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diff --git a/electronics/netv.page b/electronics/netv.page new file mode 100644 index 0000000..807db0d --- /dev/null +++ b/electronics/netv.page @@ -0,0 +1,94 @@ +========================= +Chumby NeTV +========================= + +`Chumby Wiki NeTV Page <http://wiki.chumby.com/index.php/NeTV_developer_info>`_ + +**Opening the case:** the grey rubber on the bottom peels up at the corners to +reveal 4 small philips head screws. Then the top part of the case needs to be +unsnapped from the bottom by wedging the long sides apart; be careful when +removing the top not to apply pressure on the IR extension jack. + +Hardware +-------------- +`netv v2 BOM +<http://git.chumby.com.sg/netv_hardware/pcb/mainboard_v2/netv_v2_bom.csv>`_ + +MCU + Bom says "Marvell 88AP166-A0-BJD2C008", chip says ``88AP1-BJD2 P1V8690.5 + 1004 ADP TV``. This is similar to a chip in the Microsoft Kinect. + 800 MHz + +Removable Flash + 1Gb MicroSD card + +RAM + ``Hynix HY5PS1G1631C FP-S5 C 023A`` + + 1Gb DDR2 SDRAM + + `Datasheet PDF <http://www.hynix.com/datasheet/pdf/dram/HY5PS1G4(8.16)31C(L)FP(Rev0.3).pdf>`_ + +FPGA + Xilinx Spartan-6 ``XC6SLX9 TQG144AIV1121 D4248875A 2C`` + ~$18/each for small orders. Has 9152 logic cells, 576Kb RAM blocks, 16 DSP + slices, 2 memory controllers. + +WIFI + USB module with AzureWave AW-NU137 chip. + +CPU Software Environment +-------------------------------------------- +``Linux localhost.localdomain 2.6.28 #1 Tue Aug 30 16:41:06 SGT 2011 armv5tejl GNU/Linux`` + + $ df -h + Filesystem Size Used Available Use% Mounted on + /dev/root 481.9M 276.4M 181.1M 60% / + none 61.6M 128.0K 61.5M 0% /dev + /dev/mmcblk0p3 424.4M 15.1M 387.4M 4% /media/storage + /dev/mmcblk0p3 424.4M 15.1M 387.4M 4% /var + /dev/mmcblk0p3 424.4M 15.1M 387.4M 4% /psp + tmpfs 61.6M 392.0K 61.2M 1% /var/volatile + tmpfs 61.6M 0 61.6M 0% /dev/shm + tmpfs 61.6M 0 61.6M 0% /media/ram + + $ free -m + total used free shared buffers cached + Mem: 123 92 30 0 3 59 + -/+ buffers/cache: 29 93 + Swap: 0 0 0 + +I get this dmesg notifcation about 30 seconds after boot when the netv is +powered by USB from my Thinkpad X200s laptop (which is plugged in to wall +power): + + [ 34.140267] A Device didn't response because the VBUS is low! + + +HDMI +------ +`wikipedia article on HDMI <http://en.wikipedia.org/wiki/Hdmi>`_ + +HDMI is evil shit; you "must" pay a $0.04/device licensing fee. DisplayPort is +free but is much more complicated. + +HDCP is the evil DRM shit that encrypts video data going over HDMI connections. +This protocol was already being used over DVI connections; HDMI just adds more +features. + +------------------------------------------------------------------------- +HDMI Version Max Res. Max Pixel Clk Total Bandwidth Other +------------ ------------ -------------- ------------- ------------- +1.0 (2002) 1920x1200 165 MHz 3.96 Gbit/s +1.3 (2006) 2560x1600 340 MHz 8.16 Gbit/s +1.4 (2009) 4096x2160 340 MHz 8.16 Gbit/s Ethernet +------------------------------------------------------------------------- + + + +------------- + + +http://rdist.root.org/2011/09/13/the-magic-inside-bunnies-new-netv/ + +http://wiki.chumby.com/index.php/NeTV_developer_info |