AS3977-BQFT austriamicrosystems, AS3977-BQFT Datasheet - Page 29

• Manufacturer Part Number: AS3977-BQFT
• Description: IC RF TRANSMITTER FSK 16-QFN
• Manufacturer: austriamicrosystems

Specifications of AS3977-BQFT

• Frequency: 300MHz ~ 928MHz
• Applications: ISM
• Modulation Or Protocol: FSK
• Data Rate - Maximum: 100 kbps
• Power - Output: 10dBm
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Current - Transmitting: -

AS3977
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
Table 22. Configuration Registers
Default settings given are recommendations according to application note (not set at power up).
Table 23. Configuration Registers Description
www.austriamicrosystems.com
Synthesizer section
G
M
O
H
K
N
F
J
L
I
A<11:15>
Register
A<10:9>
A<1:0>
A<4:3>
A<7:5>
A<2>
A<8>
PSC
<0>
15
reserved
CLKS<1:0>
14
reserved
PREOP2<4:0>
PAOP1
<1:0>
reserved
INT3<5:0>
13
reserved
SEL<1:0>
ARSDRS
ARSRST
CPSEC
Name
CPCS
<1:0>
<2:0>
<1:0>
DIVR
12
RPAOV1
DF<7:0>
MCCDS
<2:0>
ASC<1:0>
11
FRAC4<11:0>
LD
10
PAOP2
<1:0>
application dependent
application dependent
ATCPH<3:0>
INT4<9:0>
9
Default Value
MCCS
<1:0>
Revision 3.5
00000
010
11
RPAOV2
0
0
8
<1:0>
7
LS
TCV<7:0>
6
Frequency band selection
0 (00): 315MHz frequency band
1 (01): 434 MHz and ARIB frequency band
2 (10): 868MHz frequency band
3 (11): 915MHz frequency band
Automatic range select reset, active high
Automatic range select division ratio setting
0 (00): f
1 (01): f
2 (10): f
3 (11): f
Reference divider division ratio setting must
be set to Binary 010
Charge pump sections setting
0: One section active
1: Two sections active
Charge pump current setting
0 (00): 12.5 µA/Section
1 (01): 25.0 µA/Section
2 (10): 37.5 µA/Section
3 (11): 50.0 µA/Section
reserved Bits: set to Binary 00000 for normal
mode of operation
FRAC3<15:6>
LT
5
TS<9:0>
reserved
REF
REF
REF
REF
reserved
FSK1
/512
GFCS<7:0>
/64
/128
/256
4
reserved
Description
3
FRAC4<15:12>
PREOP1<4:1>
INT3<9:6>
2
PSC<2:1>
1
29 - 45
FSK2
0