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Original question:

TMS570LC4357: How to use the SDXC card 64 or 128GB instead of SDHC card 32GB for High volume capacity.

TMS570LC4357: How to use the SDXC card 64 or 128GB instead of SDHC card 32GB for High volume capacity.

Santhosh Chandramohan
Intellectual 391 points
Part Number: TMS570LC4357

Hi QJ Wang,

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1095921/tms570lc4357-how-to-use-the-sdxc-card-64-or-128gb-instead-of-sdhc-card-32gb-for-high-volume-capacity

Santhosh: 

How to use the SDXC card 64 or 128GB  instead of SDHC card  32GB for High volume capacity. 

QJ Wang : 

TMS570 doesn't have a dedicated native SDCard interface. You can use SPI to interface with a SD Card if this SD card supports SPI mode.

 I haven't tried a SDXC card on TMS570 HDK. I think it should work if it supports SPI mode.

Can you share me any support reference code for SDXC card code related to TMS570 HDK ?

 

  • 0
    TI__Guru**** 192146 points

    Hi Santhosh,

    Both SDHC and SDXC support SPI mode. They use the same SPI protocol. 

    SD card: Capacities range from 128MB to 2GB,

                   Format: FAT16

                   SD cards will work in all host devices that support SD, SDHC, or SDXC

    SDHC card:  Based on the SDA 2.0 specification.

                         Capacities range from 4GB to 32GB

                         File Format: FAT32

    SDXC card: Based on the SDA 3.0 specification

                        Capacities range from 64GB to 2TB

                        Filet Format: exFAT

    Because SDXC uses a different file system called exFAT and it works differently than standard SD cards and SDHC cards. We don't have example to reading and writing fro/to SDXC cards.

  • 0 in reply to QJ Wang
    Intellectual 391 points

    HI QJ Wang,

    Can you share the library for SDXC card read and write which is used in any other MCU other than TMS570 .

    Share me the link which TI MCU is used this library for SDXC ?

    Thanks in advance.

    Santhosh

  • 0 in reply to Santhosh Chandramohan
    TI__Guru**** 192146 points

    Hi Santhosh,

    As I said, we don't have example of SDXC SD card.