Product Specs

Confidential
SPD RFID Reader 2021-09-23
SPD6873160007R07.docx Page 7 of 20
‘F’alse (de-asserted) represents an electrical low
‘T’rue (asserted) represents an electrical high
SIGNAL_THIS_n
Italic capitals with _n (lower case). Represent an active low signal.
‘F’alse (de-asserted) represents an electrical high
‘T’rue (asserted) represents an electrical low
In case of differential signals the positive half should be defined as SIGNAL_THIS_p
VarOrBits
Italic camelcasing. Names of register, bits and variables
<VarOrBits>
Variables embraced in ‘<’ and ‘>’ indicates substitution (indirect reference)
E.g. <Registerbits> means the content/value of that bit, not the bit itself
DefineThisUnit
Camelcasing. A definition of a design unit (mnemonic). E.g. Block diagram units
DEFINE_THIS
Capitals with optional underscores. Other definitions. E.g. Connector mnemonic or
register value constant, e.g. ‘INACTIVE’
Other
Number sign
A positive current flows into the ‘product’. A negative current flows out of the product.
Min, typ and max specifications of negative currents apply to the absolute current value;
E.g. a max specification of -10mA defines that no more than 10mA will flow out.
Min/max values
When a parameter is specified as a negative value, confusion may exist if it should be a
min or max specification. The min/max definitions do not apply to the mathematical
value, but to the semantic meaning of the parameter.
Examples:
Parameter
Specification
Clarification
Current flowing ‘in’ of 10[mA] or less
Max 10[mA]
Max refers to maximum magnitude of current
Current flowing ‘out’ of 10[mA] or less
Max -10[mA]
Max refers to maximum magnitude of current,
not the negative number
Receiver sensitivity of at least -22[dBm]
Min -22[dBm]
Min refers to minimal power and not the
(negative) number
Isolation of at least -40dB
Min -40[dB]
Min refers to minimal isolation attenuation and
not the (negative) number
Crosstalk of maximum -40dB
(Note that this equals isolation of at
least -40dB)
Max -40[dB]
Max refers to the maximum crosstalk and not
the (negative) number.
1.3.2. Abbreviations
HBM
Human Body Model
HW
Hardware
ITA
International Type Approval
NA
Not Applicable
NC
Not Connected
NFCIP
Near Field Communication Interface and Protocol
PCB
Printed Circuit Board
PSD
Power Spectral Density
PSK
Pre-Shared Key
RED
Radio Equipment Directive
RFID
Radio Frequency Identification
SMT
Surface Mount
SPD
Specification Document
S&V
Shock and Vibration
SW
Software
TBD
To Be Defined