13 APPENDIX 4: Abbreviations and acronyms
A scheme that automatically adjusts the gain of the DW1000 receiver
depending on the power in the received signal
A frame sent by the DW1000 in response to a received frame indicating
successful reception. DW1000 allows the automatic generation of such
frames when appropriately configured.
always-on block
(forsaving
configuration)
A section of memory in DW1000 whose contents are retained provided
VDDAON is maintained above the minimum limit specified in the DW1000
data sheet. Intended for saving device configuration during the SLEEP and
DEEPSLEEP states and restoring it thereafter.
burst position
modulation
A modulation scheme in which information is conveyed by the position of
a burst of pulses in one of a number of possible positions in a symbol
binary phase-shift
keying
A modulation scheme in which information is conveyed by whether pulses
are positive or negative
cyclic redundancy
check (an FCS)
Error detecting code appended to the frame in the transmitter to allow
detection of errors at the receiver.
The impulse response of the communications channel between
transmitter and receiver as detected by DW1000 for the most recently
received frame
Anti-spoofing mechanism to allow IEEE 802.15.4 devices to move their
long preamble codes to codes that are different from those in normal use,
see 233[1].
A sudden flow of electrical current between two electrically charged
objects caused by contact, an electrical short circuit or dielectric
breakdown. Can cause failure of semiconductor devices. DW1000 is
resistant to ESD up to the limits specified in the data sheet.
extended unique
identifier
64-bit IEEE device address. Refer to Register file: 0x01 – Extended Unique
Identifier.
frame check
sequence (the
CRC)
A CRC appended to the frame in the transmitter to allow detection of
errors at the receiver.
A frequency to which a carrier frequency is shifted as an intermediate step
in transmission or reception.
Certain regulatory jurisdictions define rules that limit the duration of UWB
transmissions per unit time in certain channels. These rules are generally
referred to as low duty cycle rules
low drop-out
voltage regulator
Linear voltage regulator that requires only a small differential between its
input source voltage and its output regulated voltage below which it can
no longer regulate correctly. DW1000 uses a number of such regulators.
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