Hi,
I am working on LPC2468, trying to program data through ISP and IAP.
Below is the circuit diagram of my work, just want to know minimum pin require, so I only connect necessary pins.
ISP program through UART protocol is working great, but the speed is too slow.
So I decide to connect LPC2468 to JLINK, program it through Jtag protocol(J-Flash 6.44V), But TDO pin didn't return any response.
Pin connection:
Jtag -> PC2468
nTRST -> TRST
TDI -> TDI
TMS -> TMS
TCK -> TCK
RTCK not connected
TDO -> TDO
RESET -> RESET
DEGRQ not connected
5V-Supply -> VCC
GND -> GND
TDO always keep on high.
Could you please provide application circuit for references?
Hi,
Below is the pins you need to connect:
The JTAG port may be used either for debug or for boundary scan. The state of the DBGEN pin determines which function is available. When DBGEN = 0, the JTAG port may be used for boundary scan. When DBGEN = 1, the JTAG port may be used for debug.
Have a great day,
Sol
-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!
- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------
