Author Topic: Setting OPTO Isolate (Port B)  (Read 157 times)

tcmichals

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Setting OPTO Isolate (Port B)
« on: March 09, 2019, 05:56:34 PM »
Would like to use OPTO Isolate for Port B for the FTDI on the CYC1000 board,  OPTO Isolate Fast Serial is defined in the FTDI manual at https://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT2232H.pdf section 3.1.4.6.  The goal is to get data at greater then 3Mbps, via USB,  the FTDI chip supports 50Mbps, the current goal is just 10Mbps.

Questions:
- Would changing Port B From RS232 UART to  OPTO Isolate using FTDI FT Prog cause any issues with JTAG port? 
- Is it possible to restore the EEPROM for the FTDI to the original contents?  Is there a EEPROM image available from trenz or Arrow?

The reason for asking before changing from RS232 to OPTO Isolate, some other vendors JTAG devices using FTDI chip FT Prog app can "brick" the FTDI chip i.e. the user can restore the original operation, JTAG on Port A and Serial on Port B.

The fast serial should should still work with the standard serial drivers.




tcmichals

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Re: Setting OPTO Isolate (Port B)
« Reply #1 on: March 20, 2019, 02:40:27 PM »
I have validated that changing port B Opt Isolate does not impact JTAG and virtual serial port still works with Fast Serial Mode.  Now pushing forward on verilog code to support fast serial.