Pine64 storage
#21
(01-10-2016, 04:43 AM)joe Wrote:
(01-10-2016, 03:59 AM)baylf2000 Wrote:
(01-09-2016, 06:52 AM)Andrew2 Wrote:
(01-09-2016, 03:10 AM)joe Wrote: answer me proof sd card speed !  Please !

Nice, you seem to be the average Pine64 kickstarter backer trusting in specs and promises more than in reality Smile

(01-08-2016, 03:31 PM)baylf2000 Wrote: Getting anything greater than about 25MB/s from an SD card

I would suspect it's more close to 20/22MB/s (write/read) as with any other Allwinner SoC now.

Exactly. But it's not just Allwinner. The SD card specs say clearly that the maximum theoretical speed for the SD bus itself is 25MB/s. The only way to improve on that is to upgrade the bus to UHS, which requires specialised voltages in the case of UHS I, and extra data lines in the case of UHS II.

I have never seen an ARM soc board implement a UHS interface. I have no idea why. I wish I knew. It's not rocket science. I'm not it might be because of licensing costs for UHS interfaces, but no manufacturer has ever confirmed this to me.

For our rude Chinese friend, here is the official interface specs from the SD Association themselves. https://www.sdcard.org/developers/overvi...index.html


Can you Stop ?

I have no time to here read your English .  This is over 25MB/s , you asked is SD 2.0 version

[Image: i6z9c3.png]
[Image: 5bnzat.png]

Please read allwinner A64 document 

https://drive.google.com/file/d/0B0cEs0l...ef=2&pli=1

Why are you so RUDE? WHO ARE YOU?? If you have no time to read English, why are you here??? You obviously have no idea what you're talking about, so GET LOST!

You are also VERY WRONG. You are confusing the bus interface with the protocol. Two completely different things.

Yes, the processor claims to support UHC, yet there is only a single mention of it in the entire 700+ page "user manual", so I doubt whether it's true. And even if it were true, it requires special implementation both electrically on the board, and within the drivers/firmware. Unless the creators have specifically written a UHS driver, then it WILL NOT WORK AS A UHC interface, and therefore, IT WILL BE LIMITED TO A MAXIMUM OF 25MB/s.


Messages In This Thread
Pine64 storage - by baylf2000 - 01-08-2016, 12:54 AM
RE: Pine64 storage - by samandiriel - 01-08-2016, 01:15 AM
RE: Pine64 storage - by baylf2000 - 01-08-2016, 02:13 AM
RE: Pine64 storage - by samandiriel - 01-08-2016, 02:40 AM
RE: Pine64 storage - by baylf2000 - 01-08-2016, 05:01 AM
RE: Pine64 storage - by Andrew2 - 01-08-2016, 07:02 AM
RE: Pine64 storage - by nomadewolf - 01-08-2016, 06:44 PM
RE: Pine64 storage - by baylf2000 - 01-09-2016, 03:07 AM
RE: Pine64 storage - by hlide - 01-10-2016, 04:00 PM
RE: Pine64 storage - by monmoonmooonmoooon - 01-11-2016, 08:28 AM
RE: Pine64 storage - by joe - 01-11-2016, 08:58 AM
RE: Pine64 storage - by tllim - 01-11-2016, 02:09 PM
RE: Pine64 storage - by baylf2000 - 01-11-2016, 05:01 PM
RE: Pine64 storage - by Galileo - 01-12-2016, 06:03 AM
RE: Pine64 storage - by monmoonmooonmoooon - 01-11-2016, 09:07 AM

Possibly Related Threads…
Thread Author Replies Views Last Post
Question External storage problem for pine64 Dani6102 4 1,619 08-22-2023, 08:36 AM
Last Post: gulshan212
  Pine64 as wireless audio device S265 3 3,161 04-07-2022, 10:39 PM
Last Post: S265
  Pine64(+) and manjaro dsychan 0 1,113 04-05-2022, 11:32 PM
Last Post: dsychan
Thumbs Down Pine64 was a Useless Project pushpendrak 18 28,336 11-21-2020, 10:17 PM
Last Post: tllim
  Pine64 LCD rstcologne 0 3,091 09-22-2020, 12:43 PM
Last Post: rstcologne
  Pine64+ power button PaddyChan 0 2,743 09-14-2020, 09:55 AM
Last Post: PaddyChan
  Pine64 OS dpcons 2 4,899 03-02-2020, 04:32 PM
Last Post: dpcons
  Jailhouse supports Pine64+ vj-kumar 0 2,805 02-17-2020, 11:39 PM
Last Post: vj-kumar
  PINE64 board not powering up loki21century 2 5,520 11-25-2019, 12:19 PM
Last Post: Partymack711
  Pine64 not powering up. skylab 5 7,168 05-03-2019, 02:48 PM
Last Post: Mendota

Forum Jump:


Users browsing this thread: 1 Guest(s)