TH7121 Datasheet, PDF (15/28 Pages) List of Unclassifed Manufacturers – 300 to 930MHz FSK/FM/ASK Transceiver

TH7121
300 to 930MHz
FSK/FM/ASK Transceiver
D-word
Symbol
Bits No.
Software button
Description
NT16:NT0
NT16:NT0
[16:0] 17
Feedback divider ratio in TX mode
ER_TM1:ER_TM0 [18:17] 2
Select maximum enabled PFD output error for lock detecting
(in reference frequency clocks):
‘00’
2 clocks
ER_TM1:ER_TM0
‘01’
4 clocks
‘10’
8 clocks
PRELIMINARY ^{‘11’}
16 clocks
LD_TM1:LD_TM0 [20:19] 2
Select minimum number of PFD reference frequency clocks
before lock detecting:
‘00’
4 clocks
LD_TM1:LD_TM0
‘01’
16 clocks
‘10’
64 clocks
‘11’
256 clocks
MODUL_CTR [21]
1 Select mode of modulation control:
MODCTRL
‘0’
external modulation control
‘1’
internal modulation control
3901007121
Rev. 001
Page 15 of 28
Data Sheet
Jan. 2002