TS-7840 DSL Modem
From embeddedTS Manuals
The TS-7840 supports the Mestechs aDSL modem. This communicates over both a UART (/dev/ttyS6 at 115200 8n1), and a 10/100 Ethernet. The 10/100 Ethernet connects to the arm CPU using an onboard USB SMSC95XX Ethernet controller. This is shown in Linux as eth3.
# Turn on modem 5V:
gpioset 3 19=1
| Pin | Description |
|---|---|
| 1 | MODEM_SW_5V |
| 2 | GND |
| 3 | NC |
| 4 | ETH_100_TX- |
| 5 | ETH_100_TX+ |
| 6 | ETH_100_RX- |
| 7 | ETH_100_RX+ |
| 8 | DSL_MODEM_RXD (/dev/ttyS6) |
| 9 | DSL_MODEM_TXD (/dev/ttyS6) |
| 10 | GND |
| 11 | NC |
| 12 | NC |
| 13 | NC |
| 14 | RING (#RJ11) |
| 15 | TIP (#RJ11) |