XR18W753 Datasheet, PDF (24/27 Pages) Exar Corporation – SINGLE CHIP 868MHZ TO 956MHZ RF TRANSCEIVER

XR18W753
SINGLE CHIP 868MHZ TO 956MHZ RF TRANSCEIVER
REV. 1.0.0
DATA RATES
FREQUENCY BAND
SYMBOL RATE BIT RATE CHIP RATE -3dB BANDWIDTH
European SRD
25 Ksps
100 Kbps 400 Kcps
200 KHz
North American / Australian ISM 62.5 Ksps 250 Kbps 1 Mcps
500 KHz
950 MHZ
62.5 Ksps 250 Kbps 1 Mcps
500 KHz
NOTE
16-ary symbols
16 chips per symbol
4 bits per symbol
2 symbols per byte
PACKET STRUCTURE
Europe SRD Band
Preamble (all zero-symbols)
Start Frame Delimiter (SFD = 0xA7)
Frame Length (PHR)
Payload Data
Frame Check Sum (FCS)
North American / Australian ISM Band
Preamble (all zero-symbols)
Start Frame Delimiter (SFD = 0xA7)
Frame Length (PHR)
Payload Data
Frame Check Sum (FCS)
950 MHZ Band
Preamble (all zero-symbols)
Start Frame Delimiter (SFD = 0xA7)
Frame Length (PHR)
Payload Data
Frame Check Sum (FCS)
4
1
1
0 - 127
2
10
1
1
0 - 127
2
10
1
1
0 - 127
2
Bytes
Bytes
Bytes
Bytes
Bytes
Bytes
Bytes
Bytes
Bytes
Bytes
Bytes
Bytes
Bytes
Bytes
Bytes
24