2.4.5.1 ECOs to Enable the DP83TC812R PHY
By default, the board is designed to be used with the DP83867E PHY with the RJ45 connector. To enable the
DP83TC812R PHY with the MATEnet connector, the following hardware changes must be made. For help with
locating these components on the PCB, refer to the provided Schematic, BOM, and assembly files.
1. Remove R98 and populate on R74
2. Remove R101 and populate on R230
3. Remove R103 and populate on R96
4. Remove R105 and populate on R100
5. Remove R121 and populate on R178
6. Remove R122 and populate on R225
7. Remove R195 and populate on R245
8. Remove R290 and populate on R234
9. Remove R325 and populate on R237
10. Remove R336 and populate on R238
11. Remove R338 and populate on R239
12. Remove R339 and populate on R240
13. Remove R413 and populate on R247
14. Remove R369 and populate on R249
15. Populate D18 and D19 ESD diodes
16. Populate C55
17. The bootstrap configuration pins can be populated/removed as needed depending on the use case
2.4.6 USB Connectors (J8, J10)
Note
The EVM should be powered on before the USB cables are connected. Plugging in the USB cables
before powering on the board can cause the board to get stuck in a permanent reset state. In the
event that this occurs, just unplug the USB cables, power cycle the EVM, and plug in the USB cables
to resolve the issue.
The AWR2944EVM has two standard micro USB connectors.
Micro USB Connector J10 provides access to the AWR2944 UART, SPI, I2C, RS232, and SOP interfaces
through the FTDI chip.
Table 2-7. J10 Pin Assignment
Pin Number
Description
Pin Number
Description
1
FTDI_VBUS
2
FTDI_USBD_N
3
FTDI_USBD_P
4
FTDI_USBID
5
GND
6
GND
7
GND
8
GND
9
GND
10
GND
11
GND
Hardware
20
AWR2944EVM User’s Guide
Copyright © 2021 Texas Instruments Incorporated
