Difference between revisions of "TvNow"

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Line 8: Line 8:
 
     Single chip video decoder. Datasheet and product brief.
 
     Single chip video decoder. Datasheet and product brief.
 
     IO are LVTTL. IOL=4mA drive.
 
     IO are LVTTL. IOL=4mA drive.
U4 Unknown COB package
+
U4 Unknown [[Chip_On_Board Chip On Board(CoB)]] package
 
U5 Green unmarked 0805 package
 
U5 Green unmarked 0805 package
 
     Located on USB board  
 
     Located on USB board  

Revision as of 17:59, 31 May 2007

Tvnow-external.jpg

U1 Sharp LH79524

   ARM720T Processor

U2 Conexant CX25836-3A

   Located below a shield. TQFP-64
   Single chip video decoder. Datasheet and product brief.
   IO are LVTTL. IOL=4mA drive.

U4 Unknown Chip_On_Board 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 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 2004SFC-DRAM.pdf. 6ns (166MHz), 2Mx32 

U11 Hynix HY27UA081G1M

   Wide, leaded package
   NAND flash, 1Gb 

U12 U14 Unknown 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