SLVUC11 April   2021 DP83561-SP

 

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3.1.1 VDDIO Selection

In addition to supplying the correct voltage, the DP83561-SP uses straps to select VDDIO levels. If 2.5 V is used as the VDDIO level, the VDDIOSEL_1 strap must be pulled high, which can be done by placing a shunt on J35. If 1.8 V is used asthe VDDIO level, both the VDDIOSEL_1 and VDDIOSEL_0 straps must be pulled high, by placing shunts on J35 and J36. For a VDDIO level of 3.3 V, these pins can be left floating.

Table 3-1 VDDIO Selection Strap Settings
Strap VDDIO Level
VDDIOSEL_1 VDDIOSEL_0
0 0 3.3 V
0 1 Reserved
1 0 2.5 V
1 1 1.8 V

GUID-20201104-CA0I-VBPF-SRXL-PBHDSP1RPW78-low.gif Figure 3-1 DP83561EVM VDDIO Selection Straps