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Glossary
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Glossary
little endian: An addressing protocol in which bytes are numbered from right
to left within a word. More significant bytes in a word have higher-num-
bered addresses. Endian ordering is specific to hardware and is deter-
mined at reset. See also big endian.
M
µ-law companding: See compress and expand (compand).
maskable interrupt: A hardware interrupt that can be enabled or disabled
through software.
MCBSP: See multichannel buffered serial port; see also MCBSP module.
MCBSP module: MCBSP is an API module that contains a set of functions
for configuring the McBSP registers.
memory map: A graphical representation of a computer system’s memory,
showing the locations of program space, data space, reserved space,
and other memory-resident elements.
memory-mapped register: An on-chip register mapped to an address in
memory. Some memory-mapped registers are mapped to data memory,
and some are mapped to input/output memory.
most significant bit (MSB): The highest order bit in a word.
multichannel buffered serial port (McBSP): An on-chip full-duplex circuit
that provides direct serial communication through several channels to
external serial devices.
multiplexer: A device for selecting one of several available signals.
N
nonmaskable interrupt (NMI): An interrupt that can be neither masked nor
disabled.
O
object file: A file that has been assembled or linked and contains machine
language object code.
off chip: A state of being external to a device.
on chip: A state of being internal to a device.