老大 具体想问一下
10–8
MUX
Pin Mux Control
The corresponding pin is configured as follows:
000 Pin Disabled (Analog).
001 Alternative 1 (GPIO).
010 Alternative 2 (chip specific).
011 Alternative 3 (chip specific).
100 Alternative 4 (chip specific).
101 Alternative 5 (chip specific).
110 Alternative 6 (chip specific).
111 Alternative 7 (chip specific / JTAG / NMI).