In my project I have 68K processor and LPC2368 controller.Always main program running through 68K processor,Some times I need the bus control of 68K is get over the controller.So please tell in what way 68K is idle and give the bus control to the 2368 controller?
The 68000 seems to have been designed for use in multicontroller environments, where other controllers, like another microcontroller or a DMA controller need to assume bus control.
The 68000 uses 3 control lines for this:
The LPC2368 releases control of the bus by making BR high again. After completing its current cycle it then releases BGACK, and the 68000 has control again.
(thanks to supercat for the hint)