EVB7122
27 to 930MHz Transceiver
Evaluation Board Description
3.1
Register Overview
DATA
LSB
9
8
7
6
5
4
3
2
1
0
Bit No.
default
WORD
MSB
23 22 21 20 19 18 17 16 15 14 13 12 11 10
0
0
0
0
DATAPOL
0
MODSEL
0
CPCUR
0
LOCKMODE
1
PACTRL
1
1
1
Set to 1
1
LNAGAIN
0
0
Depends on FS0/FS1 voltage level after power up
TXPOWER
[ 1 :0 ]
OPMODE
[1:0]
A
23 22 21 20 19 18 17 16 15 14 13 12 11 10
0
1
0
PKDET
1
Set to 1
1
DELPLL
1
LNAHYST
0
0
1
1
ROMAX
[2:0]
1
0
1
ROMIN
[2:0]
0
9
8
7
6
5
RR
[9:0]
4
3
IDLE
2
1
0
Bit No.
default
Depends on FS0/FS1 voltage level after power up
B
23 22 21 20 19 18 17 16 15 14 13 12 11 10
1
0
0
LNACTRL
0
VCOCUR
[ 1 :0 ]
PFDPOL
BAND
9
8
7
6
5
RT
[9:0]
4
3
OA2
AFC
2
1
0
Bit No.
default
Depends on FS0/FS1 voltage level after power up
C
23 22 21 20 19 18 17 16 15 14 13 12 11 10
1
1
0
MODCTRL
0
1
0
0
9
NR
[ 16 : 0 ]
8
7
6
5
4
3
2
1
0
Bit No.
default
Depends on FS0/FS1 voltage level after power up
D
3.1.1
FS1
0
0
1
1
Note:
Default Register Settings for FS0, FS1
FS0
0
1
0
1
Channel
frequency
868.30 MHz
433.92 MHz
915.00 MHz
315.00 MHz
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
d – decimal code
A detailed description of the registers function and their configuration can be found in the following sections.
39012 07122 02
Rev. 005
Page 8 of 24
NT
[ 16 : 0 ]
LDTM
[ 1 :0 ]
ERTM
[ 1 :0 ]
EVB Description
June/07
MELEXIS [ Melexis Microelectronic Systems ]
