The JTAG connector is backwords. you need to solder pin headers on back or use convertor.
| Ambit120 Cable modem |
Ambit120 surfboard modem.
The CPU of the board uses BCM3345. The tool to debug the CPU is EJTAG (DMA).
| Picture showing JTAG connector The JTAG connector is backwords. you need to solder pin headers on back or use convertor. |
| Flash | One 2MB | 29LV160BTC |
| Firmware | 2MB | $9FC00000-$9FDFFFFF |
| RAM | 16MB | $80000000-$81000000 |
| Definition | Commands (USB JTAG NT 0.13): |
| TAmbit120.xml | Backup firmware getram 9fc00000 200000 save 9fc00000 200000 Program whole firmware. (Should not interrupt) USB JTAG NT has removed "program" command for SB4100 and SB4200. The programming speed is about 30KB/s for "sprogram" (Intel) and about 13-15KB for AMD chip detect ldram 9fc00000 erase 9fc00000 200000 sprogram 9fc00000 200000 cmpram 9fc00000 200000 cmpram is optional. It can be used after program only when DMA is supported.After that you should see DEBUG ON. You should see "Compair data OK" |
