Must be kept at reset value
Port Toggle bit y(y=0..15)
These bits are set and cleared by software.
0: No action on the corresponding OCTLy bit
1: Toggle the corresponding OCTLy bit
7.4.13. Port output speed register 1 (GPIOx_OSPD1, x=A..D,F)
Address offset: 0x3C
Reset value: 0x0000 0000
This register has to be accessed by word(32-bit).
Must be kept at reset value
Set Very High output speed when OSPDy(y=0..15) is 0b11
If the output speed is more than 50MHz, set this bit to 1 and set OSPDy to 0b11.
These bits are set and cleared by software.
0: No effect
1: Max speed more than 50MHz. Must set OSPDy to 0b11