Display Port (DP_AUX)

The DP_Aux channel is used to detect the connection, configuration and status of the Display Port source. The Display Port is the digital display interface specified in the VESA standard.

Characteristics:

• The TravelBus series supports DP-Aux without additional DP-Aux adapterBuy DP_Aux adapter from Acute

Description:

The TB2016 series features a differential signal input that can correctly measure the DP_AUX channel and has full DPCD bit resolution, which shortens debug time and stacks the oscilloscope while observing analog and digital signals.

DSO waveform - Not suitable for general logic analyzer measurements

TB2016 Analyzer Chart

Measuring DP_Aux with TravelBus (TB2000 series)

TravelBus Pin Definition

DP_Aux - Differenzieller Signal adapter

Acute logic analyzers with DP_Aux adapter (e.g. MSO)

Cascading multiple DP_Aux adapters

To measure DP_Aux & CC pin of USB Type-C, a USB Type-C adapter can be purchased from Acute.

USB Type-C Adapter (including DP_AUX and USB-PD): Adaptor for USB3.0 Type-C CC1/CC2, SBU1/SBU2 signals.

*It contains both SBU and CC pin contacts

*For DP AUX differential signal measurement

MIPI D-PHY Interface & Analysis

MIPI D-PHY℠ belongs to the physical layer working group in the MIPI protocol. D-PHY provides DSI (Display Serial Interface) and CSI (Camera Serial Interface).

MIPI D-PHY℠ connects megapixel cameras and high-resolution displays to an application processor. It is a clock-synchronous data link that offers higher noise immunity and higher jitter tolerance. MIPI D-PHY also provides low-latency conversion between high-speed mode and low-power mode.

MIPI D-PHY is suitable for cameras and panels in smartphones because it is a flexible, fast, low-power and low-cost solution. It is also suitable for many other applications such as drones, super-large tablets, surveillance cameras and industrial robots. In addition, with the support of proprietary bridge solutions, D-PHY is also used in the automotive industry, such as camera systems, collision avoidance radars, in-vehicle infotainment systems and dashboard displays.

Due to the master-slave relationship of the data link transceiver, the operation of the data link and the available data rate are asymmetric. The asymmetric design significantly reduces the complexity of the data link and is very suitable for display and camera housings with one main data transmission direction. Bidirectional and half-duplex operation are optionally possible.

Characteristics:

• Supports D-PHY V1.2, up to 2.0Gbps per lane, 1   4 lanesDisplay of CSI-2 1.3 or DSI 1.3 packet data in a table, including DCS 1.3 command analysis for DSIComplete capture of data from Low Power Mode Initialize to High Speed Mode processSupports data filter to ignore unnecessary image data to save storage spaceSupports data search functionSupports ECC/CRC Packet Error Counting and DisplayDisplay of DSI(CSI) image data, including RGB, YCbCr, RAW format or compressed DSC packets, and count the porch of raw data.D-PHY command statistics include the number of packets, individual commands, different data lengths and errors.TE (Tearing Effect) Channel Detection

Solution:

BusFinder with MIPI D-PHY solution (Way Station and other components). Supports MIPI D-PHY 1.2

Report:

Image Recovery:

PIN connections:

* Suggestion：The welding line MUST be < 5mm. It is strongly recommended to weld a 100Ω resistor to the test object and connect it to the end tip with a 3cm lead.