By PURPLELEC | 23 April 2024 | 0 Comments
PCI/PCIe to multiple serial ports and printing port solution
The serial port described in this solution mainly refers to the RS232 level asynchronous serial port, including RXD, TXD, CTS, DSR, RI, DCD, RTS, DTR, a total of 8 RS232 level signal lines and a common ground wire. The connector is usually a DB9 pin. Its pin definition, function and appearance are the same as the ordinary hardware serial port that comes with the computer motherboard. It can also support automatic handshake of hardware flow control and support higher serial communication baud rate.
The parallel port/printing port described in this solution mainly refers to the parallel port compatible with Centronics and IEEE1284 specifications SPP, Nibble, EPP, and ECP, including D0-D7 (Data0-Data7), STB (Strobe), AFD (AutoFeed), INIT, SIN (SelectIn), ERR (Fault), SELT (Select, SLCT), PE (PEmpty, PError), ACK, BUSY, a total of 8 bidirectional, 4 output, 5 input signal lines and several public ground lines, external connections The connector is usually a DB25 jack, and its pin definitions, functions and appearance are the same as the ordinary hardware parallel port that comes with the computer motherboard.
PCI or PCIe multi-serial port solution supports DOS, WINDOWS 98/ME/NT4.0/2000/XP/Vista/Win7/Server2003, LINUX and other operating systems, and is mainly used to expand more RS232 level asynchronous serial ports for computers. If you only need a TTL level asynchronous serial port (UART), you can directly remove the level conversion chip 75232 or MAX3243.
PCI/PCIe multi-serial port solutions and printing ports include single serial port, 2 serial ports, 4 serial ports, 8 serial ports, 16 serial ports, etc., which are specifically divided into:
1. PCI dual serial port based on CH352L chip
2. PCIe dual serial port based on CH382L chip, 256-byte FIFO
3. PCI single serial port + PCI printing port/parallel port based on CH352L chip, one serial and one parallel
4. PCI dual RS485 interface based on CH352L chip, refer to the schematic diagram CH352RR in the PCB file CH352SSP, there is a sample
5. PCI dual serial port + PCI print port/parallel port based on CH353L chip, dual serial and one, supports printing port addressing
6. PCIe dual serial port + PCIe printing port/parallel port based on CH382L chip, dual serial and combined, 256-byte FIFO
7. PCI four serial ports based on CH355L chip
8. PCI four serial ports based on CH357L chip, 128-byte FIFO
9. PCIe four serial ports based on CH384L chip, 256-byte FIFO
10. PCI four serial ports + PCI printing port/parallel port based on CH356L chip, four serial ports and one parallel port
11. PCI four serial ports + PCI printing port/parallel port based on CH358L chip, four serial ports and one combined, 128-byte FIFO
12. PCIe four serial ports + PCIe print port/parallel port based on CH384L chip, four serial ports and one combined, 256-byte FIFO
13. PCI eight serial ports based on CH358L chip, 128-byte FIFO
14. PCIe eight serial ports based on CH384L chip expansion, 128-byte FIFO
15. PCI sixteen serial port based on CH359L chip, 128-byte FIFO, no MODEM signal line, only RXD and TXD signal lines
16. PCIe twenty-eight serial ports based on CH384L chip expansion, 128-byte FIFO, supports PCIe sixteen serial ports and twenty serial ports
17. PCI eight serial ports based on CH356L chip expansion
18. PCI four serial ports based on CH353L chip expansion
19. Multi-serial port based on CH365P chip expansion +N * CH432Q/CH438L chip, refer to PCIMSER8 for expansion
20. PCI single printing port/single parallel port based on CH351L chip
21. PCIe single printing port/single parallel port based on CH382L chip
22. PCMCIA serial port/printing port/parallel port (laptop card) based on CH354L chip
23. MiniCard and ExpressCard serial port/printing port/parallel port based on CH382L chip (laptop card)
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