Difference between revisions of "TvNow"

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[[Image:tvnow-external.jpg]]
 
[[Image:tvnow-external.jpg]]
  
U1 Sharp LH79524-NOE A0.
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U1 Sharp [[LH79524]]
     208 BGA Package
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     [[ARM720T]] Processor
    Datasheet. Userguide. Sharp's site.
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    A0. Rev. Non ROHS 76.2MHz
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    VDDC = 1.8V
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    VDD = 3.3V
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    USB 1.1 High speed device support with OHCI/UHCI interface
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    Glueless NAND interface
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    Alternative booting on POR
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    16K SRAM
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    JTAG pins:
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        * TDO - 4mA drive
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        * TDI - internal pull up with 50K, schmitt trigger
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        * TMS - internal pull up with 50K, schmitt trigger
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        * TCLK - internal pull up with 50K, schmitt tigger
+
  
 
U2 Conexant CX25836-3A
 
U2 Conexant CX25836-3A
 
     Located below a shield. TQFP-64
 
     Located below a shield. TQFP-64
     Single chip video decoder. Datasheet and product brief.
+
     Single chip video decoder. {{pdf|DSH-200685-001.pdf|Datasheet}} and {{pdf|PBR-200627-001.pdf|Product Brief}}.
 
     IO are LVTTL. IOL=4mA drive.
 
     IO are LVTTL. IOL=4mA drive.
U4 Unknown COB package
+
U4 Unknown [[Chip On Board]](CoB) package
 
U5 Green unmarked 0805 package
 
U5 Green unmarked 0805 package
 
     Located on USB board  
 
     Located on USB board  
 
U6 Green unmarked 0805 package
 
U6 Green unmarked 0805 package
 
     Located on USB board  
 
     Located on USB board  
U7 Unknown COB package
+
U7 Unknown [[Chip On Board]](CoB) package
 
U8 TI LM324
 
U8 TI LM324
 
U9 Hynix HY57V643220DT-6
 
U9 Hynix HY57V643220DT-6
 
     Long, leaded TSOP II 86 pin package
 
     Long, leaded TSOP II 86 pin package
 
     SDRAM, VDD=3.3 & VDDQ=3.3V, 64Mbit, x32, 4banks, LVTTL
 
     SDRAM, VDD=3.3 & VDDQ=3.3V, 64Mbit, x32, 4banks, LVTTL
     Decoded per 2004SFC-DRAM.pdf. 6ns (166MHz), 2Mx32  
+
     Decoded per the {{pdf|2004SFC-DRAM.pdf|datasheet}}. 6ns (166MHz), 2Mx32  
 
U11 Hynix HY27UA081G1M
 
U11 Hynix HY27UA081G1M
 
     Wide, leaded package
 
     Wide, leaded package
 
     NAND flash, 1Gb  
 
     NAND flash, 1Gb  
 
U12
 
U12
U14 Unknown COB package
+
U14 Unknown [[Chip On Board]](CoB) package
  
 
Boards
 
Boards
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[[Image:tvnow-internal.jpg]]
 
[[Image:tvnow-internal.jpg]]
 +
 +
[[Category:Hardware Hacking]]

Latest revision as of 19:33, 10 February 2008

Tvnow-external.jpg

U1 Sharp LH79524

   ARM720T Processor

U2 Conexant CX25836-3A

   Located below a shield. TQFP-64
   Single chip video decoder. http://www.elinux.org/images//8/83/Pdf.gif Datasheet http://www.elinux.org/images/d/da/Info_circle.png and http://www.elinux.org/images//8/83/Pdf.gif Product Brief http://www.elinux.org/images/d/da/Info_circle.png.
   IO are LVTTL. IOL=4mA drive.

U4 Unknown Chip On Board(CoB) package U5 Green unmarked 0805 package

   Located on USB board 

U6 Green unmarked 0805 package

   Located on USB board 

U7 Unknown Chip On Board(CoB) package U8 TI LM324 U9 Hynix HY57V643220DT-6

   Long, leaded TSOP II 86 pin package
   SDRAM, VDD=3.3 & VDDQ=3.3V, 64Mbit, x32, 4banks, LVTTL
   Decoded per the http://www.elinux.org/images//8/83/Pdf.gif datasheet http://www.elinux.org/images/d/da/Info_circle.png. 6ns (166MHz), 2Mx32 

U11 Hynix HY27UA081G1M

   Wide, leaded package
   NAND flash, 1Gb 

U12 U14 Unknown Chip On Board(CoB) package

Boards The entire system is composed of 4 boards. Most electrolytics are through hole. However, there are a few scattered tantalums.

   * There is a main board with the CPU, memory, and flash, and a SD socket. There is a cylinder shaped crystal (probally 32KHz, watch xtal) and a 28.6363Mhz xtal.
   * There is a board that has the AV inputs on one side.
   * On the otherside, there is a board with a mini USB connector.
   * A 4th board sits on top of 2 sets of fine (0.05 or finer) headers. 


discusion: http://forums.parallax.com/forums/default.aspx?f=15&m=158549

vendor: http://www.hasbro.com/tiger/default.cfm?page=browse&product_id=18617

Tvnow-internal.jpg