xe1202 ETC-unknow, xe1202 Datasheet - Page 16

• Manufacturer Part Number: xe1202
• Description: Low-power, Integrated Uhf Transceiver
• Manufacturer: ETC-unknow

Example of LO frequency setting in FSParam_Freq
5.2.3
16
DataOut register
RTParam_Fsel = 0
Bit 7
FSParam_Freq
DataOut_RSSI
FSParam_BR
DataOut_FEI
Byte Address
00000000
00000000
00000000
11111111
11111111
Name
Name
When
00011
Bit 0
Bits
Bits
2-0
7-0
7-0
Bit 7
7-6
7-0
Byte Address
00000000
00000001
00000010
11111111
11111110
00100
Byte Address
Byte Address
Bit 0
00010
00011
00100
00101
00101
F0 = 434.0 MHz for the 433-435 MHz band
F0 = 869.0 MHz for the 868-870 MHz band
F0 = 915.0 MHz for the 902-928 MHz band
F0, where F0 depends on the selected
frequency band (see FSParam_Band )
Note: reference frequency = 39.0 MHz
Bit rate:
0 0 0 -> 4.8 kb/s
0 0 1 -> 9.6 kb/s
0 1 0 -> 19.2 kb/s
0 1 1 -> 38.4 kb/s
1 0 0 -> 76.8 kb/s
others -> not valid
LO frequency in 2’s-complement
representation:
00…0 -> f
0X…X -> f
1X…X -> f
MSB = bit 7 of byte at pos. 00011
LSB = bit 0 of byte at pos. 00100
See example below
Description
RSSI output:
0 0 -> lowest level
0 1 -> 2
1 0 -> 3
1 1 -> highest level
FEI output:
Output of the up/down counter in
2’s-complement representation
MSB = bit 7
Resulting LO setting
middle of the range
middle of the range
F0 + 2 * 500 Hz
F0 – 2 * 500 Hz
F0 + 500 Hz
F0 – 500 Hz
nd
rd
level
LO
level
LO
LO
Description
= middle of the range
= higher than the
= lower than the
Data Sheet
XE1202
D0211-105