external addressing ?

[slacker66]

hi all

With A20 i want to dial with other logic peripheral, On A20 cpu i need some address (chip select) and at least one byte 4 are very good.

Allwinner A20 support it ?

thank

[Gerrit]

Depending on how fast it has to be you can pick 5 GPIO pins and use them for select and adressing

[slacker66]

Thank
i need a speed equal 4 or 8 or 16 mhz, no more. But what are pin of data bus ?