case about nRF54L15 & nRF54LM20 sQSPI sEMMC SPI

[peter.min]

Hi,

1.Can the sQSPI and SPI functions of nRF54L15 operate simultaneously at 32 MHz on the P2 port?
2.Can the sEMMC and SPI of nRF54L15 operate simultaneously at 32 MHz on the P2 port?
3.Can the sEMMC and sQSPI of nRF54L15 operate simultaneously at 32 MHz on the P2 port?

4.Can the sQSPI and SPI functions of nRF54LM20 operate simultaneously at 32 MHz on the P2 port?
5.Can the sEMMC and SPI of nRF54LM20 operate simultaneously at 32 MHz on the P2 port?
6.Can the sEMMC and sQSPI of nRF54LM20 operate simultaneously at 32 MHz on the P2 port?

Best regards,

Peter.Min

[Simonr]

Hi Peter

You're right, I jumped the gun on my last reply, and it has been updated to reflect that. Thank you for correcting me.

There shouldn't be an issue to use the SPI alongside a high speed softPeripheral like sQSPI for instance. Since softperipherals on the VPR core will share instantiation though, sEMMC and sQSPI will not be feasible at the same time.

But please note the following when working with the FLPR core on the nRF54L series: https://nrfconnectdocs.nordicsemi.com/ncs/3.3.0/nrf/app_dev/device_guides/nrf54l/vpr_flpr.html#memory-allocation 

UPDATE: Sorry about the back and forth on this one. It's not the GPIOs restricting this usage but the extra high drive must be exclusive to the Soft Peripheral: https://nrfconnectdocs.nordicsemi.com/ncs/latest/nrfxlib/softperipheral/doc/sQSPI/sqspi_nrf54L_series_porting_v1_2_1.html#high-speed-transfers 

"When sQSPI performs read transfers at frequencies greater than or equal to 32 MHz, no other peripheral or ETM trace on the P2 port can use the extra-high-drive GPIO configuration. "

Best regards,

Simon

[peter.min]

Hi Simon,

1.I need some clear responses to present to the client, rather than just some reference materials.

1.Can the sQSPI and SPI functions of nRF54L15 operate simultaneously at 32 MHz on the P2 port?
2.Can the sEMMC and SPI of nRF54L15 operate simultaneously at 32 MHz on the P2 port?
3.Can sQSPI on the nRF54L15 operate at 64 MHz?

4.Can the sQSPI and SPI functions of nRF54LM20 operate simultaneously at 32 MHz on the P2 port?
5.Can the sEMMC and SPI of nRF54LM20 operate simultaneously at 32 MHz on the P2 port?
6.Can sQSPI on the nRF54LM20 operate at 64 MHz?

Best regards,

Simon

[Simonr]

Hi

I understand. Here are responses to your latest questions:

1. No, the extra high drive must be exclusive to the Soft Peripheral when operating at higher speeds than 8MHz.

2. No, the extra high drive must be exclusive to the Soft Peripheral when operating at higher speeds than 8MHz.

3. Yes, the sQSPI is able to run at up to 64MHz with the Extra-high-drive setting.

4. No, the Soft Peripheral must have exclusive access to extra-high-drive strength when operating at 32MHz or faster.

5. No, the Soft Peripheral must have exclusive access to extra-high-drive strength when operating at high speeds.

6. Yes, the sQSPI is able to run at up to 64MHz with the Extra-high-drive setting.

Best regards,

Simon