| CG3100D Cable modem |
NETGEAR CG3100D
This modem DOCSIS 3.0 modem and has BCM3380 CPU. It employs 8M SPI flash.Use USB JTAG NT's can program the flash ISP.
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| The SPI chip |
| The ISP pin uses pin 4 of USB JTAG NT. When USB JTAG NT is unplugged it works as regular modem>
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| JTAG connector of USB JTAG NT | Connector of u-Link NT (You can directly apply 3.3v and ignore the ISP pin | Pin on the flash |
| Pin 4(GND) | Pin 2(GND) | ISP |
| Pin 3(TDI) | Pin 10(IO0) | Pin 15(SI) |
| Pin 5(TDO) | Pin 8(IO1) | Pin 8(SO) |
| Pin 9(TCK) | Pin 6(IO2) | Pin 16(SCK) |
| Pin 11(RESET) | Pin 4(IO3) | Pin 7 (CS) |
| Pin 2(GND) | Pin 2(GND) | Pin 10(GND) |
