CTB MIPI CPhy/DPhy Termination Board Data Sheet & User Manual. June Rev 1.2

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1 CTB MIPI CPhy/DPhy Termination Board Data Sheet & User Manual June Rev 1.2

2 CTB MIPI C-Phy/D-Phy Termination Board 1.0 General: The Termination Board (TB) is a product that properly terminates a MIPI CPhy or DPhy link in response to the received protocol during high speed data transmission. It releases the termination when not in high speed transmission mode. It is used in cases where a transmitter is being evaluated and there is no receiver available in the system. The TB acts as the required active termination. It does not save or forward any data received. The TB supports up to 4 CPhy lanes or 4 DPhy lanes and a DPhy Clock lane. The selection between CPhy and DPhy is made by the user via a DIP switch. It is powered by a USB link or power supply. There are some heartbeat leds on the board that will not be further described. 2.0 Requirements: The unit must be powered by a USB link or power supply designed to generate USB power.

3 3.1 Configuration switches and modes The board is equipped with a DIP-style 8-switch array that is used to select various configurations. The switch is labeled SW1. If the reader refers to the first page of this manual, the switch can be seen in the lower right corner of the board. The switches are in the off position when in the down position. With all the switches defaulted in the down position, the mode is CPhy, normal termination. The switches are defined as follows starting from the rightmost switch and working left: SW8 DPhy mode when On (up), CPhy mode when off (down) SW7 Never Terminate mode when On (up), normal mode when off (down) SW6 Always Terminate mode when On (up), normal mode when off (down) SW5-SW1 reserved for future use. SW8 should be set depending if the system under test is CPhy or DPhy. SW7 can be used to force the board to ignore the incoming signals and never apply the termination. This can be useful in some debugging situations. SW6 can be used to force the board to always terminate the incoming signal. It should be noted that if used during active signaling, whenever the LP signals are different from one another, the signals will be severely distorted. This mode can be useful in certain diagnostic situations or whenever measuring the input impedance of the board when connected to a non-mipi signal source It should be noted that SW7 (Never Terminate) always has priority over SW6 (Always Terminate). 3.2 CPhy Connections Follow the silkscreen! 3.3 DPhy Connections DPhy data lane connections are made to the Dx+ and Dx- SMAs (also labeled A and C ). The B SMA is left open. DPhy clock lane connections are made to the CLK+ and CLK- SMAs.

4 4.0 Operation and Usage In CPhy and DPhy, the termination is applied on a lane-by-lane basis, depending on the signal levels and sequence and the position of the configuration switches. No lane depends on correct signaling on any other lane. Connect the TB to the link under test. Connect a USB cable to a system capable of providing USB power.

5 5.0 Electrical specification for the Termination Board Characteristic Specification Notes Data Rate 2.5Gsps/2.5Gbps Nominal is 4.5 Gsps/4.5Gbps 1 HS mode termination resistance 50 Ω nominal, single ended 100 Ω nominal, differential Power Requirement Less than 1.5 watts 5 Vdc, 270mA, via USB Weight ~120grams approximate, without USB cable Overall Dimensions 240mm x 85mm x 20mm Approximate, with nylon corner posts For more information contact: The Moving Pixel Company 4905 SW Griffith Drive Suite 106 Beaverton, Oregon information@movingpixel.com phone PST 1 Operation to 4.5 Gbps/4.5Gsps is typical, however return loss (s22) starts to degrade electrical performance above 3.0Gbps/3.0Gsps. Rev E of this board (to be released in July 2018) should have much better return loss performance at up to 4.5Gbps/4.5Gsps