Texas Instruments DP83869EVM, User Manual

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Configuration Options
15 SNLU237 – September 2018
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Copyright © 2018, Texas Instruments Incorporated
DP83869EVM User's Guide
Figure 7. Onboard Clock
Figure 8. External Clock Input
4.6 Switch Configuration Options
The DP83869EVM includes a 4-pin dip switch (S3), which can be used for various test modes and feature
displays. Some of the switch settings can also be used with the USB-2-MDIO GUI for additional control.
Except for switch mode 15, all switch modes are hard-coded and can be used without USB-2-MDIO or any
other serial com port. Refer to
Table 13 for switch configurations and LED outputs. For each switch, PU is
1 and PD is 0.
Table 13. 4-Pin Dip Switch Modes
Mode SW[4:1] Feature LED Description
LED
D14
LED
D15
LED
D16
USB2MDIO
0 0000 Normal Operation
USB-2-MDIO Active (Flashes very briefly
red during read and green during write) Red
Green
Off Off Yes
Program failed to read PHY register Red Off Off
No
Program failed to write PHY register Green Off Off
1 0001
Test Mode 1 -
Droop
Successfully entered Test Mode 1
Red
Green
Off Green Yes
Failed to enter Test Mode 1 (Flashing
LEDs)
Red Red Red No
2 0010
Test Mode 2 -
Clock Frequency,
Master Jitter
Successfully entered Test Mode 2
Red
Green
Off Red Yes
Failed to enter Test Mode 2 (Flashing
LEDs)
Red Red Red No
3 0011
Test Mode 3 -
Slave Jitter
Successfully entered Test Mode 3
Red
Green
Off
Red
Green
Yes
Failed to enter Test Mode 3 (Flashing
LEDs)
Red Red Red No