13 / 28 page
TH7121
300 to 930MHz
FSK/FM/ASK Transceiver
3901007121
Page 13 of 28
Data Sheet
Rev. 001
Jan. 2002
PR
EL
IM
INA
RY
B-word
Symbol
Bits
No.
Description
Software button
RT9:RT0
RT9:RT0
[9:0]
10
Reference divider ratio in TX mode
Min2:Min0
[12:10]
3
Select minimum value of RO active current:
ROMIN
‘000’
‘001’
‘010’
‘011’
‘100’
‘101’
‘110’
‘111’
0 µA
50 µA
100 µA
150 µA
200 µA
250 µA
300 µA
350 µA
Max2:Max0
[15:13]
3
Select maximum value of RO active current:
ROMAX
‘000’
‘001’
‘010’
‘011’
‘100’
‘101’
‘110’
‘111’
0 µA (RO is off)
50 µA
100 µA
150 µA
200 µA
250 µA
300 µA
350 µA
EnFm
[16]
1
Test bit. Forced '0' for correct functioning.
EnAdj
[17]
1
Test bit. Forced '0' for correct functioning.
LNAHYST
[18]
1
Enable LNA hysteresis:
LNAHYST
‘1’
‘0’
disabled
enabled
EnDelPLL
[19]
1
Enable delayed start of the PLL:
EnDelPLL
‘1’
‘0’
disabled
enabled.
not used
[20]
1
‘X’
not used
[21]
1
‘X’
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
