[DP]displaport Male To Female Converter Converter Large Line Of Products To Prevent EMI Electromagnetic Interference-Elegant Series

Detailed Description:

{This series of product focus: all through EMI electromagnetic interference test; internal metal layer shielding assembly, fully support hot swap}
{What is the use of anti-EMI? Simple example: When the DP cable is in contact with the display device, there will be a slight spark without EMI, and there will be no spark when the EMI test is passed}

DP to VGA/DVI/HDMI function test report form
Used in ATI firepro 2260,
            Ati firepro v3750, v5700, v7750, v8700, v8750
            Ati radeon HD5770, HD 5750, HD 5850, HD 5870 Eyefinity, HD 5970, hd 5950
            Nvidia quadro nvs 295, nvs 420, nvs 450, nvs160m
            Nvidia quadro fx 580, fx 1800, fx 3800, fx 4800, fx 5800.fx370m, fx770m, quadro 3100m
            Mac pro geforce gt 120 ,gtx 280
            Matrox m9148, m9138, m9188, m9128, triphead2go dp edtion
            Intel GMA X4500, Intel GL40, q43, q45
            HP HP Probook 5310m (VT214PA), EliteBook 8440p, 8540w, 2540p, probook 6540b, 6440b, AS615AA
                   Hp t5740, t5745, compaq 8000, 8080 elite; multiseat ms6000, z200,
            Apple apple MACbook pro 466, macbook air.MB466; MB467; MB470; MB471; MC026; MB604;
MB990; MB991; MC118, MB985; MB986
            Lenovo Zhaoyang K46A, ThinkPad T500

NOTE:
1. Full support for hot swap: including boot status to enter the system, from DP to vga to DP to dvi.
{Apple notebook set dual screen shortcuts}
Apple Key + F1 Detects the display in Mac OS X.
Apple Key + F2 Switches the screen to display content in Mac OS X.
{Common brand laptop and projector image switch dual screen display mode function shortcuts}

IBM FN+F7: Screen Switching (useful only if you have an external monitor)
Lenovo Leovo FN+F3: display switching
ASUS ASUS FN+F10: Switching display
Sharp SHARP FN+F3: Display Switching (FN+F5)
Dell Dell FN+F8: Switching the display
Samsung SAMSUNG FN+F4: Switch display (P25: FN+F7)
HP HP FN+F4: Switching the display
Toshiba TOSHIBA FN+F5: Switching display
NEC FN+F3: Switch display
 

• With 3 or more monitors, you must use the Windows 7 operating system.

• Only 2 monitors can be supported in the Windows XP operating system.
• Supports up to 2 HDMI outputs. Active ADP adapters approved by AMD or our company must be used.

DisplayPort to DVI / HDMI signal conversion principle
Since HDMI and DVI already existed when DisplayPort was introduced, DisplayPort source devices must interoperate with existing HDMI and DVI Sink devices. To meet this requirement, virtually all DisplayPort data source devices are ‘dual-mode’ devices that support DisplayPort (direct connection) and support DVI/HDMI through a cheap cable adapter (‘dongle’).
This will allow desktop or laptops to migrate to only one output connector type while still supporting legacy displays or digital TV connections. Adding HDMI functionality to semiconductor devices in DisplayPort data source devices has not increased system cost. Since the electrical interface is shared, there is no additional hardware cost added.
For DisplayPort dual-mode devices, you need to identify an icon in the DisplayPort interface section (as shown in Figure 1), indicating that the device supports not only DisplayPort, but also DVI 1.0 or HDMI. In this icon, the ‘++’ logo and the DisplayPort logo indicate the ability of the device to support dual-mode signals.

Figure 1. DisplayPort Dual Mode Device Logo

DisplayPort is a trademark of the Video Electronics Standards Association (VESA)
DP++: Dual-Mode DisplayPort
TMDS: Transition-Minimized Differential Signaling
DVI (Digital Visual InteRFace) is a trademark of Digital Display Working Group (DDWG)
HDMI (High Definition Multimedia Interface) is a trademark of HDMI Licensing, LLC

 Figure 2. DisplayPort to DVI/HDMI Adapter

The cable adapter is set at the DisplayPort data source, as shown in Figure 2. The internal structure and working principle of the cable adapter of the DisplayPort data source (hereinafter referred to as the source adapter) are shown in Figure 3. 

Figure 3. Internal structure and working principle of the source adapter

The source adapter should contain the following electrical characteristics:
1). A circuit for voltage conversion of differential signals;
2). For the buffer circuit that displays the DDC signal of the data channel;
3). Pull-up resistors for displaying data channel DDC clock and data signals;
4). Pull-up resistor for the 13-pin signal of the DisplayPort interface for cable adapter detection;
5). Pull-up resistor for 14-pin signal of DisplayPort interface for HDMI cable adapter detection (only for HDMI adapter);
6). The boost converter generates DDC_5V from the source DP_PWR 3.3V (if Vbias_RX is not 3.3V, it needs to generate the voltage required by Vbias_RX);
7). 1 DisplayPort 1.1 connector;

Note 1: The terminal bias voltage Vbias_Rx of the voltage converter is not necessarily +3.3V. If Vbias_Rx is not +3.3V, the adapter must generate the voltage required by Vbias_Rx itself.
Note 2: The 26kΩ pull-up resistor on the 14-pin of the interface is only required for adapters with HDMI signals. For DVI signal adapters, the interface 14 pins need to be left floating. A dual-mode source device that supports HDMI mode has a pull-down resistor of more than 5MΩ on the 14-pin to identify the pull-up resistor in the adapter. It should be noted that as part of the CEC protocol, the HDMI device may pull the 14-pin voltage low.
When a source adapter is detected by the dual-mode source device, the dual-mode device automatically reconfigures the pin definition of the DisplayPort interface to accommodate the DVI/HDMI signal mode. The mapping relationship between the pins is shown in Table 1.

Table 1. Mapping between DisplayPort and DVI/HDMI in dual-mode devices 

For a dual mode source device, the voltage value on the monitor interface 13 pin is optional. Normally, the dual-mode source device will attempt to perform an AUX CH read first. If the read operation fails, the dual-mode source device performs a DDC read and write operation to detect if the adapter is connected.