How to connect Flash Magic to LPC922

[ericinsomewhere]

I have built a circuit following the app note "http://www.esacademy.com/software/flashmagic/appnotes/ISPHardwareEntryAppNote.pdf" Figure 7, it can program LPC932.

Now I have to switch to LPC922. According to the data sheet of LPC922,  the signals used is PCL and PDA, not TxD and RxD of the app note. How to connect LPC922 to the circuit?

Anybody can help?

Eric

[Andy Ayre]

On some LPC9xx devices there are two methods of programming the device serially. ISP and ICP.

ISP - uses hex records received by the UART on RxD and responds on TxD
ICP - uses a serial protocol on the PCL and PDA pins

Flash Magic only supports ISP. If you wish to use ICP with Flash Magic then you must program another device to act as an ISP to ICP bridge. Most often this is done using an LPC932 or LPC935 on a Keil MCB900 board and then a Philips PAB9xx board is plugged into the MCB900 to hold the device being programmed via ICP.

[ericinsomewhere]

thx