SNLA370A December 2020 – December 2020 DP83TG720R-Q1 , DP83TG720S-Q1
Strap features on RX_D0, RX_D1, RX_D2, LED_0, and LED_1 are same for all four devices. They can be used by keeping the strap resistors open or by using a pull up resistor. Test Mode straps are not not supported on DP83TG720. This allows those strap pins to be used as two level straps. The two PHYs can be configured in Test Modes via register access.
When strap resistors are not used, the PHY's internal pull down resistors will configure the PHY in Mode 1 by default. However, for LED pins it is recommended to use pull down resistor in parallel with the an LED when using Mode 1.
PIN NO. | PIN NAME | DP83TC811 | DP83TG720 | ||||
---|---|---|---|---|---|---|---|
STRAP MODE Table 2-7 | STRAP | STRAP MODE Table 2-8 | STRAP | ||||
26 | RX_D0 | MAC[0] | TEST[0] | MAC[0] | NA | ||
Mode 1 | 0 | 0 | Mode 1 | 0 | |||
Mode 2 | 0 | 1 | NA | NA | |||
Mode 3 | 1 | 0 | NA | NA | |||
Mode 4 | 1 | 1 | Mode 2 | 1 | |||
25 | RX_D1 | MAC[1] | TEST[1] | MAC[1] | NA | ||
Mode 1 | 0 | 0 | Mode 1 | 0 | |||
Mode 2 | 0 | 1 | NA | NA | |||
Mode 3 | 1 | 0 | NA | NA | |||
Mode 4 | 1 | 1 | Mode 2 | 1 | |||
24 | RX_D2 | MAC[1] | TEST[2] | MAC[2] | NA | ||
Mode 1 | 0 | 0 | Mode 1 | 0 | |||
Mode 2 | 0 | 1 | NA | NA | |||
Mode 3 | 1 | 0 | NA | NA | |||
Mode 4 | 1 | 1 | Mode 2 | 1 | |||
35 | LED_0 | MS | RESERVED | MS | NA | ||
Mode 1 | 0 | Mode 1 | 0 | ||||
Mode 2 | RESERVED | RESERVED | NA | NA | |||
Mode 3 | RESERVED | RESERVED | NA | NA | |||
Mode 4 | 1 | Mode 2 | 1 | ||||
6 | LED_1 | AUTO | RESERVED | AUTO | RESERVED | ||
Mode 1 | 0 | Mode 1 | 0 | ||||
Mode 2 | RESERVED | RESERVED | NA | NA | |||
Mode 3 | RESERVED | RESERVED | NA | NA | |||
Mode 4 | 1 | Mode 2 | 1 |
Required strap resistor values for MAC, Master/Slave and Autonomous mode configurations are in Table 2-7 for DP83TC811 and in Table 2-8 for DP83TG720.
MODE | IDEAL RH (kΩ) | IDEAL RL (kΩ) |
---|---|---|
1 | OPEN | OPEN |
2 | 10 | 2.49 |
3 | 5.76 | 2.49 |
4 | 2.49 | OPEN |
MODE | IDEAL RH (kΩ) |
---|---|
1 | OPEN |
2 | 2.49 |