11 misunderstandings about USB Type-C
1. USB Type-C and PD are complicated
When using a universal connector that can be plugged into a power supply or device, negotiating which device powers which device seems to be intimidating for product designers and consumers. However, the complexity of the product can vary according to the needs of the product designer. For devices that only support Type-C, an integrated circuit (IC) can be used to perform this negotiation and connection. For more complex features, a power supply protocol (PD) can be implemented. To achieve USB-C PD compliance, a series of strict guidelines must be followed. Product certification must be reviewed by the USB-IF Regulatory Committee. The use of firmware from certified IC vendors can simplify solution design.
2. USB Type-C and PD are expensive
In order to detect, connect, and negotiate communications, the move from USB 2.0 to USB-C seems expensive. For basic USB-C functions, a state machine controller can be used. The price of this controller in the market is less than 20 cents. This minimizes cost, power consumption, and PCB space. In addition, with the widespread adoption of USB-C, the price of controller ICs is also declining, and they are becoming more energy-efficient. With the popularity of USB-C, the price of implementation is declining. The cost of including a USB-C socket and controller in the system is less than 20 cents.
3. All Type-C ports have the same function
Although it is a universal connector, the actual characteristics of the USB-C port may vary greatly. The port of the travel adapter only charges the device, and the port of the wearable device usually only accepts charging. The ports of dual-role devices such as laptop computers can be recharged or charged. The power limit of the standard Type-C port is 15W. If the PD protocol is implemented, it can be as high as 100W. In addition, the data communication of some ports can reach the speed of USB Super Speed Gen 2 10Gbps. Other features may include display ports or support for Thunderbolt.
4. All Type-C cables are the same
Although the USB-C cable is unique, the adoption rate of the USB-C form factor is high, and USB-C cables are also becoming more common. The trend is that this cable will eventually become the only cable that consumers need. If the same cable can be used to charge the PC from any charger and charge the phone and any wearable devices, the number of cables required by consumers will eventually decrease.
6. Type-C cable is just an interface different from Type-A and Type-B
Type-C using PD is far superior to Type-A and Type-B in terms of power supply and data rate. Although the power capability of Type-A and Type-B BC 1.2 has developed to a maximum of 7.5W, USB-C PD can negotiate power to a maximum of 100W. USB SS Gen 1 has a maximum data rate of 5Gbps, while Gen 2 has a maximum data rate of 10Gbps. The latest update also supports the simultaneous use of Tx and Rx lines, further doubling the effective data rate.
7.Type-C cable is only used for data and charging small electronic products
USB-C is of course universal, not only for powering phones and small wearable devices, but also for PCs, home appliances, and even industrial equipment with power ratings within 100W.
8. I still need 3.5mm jack to listen to music
This is not a problem. USB-C supports getting audio based on the connector. The USB-C cable has dedicated D+/D- pins to support audio signals. The SBU pin can also be used for microphone and ground signals. Some headset manufacturers are developing headsets that use USB-C connectors, and many manufacturers are developing adapters (dongles). The dongle is a small adapter with a 3.5mm jack on one end and USB-C on the other end, allowing consumers to continue to use their favorite 3.5mm headphones. Although the sound quality may be degraded due to the installation of dongle, many consumers have chosen this cheap option instead of replacing the headphones immediately.
9.USB-C no longer supports analog audio
Although USB-C is very versatile and can charge, transfer data, and listen to audio, some people still find it difficult to use because its device has only one port. The initial assumption is that the USB-C port can only support one function at a time. However, the USB-C specification stipulates that it allows multiple functions to be performed on the same port at the same time. The USB-C specification provides for accessory support for this purpose. Consumers can purchase dongle with USB-C input and multiple outputs to charge, transfer data and listen to audio at the same time.
11. Video quality based on USB port is too poor
This is not the case. The USB-C feature is of course better than the USB 2.0 feature. The USB-C specification includes "Alternate Mode". These functional extensions support non-standard USB protocols such as display port and Thunderbolt transmission via USB-C connector. USB-C supports up to 4K HD video based on super speed pins. The USB-C connector truly combines industry-leading power, data, video, and audio protocols in a stylish, flexible form factor.
When using a universal connector that can be plugged into a power supply or device, negotiating which device powers which device seems to be intimidating for product designers and consumers. However, the complexity of the product can vary according to the needs of the product designer. For devices that only support Type-C, an integrated circuit (IC) can be used to perform this negotiation and connection. For more complex features, a power supply protocol (PD) can be implemented. To achieve USB-C PD compliance, a series of strict guidelines must be followed. Product certification must be reviewed by the USB-IF Regulatory Committee. The use of firmware from certified IC vendors can simplify solution design.
