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Better WiFi/BT module?
#11
FM+GPS functionality would be awesome. But I dont know what are limitations comes from SDIO port. Also I think it would be difficult to make this kind of module because the pins of wifi expansion port maybe a limitation. For me I think it is not worth to try, needs lots of customization in kernel and I dont even mention about making a module from bga packaged chip  Confused
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#12
I checked availability of the chipset on several distributors and didnt see stock anywhere... a better approach is probably to just make an adapter board for an existing SDIO module...
Come have a chat in the Pine A64 IRC channel >>
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#13
I dont understand, adapter board for existing SDIO module, what do you mean?
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#14
Well you get an SDIO stamp (like the one on the Pine module from Realtek) and make a breakout PCB to adapt it to the pin headers of the Pine board...
Come have a chat in the Pine A64 IRC channel >>
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#15
The mentioned chipset was just an example, as that was the one with the highest possible bandwidth that supported SDIO. So it's not a necessity to have THAT chip, but basically anything that can get, say, 800Mbps+ on 5Ghz would be perfect.
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#16
(02-09-2017, 11:35 AM)fonix232 Wrote: The mentioned chipset was just an example, as that was the one with the highest possible bandwidth that supported SDIO. So it's not a necessity to have THAT chip, but basically anything that can get, say, 800Mbps+ on 5Ghz would be perfect.

Jomsmirl suggested AMPAK module and here is the link: http://www.ampak.com.tw/product.php?id=22. I will explore on next week when meet up with China vendors.
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#17
(02-12-2017, 10:43 PM)tllim Wrote:
(02-09-2017, 11:35 AM)fonix232 Wrote: The mentioned chipset was just an example, as that was the one with the highest possible bandwidth that supported SDIO. So it's not a necessity to have THAT chip, but basically anything that can get, say, 800Mbps+ on 5Ghz would be perfect.

Jomsmirl suggested AMPAK module and here is the link: http://www.ampak.com.tw/product.php?id=22. I will explore on next week when meet up with China vendors.

That AMPAK module, while looks interesting, it does not provide full speed - 433Mbps is pretty much what you'd expect from an N network, not AC.

However if you check the 356S (http://www.ampak.com.tw/product.php?id=23), it provides double the bandwidth at possibly similar pricing.
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#18
You have to keep in mind that SDIO is not PCIe or USB3.0 :-)

Does anyone know what the maximum bus speed for SDIO3.0 is on the A64?

http://files.pine64.org/doc/datasheet/pi...t_V1.1.pdf page 41

If I read this correct, the SDC1 controller supports either

DS,HS,SDR12,SDR25,SDR50,SDR104

DDR50

SDR104 has a bus clock of 150Mhz, whichs means that at 4 bit you would get theoretically 600Mbit/s raw bit rate minus the frame/protocol overhead,
so in practice probably quite a bit less?

Tyical SDIO3.0 Wifi modules have around 433Mbit https://boundarydevices.com/product/bd_sdmac_wifi/

You also need 1.8V signaling for the SDR104 mode... which is maybe possible because Port G seems to be connected to it's own DLDO/ELDO

http://files.pine64.org/doc/Pine%20A64%2...elease.pdf
http://files.pine64.org/doc/datasheet/pi...t_V1.0.pdf

ELDO1 is adjustable from 0.7-1.9V (Imax 400mA)
DLDO4 is adjustable from 0.7-3.3V (Imax 500mA)

Faster modules might still give a little bit more headroom for link degradation...
Come have a chat in the Pine A64 IRC channel >>
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