Interfacing a micro SD card to ADSP-SC594

Hi,

Unfortunately, there are no alternative methods to connect a micro SD card to the ADSP-SC594 since it does not feature an MSI port.

Regards,

Ranjitha R

Can it not be done just using an SPI port?

G

Hi Graham,

We understand that this issue is already handled through private support. To avoid duplication of efforts, you can continue the discussions through private support.

Regards,
Ranjitha R

Hi Graham, were you indeed able to use SPI port for an SD card?

This kind of answers is the most annoying thing about this Engineer Zone. What's the cool thing about having a forum full of questions without answers? Ridiculous.

Hi,

Sorry for the inconvenience.

Unfortunately, we don’t have specific reference materials for connecting an SD card via the SPI port on the ADSP-SC594 processor. However, we do have an application note (EE-335) for Blackfin processors titled "Interfacing SD Cards with Blackfin® Processors," which covers various methods to interface an SD card, including both serial (SPI) and parallel modes. Please check if this could be helpful for your application and let us know if you need any further assistance.

https://www.analog.com/media/en/technical-documentation/application-notes/ee335_rev1.pdf

Regards,
Nandini.C

Apologize for the huge delay but have never been notified about your reply.

Reported solution is partial, as accessing an SD card in SPI mode from a DSP is an oxymoron. Obviously on a GHz DSP we want speed, and a single SPI can't provide enough BW. Therefore, EE-335 and related code refer to using PPI or EBIU peripherals to access memory in SD mode, which sounds like a joke to SC-5xx/ADSP-215xx customers, since we don't have such peripherals.

Transposing EE-335 ideas to, e.g., OSPI might be theoretically possible, but hey... it's a job! So, as a customer, you might understand that it's quicker for me to switch to another silicon vendor.

Apologize for the huge delay but have never been notified about your reply.

Reported solution is partial, as accessing an SD card in SPI mode from a DSP is an oxymoron. Obviously on a GHz DSP we want speed, and a single SPI can't provide enough BW. Therefore, EE-335 and related code refer to using PPI or EBIU peripherals to access memory in SD mode, which sounds like a joke to SC-5xx/ADSP-215xx customers, since we don't have such peripherals.

Transposing EE-335 ideas to, e.g., OSPI might be theoretically possible, but hey... it's a job! So, as a customer, you might understand that it's quicker for me to switch to another silicon vendor.