描述 Description

PTN3356 is a flash-based DisplayPort to VGA adapter optimized primarily for motherboardapplications, to convert a DisplayPort signal from the chip set to an analog videosignal that directly connects to the VGA connector. PTN3356 integrates a DisplayPortreceiver, a high-speed triple video digital-to-analog converter that supports a widerange of display resolutions, for example, VGA to WUXGA.
PTN3356 supports two DisplayPort lanes operating at either 2.7 Gbit/s or 1.62 Gbit/s perlane.
PTN3356 supports I2C-bus over AUX per DisplayPort standard, and bridges theVESA DDC channel to the DisplayPort Interface.
PTN3356 is powered from a 3.3 V power supply and consumes approximately 200 mW of powerfor video streaming in WUXGA resolution and 410 μW of power in Low-power mode. The VGAoutput is powered down when there is no valid DisplayPort source data being transmitted.PTN3356 also aids in monitor detection by performing load sensing on RGB lines andreporting sink connection status to the source.

特性 Features

VESA-compliant DisplayPort V1.4 converterMain 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
DisplayPort Link down-spreading supported
1 MHz AUX channelSupports native AUX CH syntax
Supports I2C-bus over AUX CH syntax
Active HIGH Hot Plug Detect (HPD) signal to the source
VESA-compliant eDP extensionsSupports Alternate Scrambler Seed Reset (ASSR)
Supports Alternate Enhanced Framing mode - Enhanced Framing
DDC channel outputI2C-Over-AUX feature facilitates support of MCCS, DDC/CI, and DDCprotocols
Analog video outputVSIS 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 Ω load with standard 700 mV (peak-to-peak)signals
General featuresMonitor presence detection through load detection scheme.Connection/disconnection reported 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 clockrate
2048 x 1536, 50 Hz (reduced blanking), 24 bpp, 167.2 MHz pixel clockrate
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 clockrate
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 from 25 MHz up to 180 MHzpixel clock rate at 24 bpp, or up to 240 MHz pixel clock rate at 18bpp
Bits per color (bpc) supported6, 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: ~200 mW at WUXGA, 1920 x 1200, 60 Hz (18bpc)
410 μW at Low-power mode
Supports flexible choice of timing reference:On-board oscillator with external crystal, ceramic resonator
Different frequencies supported: 24 MHz, 25 MHz, 27 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
32-pin HVQFN, 5 mm x 5 mm x 0.85 mm (nominal); 0.5 mm pitch; lead-freepackage

應用 Application

Notebook computers, tablets and desktop PCs
Dongles, adapters, docking stations