Dick; Doesn't this go the other way? As I recall, the purpose of those chips is to provide a serial port to microcontrollers using the I2C bus. They need to be set up over the I2C for things like data rate and stuff like that. That would make them pretty much useless for this type of operation. or am I missing something?
On May 20, 2008, at 2:00 PM, dick_faust wrote: > If you use a NXP SC18IM700 Serial to I2C chip it directly interfaces > to the Si570 or the PIC socket . The serial interface can be run at > various baud rates and can easily be opto isolated from the PC on a > RS232 or USB converter. The demo kit from NXP OM6272 is fully built > with RS232 in and power from USB on PC It also works with most [all > that I have tried] USB to 232 converters, - again simple to opto- > isolate the USB to 232 and run demo kit from same supply as Softrock > 5V [3.3v reg on the demo] or 12V with resistor. > > PC can do freq calcs and register value generation very easily. Not > presently sure how to capture CAT from Kenwood, but probably could > loop through or capture from another RS232/USB port. CAT from ICOM > would be another option to be included. Actually an interface from > Ham Radio Deluxe might be easier > http://groups.yahoo.com/group/ham-radio-deluxe/ > or http://forums.ham-radio.ch/ > > Dick Faust K9ivb > > -Jack Brindle, W6FB =======================================================================
