



ARM920T Core Module R/W Registers Issues ?
by Unknown on Dec 17, 2003 |
Not available! | ||
Hi, dear elites I monitor the bus behavior of core module CM920T by logic analyzer. And I found that it needs about 20~30 cycles to read/write a external AHB slave register. When I read or write 4 continuous address registers, sequenctial transfer won't happen(HTRAN==2'b11) and still need 20~30 cycles to operate. How can I reduce the read/write cycles of CM920T? How can improve the performance of CM920T. The 920T core's freq. is 50MHz and the AHB freq. is 15.36MHz(ext.) The test program is just a simple R/W register and no other loading wrtiien in C. The Integrator AP/CM system uses asynchronous bridges to allow connection between differing Core Modules and these bridges(ASB->AHB). I am wondering if there are anyony ever encountered the same problem for driver response issues. We need to improve the r/w register cycles. Appreciate for your any comments. Thanks Nanson |



