UM0306 Documentation conventions
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1 Documentation conventions
1.1 List of abbreviations for registers
The following abbreviations are used in register descriptions:
read/write (rw) Software can read and write to these bits.
read-only (r) Software can only read these bits.
write-only (w) Software can only write to this bit. Reading the bit returns the reset value.
read-clear (rc) The software can only read or clear this bit.
read/clear (rc_w1)
Software can read as well as clear this bit by writing 1. Writing ‘0’ has no
effect on the bit value.
read/clear (rc_w0)
Software can read as well as clear this bit by writing 0. Writing ‘1’ has no
effect on the bit value.
read/set (rs)
Software can read as well as set this bit. Writing ‘0’ has no effect on the bit
value.
toggle (t) The software can only toggle this bit by writing ‘1’. Writing ‘0’ has no effect.