[ICOM] IC-FR4000 OPC-1211 flash cable

D Jones djoneses at verizon.net
Sat Jul 1 08:36:11 EDT 2023


J-12 on the logic unit is used for flashing the CPU.  That connector is not an RJ-45 connector.
 
 
  On Fri, Jun 30, 2023 at 9:46 PM, Larry L Hinton<hinton.ll at frontier.com> wrote:   Basically it is a USB-to-Serial from what you are describing with the added programming pins. I was actually looking for the cable on line. The input is definitely USB. The output looks like it is an eight pin RJ-45 but I do not know the connections on that side. The CPU internal to the 1211 would convert the USB input to whatever signals are necessary. The point is, this is not a straight through cable by any means.

Larry Hinton
K7YBZ
Sent from my iPad

> On Jun 30, 2023, at 18:34, D Jones via Icom <icom at mailman.qth.net> wrote:
> 
> Whoops, forgot:6 - Ground
> 
> 
>  On Fri, Jun 30, 2023 at 9:31 PM, D Jones<djoneses at verizon.net> wrote:  Don't know if this will help, but here is the pinout for J12 on the logic unit:
> 1 - TX Data (from the CPU on the logic unit) normally pulled high2 - RX Data (to the CPU on the logic unit) normally pulled high3 - Sets Mode 2 in the CPU when high (Vss)4 - Reset (resets the CPU when low)5 - 5V from the logic unit 
> 
>  On Fri, Jun 30, 2023 at 7:54 PM, flameout at gmail.com<flameout at gmail.com> wrote:    My FR4000 repeater is running on Revision 1.2 (the programming software is
> 1.4) and I was able to get the Firmware to update it to v1.6 (EX2712A-6)
> but now I see I need the OPC-1211 Flash Upgrade cable that plugs into the
> Logic board (J-12) Does anyone have any idea where to find that cable or
> even the pin-out where maybe I can make my own??
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