The PTN3393 is a DisplayPort to VGA adapter IC designed to connect a DisplayPortsource to a VGA sink. The PTN3393 integrates a DisplayPort receiver and a high-speedtriple video digital-to-analog converter that supports display resolutions from VGA toWUXGA. The PTN3393 supports either one or two DisplayPort v1.1a lanesoperating at either 2.7 Gbit/s or 1.62 Gbit/s per lane. The PTN3393 has ‘Flash-over-AUX’capability enabling simple firmware upgradability in the field.
The PTN3393 supports I²C-bus over AUX per DisplayPort v1.1a specification,and bridges the VESA DDC channel to the DisplayPort Interface.
The PTN3393 is designed for single supply and minimizes application costs. It can bepowered directly from the DisplayPort source side 3.3 V supply without a need foradditional core voltage regulator. The VGA output is powered down when there is no validDisplayPort source data being transmitted. The PTN3393 also aids in monitor detectionby performing load sensing and reporting sink connection status to the source.
Feature
- Main Link: 1-lane and 2-lane modes supported:
- HBR (High Bit Rate) at 2.7 Gbit/s per lane
- RBR (Reduced Bit Rate) at 1.62 Gbit/s per lane
- BER (Bit Error Rate) better than 10-9
- Down-spreading SSC (Spread Spectrum Clocking) supported
- 1 MHz AUX channel:
- Supports native AUX CH syntax
- Supports I²C-bus over AUX CH syntax
- Hot Plug Detect (HPD) signal to the source
- Cost-effective design optimized for VGA application
- Supports 100 kbit/s I2C-bus speed, declared in DPCD register:
- Support of I²C-bus speed control by DisplayPort source via DPCD registers,facilitating use of longer VGA cables
- I²C Over Aux feature facilitates full support of MCCS, DDC-CI, and DDC protocols
- VSIS 1.2 compliancefor all supported video output modes
- Analog RGB current-source outputs
- VSYNC and HSYNC outputs
- Pixel clock up to 240 MHz
- Triple 8-bit Digital-to-Analog Converter (DAC)
- Direct drive of double terminated 75 Ω load with standard 700 mV (peak-to-peak)signals
- Supports ‘Flash-over-AUX’ field upgradability
- Monitor presence detection. Connection/disconnection reported via HPD IRQ andDPCD update
- All display resolutions from VGA to WUXGA are supported1, including e.g.:
- WUXGA: 6 bits, 1920 X 1200, 60 Hz, 193 MHz pixel clock rate
- WUXGA: 1920 X 1200, 60 Hz, reduced blanking, 154 MHz pixel clock rate
- UXGA: 1600 X 1200, 60 Hz, 162 MHz pixel clock rate
- SXGA: 1280 X 1024, 60 Hz, 108 MHz pixel clock rate
- XGA: 1024 X 768, 60 Hz, 65 MHz pixel clock rate
- SVGA: 800 X 600, 60 Hz, 40 MHz pixel clock rate
- VGA: 640 X 480, 60 Hz, 25 MHz pixel clock rate
- Any resolution and refresh rates are supported up to 8 bit color
- Bits per color (bpc) supported:
- 6, 8 bits supported
- 10, 12, 16 bits supported by truncation to 8 MSBs
- All VGA colorimetry formats (RGB) supported
- Power modes:
- Active-mode power consumption:
- ~600 mW at UXGA / 162 MHz pixel clock
- ~500 mW at SXGA / 108 MHz pixel clock
- ~40 mW at Low-power mode or before link training started
- Active-mode power consumption:
- On-board crystal oscillator for use with external 27 MHz crystal
- ESD protection: 7 kV ESD HBM JEDEC
- 3.3 V ±10 % power supply
- Commercial temperature range: 0 °C to 85 °C
- 40-pin HVQFN, 6 mm X 6 mm X 0.85 mm (nominal); 0.5 mm pitch; lead-free package
- Dongle PC accessory:
- Dongle connected to PC DisplayPort output and connected to RGB monitor viaVGA cable
- PTN3393 is powered by the DP_PWR pin on the DisplayPort connector
- Desktop and notebook computers
- Notebook docking stations
