IC RF TXRX SNGL-CHIP LP 20-QFN

CC2500-RTR1

Manufacturer Part NumberCC2500-RTR1
DescriptionIC RF TXRX SNGL-CHIP LP 20-QFN
ManufacturerTexas Instruments
CC2500-RTR1 datasheet
 


Specifications of CC2500-RTR1

Frequency2.4GHzData Rate - Maximum500kBaud
Modulation Or Protocol2-FSK, ASK, GFSK, MSK, OOKApplicationsISM, SRD
Power - Output-30dBm ~ 10dBmSensitivity-104dBm
Voltage - Supply1.8 V ~ 3.6 VCurrent - Receiving17mA
Current - Transmitting21.5mA @ 1 dBmData InterfacePCB, Surface Mount
Antenna ConnectorPCB, Surface MountOperating Temperature-40°C ~ 85°C
Package / Case20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFNOperating Temperature (min)-40C
Operating Temperature (max)85COperating Temperature ClassificationIndustrial
Product Depth (mm)4mmProduct Length (mm)4mm
Operating Supply Voltage (min)1.8VOperating Supply Voltage (typ)2.5/3.3V
Operating Supply Voltage (max)3.6VFor Use With296-24121 - DEV WRLSS TOOL FOR MSP430296-23125 - TARGET BRD WIRELESS EZ430-RF2500296-23031 - DEV WRLSS TOOL FOR MSP430/CC2500296-22903 - KIT EVAL MODULE FOR CC2500296-23077 - KIT DEV FOR CC2500/CC2550
Lead Free Status / RoHS StatusContains lead / RoHS non-compliantMemory Size-
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14.3
Byte Synchronization
Byte
synchronization
is
achieved
continuous sync word search. The sync word
is a 16 bit configurable field (can be repeated
to get a 32 bit) that is automatically inserted at
the start of the packet by the modulator in
transmit mode. The demodulator uses this
field to find the byte boundaries in the stream
of bits. The sync word will also function as a
system identifier, since only packets with the
correct predefined sync word will be received if
the sync word detection in RX is enabled in
register MDMCFG2 (see Section 17.1). The
sync word detector correlates against the
user-configured 16 or 32 bit sync word. The
15 Packet Handling Hardware Support
The CC2500 has built-in hardware support for
packet oriented radio protocols.
In transmit mode, the packet handler can be
configured to add the following elements to the
packet stored in the TX FIFO:
A programmable number of preamble
bytes
A two byte synchronization (sync) word.
Can be duplicated to give a 4-byte sync
word (recommended). It is not possible to
only insert preamble or only insert a sync
word.
A CRC checksum computed over the data
field
The recommended setting is 4-byte preamble
and 4-byte sync word, except for 500 kBaud
data rate where the recommended preamble
length is 8 bytes.
In addition, the following can be implemented
on the data field and the optional 2-byte CRC
checksum:
Whitening of the data with a PN9
sequence.
Forward error correction by the use of
interleaving and coding of the data
(convolutional coding).
In receive mode, the packet handling support
will
de-construct
the
data
implementing the following (if enabled):
Preamble detection
Sync word detection
CRC computation and CRC check
correlation threshold can be set to 15/16,
16/16, or 30/32 bits match. The sync word can
by
a
be further qualified using the preamble quality
indicator mechanism described below and/or a
carrier sense condition. The sync word is
configured through the SYNC1 and SYNC0
registers.
In order to make false detections of sync
words
less
preamble quality indication (PQI) can be used
to qualify the sync word. A threshold value for
the preamble quality must be exceeded in
order for a detected sync word to be accepted.
See Section 17.2 on page 34 for more details.
One byte address check
Packet length check (length byte checked
against a programmable maximum length)
De-whitening
De-interleaving and decoding
Optionally, two status bytes (see Table 21 and
Table 22) with RSSI value, Link Quality
Indication, and CRC status can be appended
in the RX FIFO.
Bit
Field Name
7:0
RSSI
Table 21: Received Packet Status Byte 1
(first byte appended after the data)
Bit
Field Name
7
CRC_OK
6:0
LQI
Table 22: Received Packet Status Byte 2
(second byte appended after the data)
Note that register fields that control the packet
packet
by
handling features should only be altered when
CC2500 is in the IDLE state.
SWRS040C
likely,
a
mechanism
called
Description
RSSI value
Description
1: CRC for received data OK (or
CRC disabled)
0: CRC error in received data
The Link Quality Indicator
estimates how easily a received
signal can be demodulated
Page 28 of 89