DPC3000 Cable modem

Cisco surfboard Modem
This modem DOCSIS 3.0 modem and has TI pumma5 family. The CPU core is ARM core. It employs 16M SPI flash.Use USB JTAG NT's can program the flash ISP.


The PCB board.ISP pin in red
Close look at the soldering. ISP pin in red.


Connection
JTAG connector of USB JTAG NT Pin on the flash
Pin 1(TRST) ISP. Pin5 of U104
Pin 3(TDI) Pin 15(SI)
Pin 5(TDO) Pin 8(SO)
Pin 9(TCK) Pin 16(SCK)
Pin 11(RESET) Pin 7 (CS)
Pin 2(GND) Pin 10(GND)


Definition Commands (usbjtag NT 0.07 and up):
TDPC3000.xml Backup firmware
getram 0 1000000
save 0 1000000


Program flash
flshdct 0
ldram 0
program 0 100000

Compare the result
cmpram 0 1000000

Lasted Updated:December 31 2016

Vists since Jan 4,2009