XR18W753
15
REV. 1.0.0 SINGLE CHIP 868MHZ TO 956MHZ RF TRANSCEIVER
0x13 ED_AV_TIME 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.
R/W
0x14 MODEM_ED 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).
R
0x15 MODEM_LQI 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.
R
0x16-0x1F Reserved - -
3.2 DETAILED REGISTERS DESCRIPTIONS
ADDRESS REGISTER NAME DESCRIPTION TYPE