XR18W753IL48-F Exar Corporation, XR18W753IL48-F Datasheet - Page 15

• Manufacturer Part Number: XR18W753IL48-F
• Description: IC RF TXRX 868-956MHZ 48QFN
• Manufacturer: Exar Corporation
• Type: RF Receiversr
• Series: -r

Specifications of XR18W753IL48-F

• Package / Case: 48-VFQFN Exposed Pad
• Frequency: 868MHz ~ 954MHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: DSSS
• Applications: ISM
• Power - Output: 0dBm
• Sensitivity: -94dBm
• Voltage - Supply: 2.2 V ~ 3.6 V
• Current - Receiving: 19mA
• Current - Transmitting: 22mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Operating Frequency: 100 KHz, 400 KHz
• Operating Supply Voltage: 2.2 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Noise Figure: 12 dB
• Supply Current: 0.5 mA, 1.7 mA, 19 mA, 22 mA
• Data Rate: 250Kbps
• Rf Ic Case Style: QFN
• No. Of Pins: 48
• Supply Voltage Range: 2.97V To 3.63V
• Operating Temperature Range: -40°C To +85°C
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

REV. 1.0.0
3.2 DETAILED REGISTERS DESCRIPTIONS
A
0x13
0x14
0x15
0x16-0x1F
DDRESS
REGISTER NAME
ED_AV_TIME
MODEM_ED
MODEM_LQI
Reserved
DESCRIPTION
Measurement time for ED Measurement
b[3:0] = 0000 --> 8 symbols
b[3:0] = 0001 --> 5.0 mSec
b[3:0] = 0010 --> 5.5 mSec
b[3:0] = 0011 --> 6.0 mSec
b[3:0] = 0100 --> 6.5 mSec
b[3:0] = 0101 --> 7.0 mSec
b[3:0] = 0110 --> 7.5 mSec
b[3:0] = 0111 --> 8.0 mSec
b[3:0] = 1000 --> 8.5 mSec
b[3:0] = 1001 --> 9.0 mSec
b[3:0] = 1010 --> 9.5 mSec
b[3:0] = 1011 --> 10.0 mSec
b[3:0] = 11xx --> 10.0 mSec
b[7:4] not used
Via this register, the ED measurement time can be defined. In case
value 0 is chosen, the measurement time is compliant to the defini-
tion of the IEEE802.15.4b standard. In the 902-928 MHz band, the
measurement time equals 128us. For the 868 MHz band, this sym-
bol time equals 320us.
LQI Value, updated as a result of successful ED measurement.
The result of the ED measurement is available in this register.
The value is normalized and on average will be independent from
the ED measurement time (ED_AV_TIME). Note that the value of
MODEM_ED also depends on the content of ED_THRESH (0x2E).
LQI Value, updated after complete frame reception.
During reception of a data packet, the correlation values of the
symbol mapping is accumulated and divided by the number of sym-
bols in the packets. The number is a normalized Link Quality Indi-
cation.
SINGLE CHIP 868MHZ TO 956MHZ RF TRANSCEIVER
15
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XR18W753
T
R/W
YPE
R
R
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