![]() ![]() Since that first time of using the EEPROM writer with that device, I get exactly the same behaviour as adaptor 1 when writing. ![]() I've read the following thread from this forum about being able to reprogram the EEPROM - /thread62529.html - however for adaptor 1 if I leave the eeprom writer program settings as default, change the serial number or the PID and press write, I get an error message 'Compare EEPROM failed!' followed by an alert 'Write EEPROM successful!' but it clear isn't as the PID hasn't changed and (although I'm not certain I know where to look for the serial number) the serial number doesn't appear to change either when reviewing device info (nothing seems to change).Īdaptor number 2 - the first time I got it out the box and tried to write to the EEPROM using the writer (same defaults, but just changing the serial number) and didn't get the error message, just the success one! However I don't see anything in either OS that relates to the serial number I supposedly wrote to the device. I've compared the devices in Windows Device Manager, and also with 'lsusb -v' in linux and there's little to distinguish between them. If serial device X is connected to adaptor X and serial device Y connected to adaptor Y, when in linux the kernel can detect an assign these USB devices different device names between reboots. I would like to be able to identify them through software without having to know which adaptor is plugged into which USB bus or whatever. Here's the problem - I have two USB to serial adaptors (identified as using the Prolific PL-2303) which *aren't* identical in appearance but appear the same when detected by OS's. Prolific的V1.4的PL2303的移植手册里有提到 EEPROM Writer Program Version. However for adaptor 1 if I leave the eeprom writer program settings as default, change the serial number or the PID and press write. That the PL-2303HXD is using a newer version (1.0.0.5) for the EEPROM Writer program (see. The table below shows the software comparison for all the PL-2303 chip edition series. Full compliance with the USB Specification v1.1. Customers can design with effective BOM cost and compact PCB size. PL2303HXD integrates on-chip clock generator and OTP ROM to save external crystal and EEPROM. Flexible signal level requirement on the RS-232 serial port side also allows the PL2303HXD to connect directly to 3.3V 1.8V devices. ![]() ![]() ![]()
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