PTN3355 is a DisplayPort to VGA adapter with an integrated 1 : 2 VGA switch optimizedprimarily for motherboard applications, to convert a DisplayPort signal from the chip set toan analog video signal that directly connects to the VGA connector. PTN3355 integrates aDisplayPort receiver, a high-speed triple video digital-to-analog converter and 1 : 2 VGAswitch that supports a wide range of display resolutions, for example, VGA to WUXGA. PTN3355 supports either one or two DisplayPort lanes operating at either2.7 Gbit/s or 1.62 Gbit/s per lane.
PTN3355 supports I²C-bus over AUX per DisplayPort standard, and bridges theVESA DDC channel to the DisplayPort Interface.
PTN3355 is powered from a 3.3 V power supply and consumes approximately 200 mW ofpower for video streaming in WUXGA resolution and 410 μW of power in Low-powermode. The VGA output is powered down when there is no valid DisplayPort source databeing transmitted. PTN3355 also aids in monitor detection by performing load sensing onRGB lines and reporting sink connection status to the source.
Feature
VESA-compliant eDP extensions
DDC channel output
Analog video output
VSIS 1.2 compliance for supported video output modes
Analog RGB current-source outputs
3.3 V VSYNC and HSYNC outputs
Pixel clock up to 240 MHz
Triple 8-bit Digital-to-Analog Converter (DAC)
Direct drive of double terminated 75 load with standard 700 mV (peak-to-peak)signals
Integrated 1 : 2 VGA switch
General features
Supports firmware upgradability through ‘Flash-over-AUX’ scheme for Windows
Supports firmware upgradability through I²C-bus interface
Monitor presence detection through load detection scheme. Connection/disconnectionreported via HPD IRQ and DPCD update
Wide set of display resolutions are supported:
1920 x 1440, 60 Hz, 18 bpp, 234 MHz pixel clock rate
2048 x 1152, 60 Hz (reduced blanking), 24 bpp, 162 MHz pixel clock rate
2048 x 1536, 50 Hz (reduced blanking), 24 bpp, 167.2 MHz pixel clock rate
WUXGA: 1920 x 1200, 60 Hz, 18 bpp, 193 MHz pixel clock rate
WUXGA: 1920 x 1200, 60 Hz (reduced blanking), 24 bpp, 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: 640x 480, 60 Hz, 25 MHz pixel clock rate
Any resolution and refresh rates are supported from 25 MHz up to 180 MHz pixelclock rate at 24 bpp, or up to 240 MHz pixel clock rate at 18 bpp
Bits per color (bpc) supported:
All VGA colorimetry formats (RGB) supported
Power modes:
Supports slave I²C-bus interface for host debugging and configuration
Supports flexible choice of timing reference:
On-board oscillator with external crystal, ceramic resonator
Different frequencies supported: 25 MHz, 27 MHz, 33 MHz
ESD protection: 7.5 kV HBM
Single power supply (3.3 V) for easy integration in the platforms
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
Target Applications
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
