From f5f8252701e02defe2ac26ee8c712e75fce51b6b Mon Sep 17 00:00:00 2001
From: bnewbold <bnewbold@robocracy.org>
Date: Thu, 29 Sep 2011 09:57:10 -0400
Subject: basic netv info

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 electronics/netv.page | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 electronics/netv.page

(limited to 'electronics')

diff --git a/electronics/netv.page b/electronics/netv.page
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+=========================
+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
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