sx1231h Semtech Corporation, sx1231h Datasheet - Page 66

• Manufacturer Part Number: sx1231h
• Description: Low Power Integrated Uhf Transceiver With On-chip +20dbm Pa
• Manufacturer: Semtech Corporation

6.3. Transmitter Registers
Table 25 Transmitter Registers
Note
Rev 1 - Oct 2011
ADVANCED COMMUNICATIONS & SENSING
Name
(Address)
RegPaLevel
(0x11)
RegPaRamp
(0x12)
RegOcp
(0x13)
*Power Amplifier truth table is available in Table 10
** Only the16 upper values of OutputPower are accessible
Bits Variable Name
4-0
7-4
3-0
7-5
3-0
7
6
5
4
Pa0On *
Pa1On *
Pa2On *
OutputPower
-
PaRamp
-
OcpOn
OcpTrim
Mode
rw
rw
rw
rw
rw
rw
rw
r
r
Page 66
Default
Value
11111
0000
1001
1010
000
1
0
0
1
Description
Enables PA0, connected to RFIO and LNA
Enables PA1, on PA_BOOST pin
Enables PA2, on PA_BOOST pin
Output power setting, with 1 dB steps
Pout = -18 + OutputPower [dBm] , with PA0
Pout = -18 + OutputPower [dBm] , with PA1**
Pout = -14+ OutputPower [dBm] , with PA1 and PA2**
Pout = -11 + OutputPower [dBm] , with PA1 and PA2, and
high Power PA settings (refer to section 3.3.7)**
unused
Rise/Fall time of ramp up/down in FSK
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
unused
Enables overload current protection (OCP) for the PA:
0
1
Trimming of OCP current:
95 mA OCP by default
Imax
OCP disabled
OCP enabled
=
10 us
62 us
12 us
500 us
100 us
25 us
20 us
15 us
3.4 ms
2 ms
1 ms
250 us
125 us
50 us
40 us
31 us
45
+
5 OcpTrim
×
(
mA
)
SX1231H
DATASHEET
www.semtech.com