| SB5102 Cable modem |
Motorola SB5102 surfboard
This modem does not have a JTAG port, but we can access its flash via SPI.Use USB JTAG NT's new feature of SPI can do online programming the flash.
Picture showing USB JTAG NTis connected. Upright J303 is the connector.![]() |
Detail of the connector.![]() |
| JTAG connector of USB JTAG NT | Connector of u-Link NT | SPI connector of J303 |
| Pin 1(TRST) | Pin 1(3.3V) | Pin 9(ISP enable) |
| Pin 3(TDI) | Pin 10(IO0) | Pin 10(SI) |
| Pin 5(TDO) | Pin 8(IO1) | Pin 8(SO) |
| Pin 9(TCK) | Pin 6(IO2) | Pin 6(SCK) |
| Pin 11(RESET) | Pin 4(IO3) | Pin 4 (CS) |
| Pin 2(GND) | Pin 2(GND) | Pin 2(GND) |
| Definition | Commands (usbjtag NT 0.07 and up): |
|
TSB5102.xml |
Backup firmware getram flasht save flash Program flash flshdct flash ldram flash erase flash sprogram flash |





