Can a 16MHz signal input to the gpio pin of nRF52832?

RE: Can a 16MHz signal input to the gpio pin of nRF52832?

endnode — Mon, 25 Sep 2017 09:44:22 GMT

RE: Can a 16MHz signal input to the gpio pin of nRF52832?

endnode — Mon, 25 Sep 2017 09:44:16 GMT

What do you mean by "GPIO with EasyDMA"? As far as I understand there is nothing like that. GPIO can either be

read/written if you configure it as input/output
or it can generate some interrupts if you configure it as GPIOTE
or you can configure it as analogue input
or you can use it to launch some other task through PPI mechanism
or you can link it with some other HW peripheral block which performs serial or similar communication standard (UART/TWI/I2C/SPI/QSPI/USB/NFC/I2S/PDM/PWM/...). Many restrictions apply here (e.g. not app GPIO PINs can serve as all these interfaces) but then these special peripherals have EasyDMA option to transfer data in memory according to configuration in registers without need to use core processor.

RE: Can a 16MHz signal input to the gpio pin of nRF52832?

chenlmm — Mon, 25 Sep 2017 09:35:02 GMT

Thanks your answer . it is possible I can't descript explicit. actually ,I want to know the nRF52832 GPIO pin can input the max data frequency with the easyDMA? THANKS!

RE: Can a 16MHz signal input to the gpio pin of nRF52832?

endnode — Mon, 25 Sep 2017 09:07:13 GMT

There seems to be no such "parallel 8-bit" port on nRF5x chips, not speaking about 16MHz clock input. I guess you need specific chip which will be able to handle this and transfer it to nRF52 over some serial interface (still it will be basically impossible to handle 16x8=128Mbps transfer, no interface can manage that and there is no space for storing MB of data so you will run out of space in few seconds of such transfer). nRF53840 with USB and QSPI might be better but still you cannot utilize this over radio so one would wonder why using nRF5x chips for such high throughput application...