Hi Champs
does the TDA4VM MMC interface support encryption? In the TRM is says the below, it is conflicting between supporting the secure digital and not? but does that mean we support encryption on the MMC interface on tDA4VM or not?
Thanks
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Hi Champs
does the TDA4VM MMC interface support encryption? In the TRM is says the below, it is conflicting between supporting the secure digital and not? but does that mean we support encryption on the MMC interface on tDA4VM or not?
Thanks
Hi Mohsen,
The TRM snippet did not come through, could you re-attach it?
Regards,
Vishal
here you go its in section 12.3.6.1.1
MMCSD1/MMCSD2 Host Controller (SD/SDIO interface):
Secure Digital Card Support:
– Backward compatible with earlier SD card specifications
– SD Host Controller Standard Specification 4.10 and SD Physical Layer Specification v3.01
– SDIO Specification v3.00
– Default Speed mode: 3.3 V signaling, frequency up to 25 MHz, up to 12.5 MBps
– High Speed mode: 3.3 V signaling, frequency up to 50 MHz, up to 25 MBps
– SDR12: UHS-I 1.8 V signaling, frequency up to 25 MHz, up to 12.5 MBps
– SDR25: UHS-I 1.8 V signaling, frequency up to 50 MHz, up to 25 MBps
– SDR50: UHS-I 1.8 V signaling, frequency up to 100 MHz, up to 50 MBps
– DDR50: UHS-I 1.8 V signaling, frequency up to 50 MHz, up to 50 MBps
Memory Interfaces www.ti.com
10894 SPRUIL1A–May 2019–Revised November 2019
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Copyright © 2019, Texas Instruments Incorporated
Peripherals
12.3.6.1.2 MMCSD Not Supported Features
MMCSD0 Host Controller:
• MultiMedia Card:
– 3.3 V, 3.0 V and 1.2 V
– Secure Digital Card and SDIO
– Muxing of other LVCMOS interfaces onto the MMCSD interface at the SoC level
– HS400 DDR:
• 1.8 V, 0-200 MHz, 8-bit bus width, 400 MBps
MMCSD1/MMCSD2 Host Controller:
• MultiMedia Card
• Secure Digital Card:
– UHS-II
– SDR104: UHS-I 1.8 V signaling, frequency up to 200 MHz, up to 100 MBps
Hi Vishal
thanks for pointing that out but still if you look at the not supported it says MMCSD1/MMCSD2 host controller does not support secure digital card but above it says that MMCSD1/MMCSD2 does support secure digital card? so which is true? or when it says don't support is just certain features? We might want to clarify exactly what we support and what we don't.
also does that mean we do support encryption on the MMC interface or that is something else? Can you also comment on this please.
Thanks
Hi Mohsen,
It is stating UHS-II SD cards are not supported and UHS-I cards are supported with exception of SDR104 speed mode.
ok great can you answer my 2nd questions also please below
also does that mean we do support encryption on the MMC interface or that is something else? Can you also comment on this please.
Thanks
I am not sure about this question, need to check and get back.
Haven't heard of encryption and MMC.
Mohsen,
Can you be specific about the features you are looking for? I don't see encryption specifically called out in the spec.
Thanks & Regards,
Shiou Mei