G5 SDA SCL V25 PANEL_G6 V33 PANEL_G7 PANEL_B0
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WT8801T
QFP160
INPUT_G0 INPUT_G1 INPUT_G2 INPUT_G3 INPUT_G4 INPUT_G5 INPUT_G6 INPUT_G7 V25 PWM1 TCON15 TCON14 TCON13 TCON12 TCON11 TCON10 TCON9 V33 TCON8 TCON7 TCON6 TCON5 TCON4 TCON3 TCON2 TCON1 TCON0 V33 INPUT_B0 INPUT_B1 INPUT_B2 INPUT_B3 INPUT_B4 INPUT_B5 INPUT_B6 INPUT_B7 V33 PANEL_B15 PANEL_B14 GND
120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
GND PANEL_B1 PANEL_B2 PANEL_B3 PANEL_B4 PANEL_B5 PANEL_B6 PANEL_B7 VGA_HS V33 PDE PVS PHS PCK N/C PANEL_R8 PANEL_R9 PANEL_R10 V25 PANEL_R11 PANEL_R12 PANEL_R13 V33 PANEL_R14 PANEL_R15 PANEL_G8 PANEL_G9 PANEL_G10 PANEL_G11 PANEL_G12 PANEL_G13 PANEL_G14 PANEL_G15 V33 PANEL_B8 PANEL_B9 PANEL_B10 PANEL_B11 PANEL_B12 PANEL_B13
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