Hi, On Wed, 19 Mar 2008 10:27:47 +0000, Andy Green <[EMAIL PROTECTED]> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi folks - > > We had some internal talk about how to go post GTA02 and Wolfgang wants > us to make it external. > > We have a choice about basing on S3C2443 or S3C6400. A lot of the info > is confidential but not these high level things which are public domain > on Samsung's site. > > S3C2443 is an 130nm incremental improvement over the 2442 in GTA02 with > 480Mbps USB Device (not OTG) and better clock scaling. It can accept > x16 DDR memory. > > S3C6400 is 90nm and has 480Mbps USB2 OTG, 667MHz max clock, some 2D > acceleration and can accept x32 DDR memory. > > http://www.samsung.com/global/business/semiconductor/productInfo.do?fmly_id=229&partnum=S3C6400 > http://www.samsung.com/global/system/business/semiconductor/product/2007/8/21/661267ptb_s3c6400_rev15.pdf > > I like the 6400 better but information is a bit scarce right now and it > can go either way.
I'd vote for 6400. I think we're a big enough group of people with a big company supporting us so we can probably push samsung to open some information. > > Some other concepts kicked around: > > - Merge the debug board function on to the phone, perhaps with internal > micro USB used for debricking and hacking. No write-once memory. the problem with the micro-usb is space on the case. It'd be cool if we could make GTA03 (or whatever name) was a thinner. > - Discard U-Boot, minimal bootloader direct to kernel I really like the idea of minimal bootloader, but not direct on the kernel. LKML won't like it at all. We can have a separate project for this minimal bootloader. I'm pretty sure 50k lines of code is way enough. > - Focus on SD Card rootfs rather than internal memory This is also a bit weird as if our sd card break we can't use the device :-s I like the way it is today allowing the user to choose whether he wants NAND boot or SD card boot. > - Add a small lowpower MPU like TI MPS430 to manage everything > seamlessly when main CPU is down. Stuff like motion sensors, wake > sources, battery management, maybe touchscreen, leds so there is an > always-on "guiding hand" in the phone that is consistent and reliable Are you taking about the msp430? I really like that chip it's really low power consumption and really easy to program ;-) Good catch > To be clear though -- GTA02 is soon going to actually exist, and this is > just future talk right now. But because of that, if you have any ideas > about future arch, now is the time to throw them in and they will at > least get the time of day. Again, I really liked the s3c6400, it's already ARM11, operates in 533mhz, has HS-MMC/SD controller (worth checking if it's sdhci-compliant), it has a watchdog timer (great success!! :-p), a built-in usb otg transceiver (good for me, ehehe). Well, it's a really good chip :-), for more info, checkout [1]. What I'd suggest for the next device (if I can), would be to make it thinner and put a camera (or maybe two, like most of the phones are now), s3c6400 already has a camera interface which would really help us and maybe using a keyboard (qwerty i mean) sliding out from the back of the phone and accelerometers to get screen rotation; just to exemplify the keyboard thingy checkout [2[. Before I forget, change the usb connector to micro-AB receptacle ;-) [1] http://www.samsung.com/global/business/semiconductor/productInfo.do?fmly_id=229&partnum=S3C6400 [2] http://www.mobiletechreview.com/phones/HTC-Mogul.htm I have some thoughts about UI as well.. but this is for another list :-p -- Best Regards, Felipe Balbi http://felipebalbi.com [EMAIL PROTECTED]
