08-16-2017, 07:42 AM
(This post was last modified: 08-16-2017, 08:02 AM by stuartiannaylor.)
http://opensource.rock-chips.com/images/...170309.pdf
eMMC Interface
Compatible with standard iNAND interface
Compatible with eMMC specification 4.41, 4.51, 5.0 and 5.1
Support block size from 1 to 65535Bytes
Support three data bus width: 1-bit, 4-bit or 8-bit
Support up to HS200; but not support CMD Queue and HS400
With a 200Mhz clock & 8 bit data bus the interface should be capable of a theoretical throughput of 200 MB/s
But what HS200 is and how its employed on the ROCK64 ??! I am not worthy
If we are getting the same speed as SD purely because of the cost of the sourced eMMC in the store then it doesn't make a lot of sense if for a few bucks more you can more than double SD throughput?
http://www.samsung.com/global/business/s...l_HR-0.pdf
eMMC Interface
Compatible with standard iNAND interface
Compatible with eMMC specification 4.41, 4.51, 5.0 and 5.1
Support block size from 1 to 65535Bytes
Support three data bus width: 1-bit, 4-bit or 8-bit
Support up to HS200; but not support CMD Queue and HS400
With a 200Mhz clock & 8 bit data bus the interface should be capable of a theoretical throughput of 200 MB/s
But what HS200 is and how its employed on the ROCK64 ??! I am not worthy
If we are getting the same speed as SD purely because of the cost of the sourced eMMC in the store then it doesn't make a lot of sense if for a few bucks more you can more than double SD throughput?
http://www.samsung.com/global/business/s...l_HR-0.pdf