Texas Instruments DP83TC812EVM-MC, Руководство пользователя, Страница: 6 / 22

2.2.2.3 SMI Interface
Note
• DP83TC812 PHY_ID on EVM is 10
• DP83867 PHY_ID on EVM is 01
After installing and enabling the USB2MDIO tool, power on the EVM and connect to the computer through the
micro-USB port. Verify communication on each PHY by reading register 0x0001.
• DP83TC812 will read 0x1 = 0x0061 with no link partner and 0x1 = 0x0065 with a link partner connected
• DP83867 will read 0x1 = 0x7949 with no link partner and 0x1 = 0x796D with a link partner connected
• To enable analog loopback on the DP83TC812, write 0x0108 to address 0x0016
2.2.3 Master and Slave Mode Selection – DP83TC812
• Master Mode
– Place shunt across pins 1 and 2 of J2 as demonstrated in figure below
• Slave Mode
– Place shunt across pins 2 and 3 of J2
Figure 2-6. DP83TC812 configured as Master
2.2.4 Wake Selection – DP83TC812
• Place shunt in PU position at WAKE header shown to pull wake pin of DP83TC812.
• Place shunt in GND position at WAKE header shown to pull down wake pin of DP83TC812.
Figure 2-7 shows jumper in PU position on header.
Figure 2-7. Wake pin in pulled up position
2.2.5 LED Indication
• Look for LED_0 (D3 or D4) and LED_1 (D2) to illuminate when a link is successfully established on the
DP83TC812
• Look for LED to illuminate on the RJ45 when a link is successfully established on the DP83867
• LED_1 (D2) will blink for TX/RX activity
Introduction www.ti.com
6 DP83TC812EVM-MC User's Guide SNLU292A – NOVEMBER 2020 – REVISED MARCH 2022
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