UG-498
ADuCM320 Hardware Reference Manual
Rev. C | Page 6 of 196
USING THE
NUMBER NOTATIONS
Table 1. Number Notations
Notation
Description
Bit N
Bits are numbered in little endian format, that is, the least significant bit of a number is referred to as Bit 0.
V[x:y]
Bit field representation covering Bit x to Bit y of a value or a field (V).
0xNN
Hexadecimal (Base 16) numbers are preceded by the prefix 0x.
0bNN
Binary (Base 2) numbers are preceded by the prefix 0b.
NN
Decimal (Base 10) numbers are represented using no additional prefixes or suffixes.
REGISTER ACCESS CONVENTIONS
Table 2. Register Access Conventions
Mode
Description
RW
Memory location has read and write access.
RC
Memory location is cleared after reading it.
R
Memory location is read access only. A read always returns 0, unless otherwise specified.
W
Memory location is write access only.
MMR bits that are not documented are reserved. When writing to MMRs with reserved bits, the reserved bits should be written with the
value in the reset column of the relevant MMR description, unless otherwise noted.
ACRONYMS AND ABBREVIATIONS
Table 3. Acronyms and Abbreviations
Acronym/Abbreviation
Description
ADC
Analog-to-digital converter
DMA
Direct memory access
DDM
Digital diagnostic monitoring
GPIO
General-purpose input and output
LSB
Least significant byte/bit
MDC
Management data input/output clock
MDIO
Management data input/output
MMD
MDIO manageable device (slave)
MMR
Memory mapped register
MSB
Most significant byte/bit
NMI
Nonmaskable interrupt
NVIC
Nested vectored interrupt controller
NVR
Nonvolatile registers
Rx
Receive
SAR
Successive approximation register
SOA
Semiconductor optical amplifier
SPI
Serial peripheral interface
STA
Station management entity (host/master)
SWD
Sync word detect/serial wire debug
Tx
Transmit
UART
Universal asynchronous transmitter
VR
Volatile registers
WDT
Watchdog timer
WUT
Wake-up timer