Motorola ColdFire MCF5281 User Manual page 49

Table i. Acronyms and Abbreviated Terms (Continued)
Term
POR Power-on reset
PQFP Plastic quad flat pack
PWM Pulse width modulation
QSPI Queued serial peripheral interface
RISC Reduced instruction set computing
Rx Receive
SIM System integration module
SOF Start of frame
TAP Test access port
TTL Transistor transistor logic
Tx Transmit
UART Universal asynchronous/synchronous receiver transmitter
USB Universal serial bus
Terminology Conventions
Table ii shows terminology conventions used throughout this document.
Instruction
cc Logical condition (example: NE for not equal)
An Any address register n (example: A3 is address register 3)
Ay,Ax Source and destination address registers, respectively
Dn Any data register n (example: D5 is data register 5)
Dy,Dx Source and destination data registers, respectively
Rc Any control register (example VBR is the vector base register)
Rm MAC registers (ACC, MAC, MASK)
Rn Any address or data register
Rw Destination register w (used for MAC instructions only)
Ry,Rx Any source and destination registers, respectively
Xi Index register i (can be an address or data register: Ai, Di)
MOTOROLA
Meaning
Table ii. Notational Conventions
Operand Syntax
Opcode Wildcard
Register Specifications
About This Book
Terminology Conventions
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