DM365 GIO interrupt pins multiplex problem

Andrew M15943

I am currently putting together the hardware for an IP camera type design and have run into a problem, of the 16 GIO interrupts available on the DM365, 15 of them are multiplexed with the MII lines used by the EMAC leaving only 1 interrupt free. Unfortunately I require around 10 interrupts so I have a bit of a problem.

The BINTEN register allows you to select the GIO bank that will be used to trigger interrupts, but at the moment you can only select bank 0.

Was this a design oversite by TI, and is there any way you can select other banks or is there another way around this problem?

Thanks

Andrew

over 15 years ago

0 Juan Gonzales over 15 years ago

TI__Mastermind 37340 points

Andrew,

Unfortunately, this appears to be the case although we have put in requests to have this fixed in the next silicon rev if possible.

In the mean time, the following may help

Interrupts coming in from PWRCTRIO[2:0] (not PWRCTRO[2:0] ) GPIO PINS can use these 3 interrupts and are mapped in the AINTC AS int#56, #57, #58 as noted in the ARM INT Table for those pins when used as GPIOs from the PRTCSS perspective. Interrupt 29 is used for the RTC specific signals and interrupt #56/57/58 are used for PWRCTIO[2:0] gpio signals.