3.2.7.4 USB-B Interface
The figure below shows the USB implementation on the USB-B port terminated on USB Type C connector J19.
The table below describes the pin assignment of USB-B connector J19.
| Pin No | Mnemonic | Signal Description |
|---|---|---|
| A1 | GND | Ground return |
| A2 | SSTXp1 | SuperSpeed differential pair #1, TX, positive (NOT USED) |
| A3 | SSTXn1 | SuperSpeed differential pair #1, TX, negative (NOT USED) |
| A4 | VBUS | Bus power |
| A5 | CC1 | Configuration channel |
| A6 | DP1 | USB 2.0 differential pair, position 1, positive |
| A7 | DN1 | USB 2.0 differential pair, position 1, negative |
| A8 | SBU1 | Sideband use (SBU) |
| A9 | VBUS | Bus power |
| A10 | SSRXn2 | SuperSpeed differential pair #2, RX, negative (NOT USED) |
| A11 | SSRXp2 | SuperSpeed differential pair #2, RX, positive (NOT USED) |
| A12 | GND | Ground return |
| B12 | GND | Ground return |
| B11 | SSRXp1 | SuperSpeed differential pair #1, RX, positive (NOT USED) |
| B10 | SSRXn1 | SuperSpeed differential pair #1, RX, negative (NOT USED) |
| B9 | VBUS | Bus power |
| B8 | SBU2 | Sideband use (SBU) |
| B7 | DN2 | USB 2.0 differential pair, position 2, negative |
| B6 | DP2 | USB 2.0 differential pair, position 2, positive |
| B5 | CC2 | Configuration Channel |
| B4 | VBUS | Bus power |
| B3 | SSTXn2 | SuperSpeed differential pair #2, TX, negative (NOT USED) |
| B2 | SSTXp2 | SuperSpeed differential pair #2, TX, positive (NOT USED) |
| B1 | GND | Ground return |