4.6 Switch Configuration Options
The DP83869EVM includes a 4-pin dip switch (S1), 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 4-11 for switch configurations and LED outputs. For each switch, PU is 1 and PD is 0.
Table 4-11. 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
4 0100
Test Mode 4 -
Distortion
Successfully entered Test Mode 4
Red
Green
Green Off Yes
Failed to enter Test Mode 4 (Flashing LEDs) Red Red Red No
5 0101 Test Mode 5
Successfully entered Test Mode 5
Red
Green
Green Green Yes
Failed to set Test Mode 5 (Flashing LEDs) Red Red Red No
6 0110 Force 100Mbps
Force 100-Mbps speed with force MDI
Red
Green
Green Red Yes
Program failed to program the PHY
registers
Off Green Red No
7 0111 Force 10Mbps
Force 10-Mbps speed with force MDI and
PRBS on.
Off Green Red
No
Program failed to program the PHY
registers
Red Red Red
8 1000 Reverse Loopback
Successfully entered Reverse Loopback
Red
Green
Red Off Yes
Failed to enter Reverse Loopback (Flashing
LEDs)
Red Red Red No
9 1001 xMII Loopback
Successfully entered xMII Loopback
Red
Green
Red Green Yes
Failed to enter xMII Loopback (Flashing
LEDs)
Red Red Red No
10 1010 Enable BIST
Enable BIST in Copper Ethernet Mode Red Green
Red
Green
No
Program failed to program the PHY
registers
Red Red Red
11 - 14
1011 -
1110
RESERVED RESERVED - - - No
Configuration Options www.ti.com
14 DP83869 Evaluation Module SNLU237A – SEPTEMBER 2018 – REVISED JANUARY 2024
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