2. USB Type-C and PD are expensive
In order to detect, connect, and negotiate communications, the move from USB 2.0 to USB-C seems expensive. For basic USB-C functions, a state machine controller can be used. The price of this controller in the market is less than 20 cents. This minimizes cost, power consumption, and PCB space. In addition, with the widespread adoption of USB-C, the price of controller ICs is also declining, and they are becoming more energy-efficient. With the popularity of USB-C, the price of implementation is declining. The cost of including a USB-C socket and controller in the system is less than 20 cents.
3. All Type-C ports have the same function
Although it is a universal connector, the actual characteristics of the USB-C port may vary greatly. The port of the travel adapter only charges the device, and the port of the wearable device usually only accepts charging. The ports of dual-role devices such as laptop computers can be recharged or charged. The power limit of the standard Type-C port is 15W. If the PD protocol is implemented, it can be as high as 100W. In addition, the data communication of some ports can reach the speed of USB Super Speed Gen 2 10Gbps. Other features may include display ports or support for Thunderbolt.
4. All Type-C cables are the same
Although all USB-C cables have the same pin arrangement and can be plugged into any USB-C port, this does not necessarily mean that they have the same electrical characteristics and characteristics. The standard cable has a rated current of 3A and a length of less than 4 meters. Cables shorter than 2 meters or needing to support 3-5A require an electronic marking IC, or e-marker. The cable may also have "full functionality", for example, supporting up to 4K HD video. As mentioned above, a full-featured cable may actually have more wires, which can achieve additional bandwidth. The Type-C specification allows designers to use only the features required by their ports, thereby reducing complexity and cost. As the market matures, more and more solutions have been optimized for a given market demand.
Although the USB-C cable is unique, the adoption rate of the USB-C form factor is high, and USB-C cables are also becoming more common. The trend is that this cable will eventually become the only cable that consumers need. If the same cable can be used to charge the PC from any charger and charge the phone and any wearable devices, the number of cables required by consumers will eventually decrease.
6. Type-C cable is just an interface different from Type-A and Type-B
Type-C using PD is far superior to Type-A and Type-B in terms of power supply and data rate. Although the power capability of Type-A and Type-B BC 1.2 has developed to a maximum of 7.5W, USB-C PD can negotiate power to a maximum of 100W. USB SS Gen 1 has a maximum data rate of 5Gbps, while Gen 2 has a maximum data rate of 10Gbps. The latest update also supports the simultaneous use of Tx and Rx lines, further doubling the effective data rate.
7.Type-C cable is only used for data and charging small electronic products
USB-C is of course universal, not only for powering phones and small wearable devices, but also for PCs, home appliances, and even industrial equipment with power ratings within 100W.
8. I still need 3.5mm jack to listen to music
This is not a problem. USB-C supports getting audio based on the connector. The USB-C cable has dedicated D+/D- pins to support audio signals. The SBU pin can also be used for microphone and ground signals. Some headset manufacturers are developing headsets that use USB-C connectors, and many manufacturers are developing adapters (dongles). The dongle is a small adapter with a 3.5mm jack on one end and USB-C on the other end, allowing consumers to continue to use their favorite 3.5mm headphones. Although the sound quality may be degraded due to the installation of dongle, many consumers have chosen this cheap option instead of replacing the headphones immediately.
9.USB-C no longer supports analog audio
Many people think that if transferred via USB-C, all audio must be digital. This is not the case. Many electronic platform designers will continue to use analog audio. There is a clause in the USB specification that if the system uses analog audio, it must also support digital audio.
Although USB-C is very versatile and can charge, transfer data, and listen to audio, some people still find it difficult to use because its device has only one port. The initial assumption is that the USB-C port can only support one function at a time. However, the USB-C specification stipulates that it allows multiple functions to be performed on the same port at the same time. The USB-C specification provides for accessory support for this purpose. Consumers can purchase dongle with USB-C input and multiple outputs to charge, transfer data and listen to audio at the same time.
11. Video quality based on USB port is too poor
This is not the case. The USB-C feature is of course better than the USB 2.0 feature. The USB-C specification includes "Alternate Mode". These functional extensions support non-standard USB protocols such as display port and Thunderbolt transmission via USB-C connector. USB-C supports up to 4K HD video based on super speed pins. The USB-C connector truly combines industry-leading power, data, video, and audio protocols in a stylish, flexible form factor.
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