On Sat, Jul 26, 2014 at 12:20 PM, Simon Kenyon simon@koala.ie wrote:
in that case:
- remove all connectors from the end of the card
- add as much ram as you can and double it
:) ok, the three cpus are all very different. the IC1T is aimed at ultra-low cost devices: i believe it's around the $2 mark. its RAM maxes out at 512mb. i've matched it with an SMIC9514 to give it 2 USBs and Ethernet. i'll put it with a TSOP-48 2gbyte NAND from Foresee. it has very limited pins so there will be no extra connectors. i think every single pin goes into the standard compliant interfaces.
the A20 we know, it maxes out at 2gb, i don't want to make major alterations so it stays with the RTL8201 (100mb/s eth) for now.
the Ingenic jz4775 can actually address 3gb RAM but for space reasons i am only putting in 2gb, and because it is a new design i am putting it with a GbE Phy. however the kernel driver needs improvement: as-is it can manage 300mbit/sec. there is spare pins for an SD/MMC as well as a NAND IC however that is the lot: no extras for HDMI, no extras for USB-OTG: unlike the A20 there is only 1 USB-OTG (which goes to the standard connector) and one 11mbit/sec USB 1.1 (which also goes to the standard connector).
so they are all very different and all maxed out on space and RAM already.
l.