With its own powerful functions, USB Type-C, with the strong promotion of Apple, Intel, Google and other manufacturers, will definitely trigger a revolution in the USB interface and will positively affect all aspects of our daily life. Type C is a new generation  Physical interface standards. Now, partners often discuss a question. Do USB Type-C devices need CC logic to detect and control E-MARK chips? Many partners will ask, what we said is TYPE-C with E  -What exactly is a -MARK chip?

Sinodec Industrial Co., Ltd., as a Chinese manufacturer of USB charger cable, can provide customized USB cable according to customer needs.

Square view: If you connect a simple adapter, a USB flash drive, and a mouse, you must bring a TYPE-C chip. Is it redundant?

Opposition: As a new-generation physical interface standard, TYPE-C must reflect the distinctive high-end atmosphere. All USB PD role definitions and role switching must be performed through CC logic and communication in the USB TYPE-C protocol.  achieve.

To answer this question correctly, we have to start with the basic concepts and start our learning journey.

Know the advantages of USB Type-C data cable

USB TYPE C supports forward and reverse insertion

Maximum transmission speed: 10G

The TYPE-C interface can achieve a transmission power of 100W through the E-MARK chip.

USB TYPE- C is compatible with USB2.0 / 3.0 / 3.1 interface, and automatically recognizes the voltage and current required by electronic products through E-MARK chip technology, and the output current is 2A-5A.

The TYPE-C interface has a slim profile and is suitable for various mobile phones, tablets and ultrabooks.

Twisted pair support: coaxial / twisted pair

Know the technical terms related to TYPE C

CC (Configuration Channel): Configuration channel. This is a new key channel in USB Type-C. Its role is to detect USB connection, detect positive and negative insertion, and establish and manage data and VBUS connection between USB devices.

USB PD (USB Power Delivery): PD is a communication protocol. It is a new power and communication connection method. It allows USB devices to transmit power up to 100W (20V / 5A), and it can change the port  Attributes, can also make the port switch between DFP and UFP, it can also communicate with the cable to get the attributes of the cable.

Electronically Marked Cable: A USB Type-C active cable encapsulated with an E-Marker chip. DFP and UFP can read the properties of the cable using the PD protocol: power transmission capability, data transmission capability, ID and other information.  All full-featured Type-C cables should be packaged with E-Marker, but USB2.0 Type-C cables can be packaged without E-Marker.

The current market application status of USB TYPEC Cable

USB TYPE C to USB2.0 data cable charging cable; suitable for devices such as mobile phones and other USB TYPE C interfaces to connect to existing USB chargers for charging and computer host USB interfaces for data transmission.

USB TYPE C to USB2.0A F (female) data cable; suitable for NEWMACBOOK, LeTV mobile phones, USB TYPEC interface to connect mobile hard drives, U disks, keyboards and mice, etc.

USB TYPE C to mini USB data cable charging cable; suitable for connecting USB2.0 T-port devices and USB TYPE C for data transmission and charging, such as Canon cameras connected to NEW MACBOOK, to achieve synchronous data transmission.

USB TYPE C to USB2.0 B data cable, suitable for computers with USB TYPE C interface such as Apple NEW MACBOOK, connect devices with USB2.0 square interface such as square printer, square camera, etc.

We comprehensively pass the equipment configuration and actual market application, and then through the practical guidance of the industry's predecessors, the summary answer is as follows, please take a brick:

First: If we provide a voltage of more than 5V or a current of more than 3A through the USB TYPE-C interface, then the TYPE-C interface chip must be required to implement the USB PD protocol.

Second: If your device uses 5V voltage and does not exceed 3A (mainly depends on the power supply characteristics and data transmission characteristics of the device itself), if the device itself only supplies power outside, or this accepts power from the other party, and the role of power supply and data transmission  The default role is matched, that is, the power supply party is HOST, and the power consumption party is DEVICE, so congratulations, you can save money, you don't need a TYPE-C chip. Of course, local tyrants can use it at will.

Third: The above two are used to determine whether a TYPE-C chip is needed on the device. In fact, our wire partners are more concerned about whether the C TO C CABLE needs an E-MARKER chip. This judgment standard is personal opinion.  You can shoot bricks at will. If the current exceeds 3A, use E-MARKER chips. Do n’t waste money if you do n’t exceed it. In addition, the line of A TO C and B TO C depends on whether you need to implement Battery Charging protocol.  The advantage of using a chip is that it can achieve charging and data transmission, which can avoid the problem that some adapters that do not comply with the Battery Charging protocol cannot charge Apple devices.