TMS320F datasheet(370/389 Pages) TI

370 / 389 page

Glossary

D-10

MIPS:

Million instructions per second.

MP/MC pin:

A pin that indicates whether the processor is operating in micro-

processor mode or microcomputer mode. MP/MC high selects micropro-

cessor mode; MP/MC low selects microcomputer mode.

MSB:

Most significant bit. The highest order bit in a word. When used in

plural form (MSBs), refers to a specified number of high-order bits, begin-

ning with the highest order bit and counting to the right. For example, the

eight MSBs of a 16-bit value are bits 15 through 8. See also

LSB.

MSTACK:

See

microstack.

multiplier:

A part of the CPU that performs 16-bit

× 16-bit multiplication and

generates a 32-bit product. The multiplier operates using either signed

or unsigned 2s-complement arithmetic.

next AR:

See

next auxiliary register.

next auxiliary register:

The register that is pointed to by the auxiliary regis-

ter pointer (ARP) when an instruction that modifies ARP is finished

executing. See also

auxiliary register; current auxiliary register.

NMI:

A hardware interrupt that uses the same logic as the maskable inter-

rupts but cannot be masked. It is often used as a soft reset. See also

maskable interrupt; nonmaskable interrupt.

nonmaskable interrupt:

An interrupt that can be neither masked by the

interrupt mask register (IMR) nor disabled by the INTM bit of status

NPAR:

Next program address register. Part of the program-address genera-

tion logic. This register provides the address of the next instruction to the

program counter (PC), the program address register (PAR), the micro

stack (MSTACK), or the stack.

operand:

A value to be used or manipulated by an instruction; specified in

the instruction.

operand-fetch phase:

The third phase of the pipeline; the phase in which

an operand or operands are fetched from memory. See also

pipeline;

instruction-fetch phase; instruction-decode phase; instruction-execute

phase.

TMS320F Datasheet(PDF) 370 Page - Texas Instruments

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