USB to serial port/serial port to USB chip

(1) ft232r: ftdi (www.ftdichip.com) recently released a USB Interface Conversion Chip to convert USB to serial UART interfaces, or to synchronize, asynchronous bit-bang interface mode. Ftbench is a real cross-platform solution. It has versions suitable for various operating systems. It is prepared for the Linux kernel and the source code is open. It is part of the Linux kernel. It is easier to design and use this chip. The specific model is ft232rl. The price is 18 yuan. \ R

(2) PL-2303 chip (pv8651): is a prolific company PL-2303 series. However, the drivers of this series do not support Mac OS Operating Systems. I found that pl2303 has poor working stability. I have never succeeded in a few of them. I don't know if I have not done well. Specific models for PL-2303HX, the market to sell tens of dollars of USB adapter inside is its dual-chip solution. The price is 6.8 yuan. \ R

(3) cp2101 chip: it is a dedicated high-integration communication chip launched by cygnal integrated product company. It is a brand new Single-Chip Solution for converting USB to UART. The specific model is cp2102. The price is 9 yuan.

Comments by netizens: \ r
The biggest drawback of ft232bm is that it cannot work properly on some USB Hub without buffering (most of the USB with a bandwidth of 10 yuan), and the data volume will soon die, at the same time, all devices connected to the hub must be reset once before they can work normally. At the same time, if other USB devices are working on the hub, sometimes the system will become slow, and even die. This is the conclusion we have drawn from a lot of tests. In addition, the price is not good. Cp2102 our company should get the price of <13 yuan RMB, while ft232bm> 15 yuan, plus the cost of external EEPROM and crystal oscillator is much higher than cp2102. \ R
The disadvantage of cp2102 is that the built-in driver is not good and there is a problem with buffer scheduling. It is often not possible to quickly feedback data back. The public release of the Linux driver has also been changed, and all the variables have been changed to numbers, which is difficult to read. Our company used this chip to overwrite the driver to solve the problem. At the same time, cp2102 welding is not very easy. \ R
If you want to directly connect a single piece of data, do not use the pl2303 output by RS232. Use cp2101/cp2102/ft232bm to make the TTL output better. \ R
Currently, the information I got is: ftbench is very good. Cp210x is generally used and data is easy to lose. \ R

USB to serial port, dual chip and single chip: \ r
(1) semitech USB serial cable. It was found that foreigners were swearing at semitech's USB serial cable. Poor compatibility. \ R
(2) the better is a kind of prolific chip Z-Tek, the price seems to be 30-40. Serial Line of the Z-Tek prolific chip. Good stability. \ R

(3) BAFO line BF-810, this is a better compatibility, the price is 30-40 yuan. Both sides of the Public head are nuts, which can be closely connected with the mother head.★Actually used, \ r

(4) We found that the Belkin string line is the best of all the strings I have ever seen !! The connection is stable. It is no different from the local serial port !! My colleague saw another group buying 12 !! (I bought another one myself). It is definitely the best choice for value !! \ R

On the Internet, I also saw a new and hp usb-to-serial port. The chip is ftdi. I heard that the compatibility is better than Belkin. Do you know if you have used it? What chip does Belkin use? \ R