TH71221_15 Datasheet, PDF (21/44 Pages) Melexis Microelectronic Systems – FSK/FM/ASK Transceiver

TH71221
27 to 930MHz
FSK/FM/ASK Transceiver
5.1 Register Overview
WORD
DATA
MSB
LSB
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit No.
0 0 0 0 0 0 0 1 1 1 1 1 0 0 Depends on FS0/FS1 voltage level after power up default
A
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit No.
0 1 0 1 1 1 0 0 1 1 1 0 1 0 Depends on FS0/FS1 voltage level after power up default
B
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit No.
1000
Depends on FS0/FS1 voltage level after power up
default
C
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit No.
1100100
Depends on FS0/FS1 voltage level after power up
default
D
5.1.1 Default Register Settings for FS0, FS1
FS1 FS0
Channel
frequency
0
0
868.30 MHz
0
1
433.92 MHz
1
0
915.00 MHz
1
1
315.00 MHz
Note: d – decimal code
BAND
1
0
1
0
VCOCUR
[1:0]
11
01
11
00
RR
[9:0]
16d
32d
32d
18d
NR
[ 16 :0 ]
1919d
1894d
4047d
766d
RT
[ 9 :0 ]
16d
32d
32d
18d
NT
[ 16 : 0 ]
1943d
1942d
4095d
793d
A detailed description of the registers function and their configuration can be found in the following sections.
39010 071221
Rev. 009
Page 21 of 44
Data Sheet
Nov/15