Products > Embedded Computing

any *cheap* miniPCIe-quad-serial?

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DiTBho:
For a crazy project I need two miniPCIe-quad-serial modules with
- RS232 interface
- FIFO >=64 byte
- >= 200Kbit/s per line
- asynchronous full duplex
- Linux kernel compatibility with UART { 16C450, 16C550, 16C650, ... }
- not too long form factor, say with the same form factor of a miniPCIe wifi module

Isn't there anything cheaper? say 30 Euro/module?

edit:
yup, I am going to play with eight serial lines. Too long story, crazy project, I know, I know  ;D

spostma:
maybe you can use a networked 8x serial port server like this one:
https://hackaday.com/2022/03/16/eight-rs232-ports-one-ethernet-port/

DiTBho:

--- Quote from: spostma on March 18, 2022, 06:03:01 pm ---maybe you can use a networked 8x serial port server like this one:
https://hackaday.com/2022/03/16/eight-rs232-ports-one-ethernet-port/

--- End quote ---

It's interesting, but I need the two miniPCIe cards connected to SBC.

KaneTW:
60EUR/module seems very reasonable for something that needs an FPGA.

DiTBho:

--- Quote from: KaneTW on March 18, 2022, 07:20:20 pm ---60EUR/module seems very reasonable for something that needs an FPGA.

--- End quote ---

Which FPGA? maybe, you mean those modules have an FPGA on the B side of the PCB ... I haven't checked what they use. I know the PCI-e one chip solution OXFORD OXPCIe954 uses a big ASIC chip and provides four 4 inexpedient serial 16C950 channels. It's is more expensive, 76.85 UKP + 10.92 UKP postage from United Kingdom.

Years ago I bought a couple of "miniPCI" (parallel bus) modules because they were 60% off.  They work fine on an embedded MIPS router, but they have some quirks.

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