參數(shù)資料
型號： OL2381AHN
廠商： NXP Semiconductors N.V.
元件分類： 微波射頻器件
英文描述： Highly Integrated Single Chip Sub 1-GHz RF Transceiver
封裝： OL2381AHN<SOT617-3 (HVQFN32)|<<http://www.nxp.com/packages/SOT617-3.html<1<Always Pb-free,;
文件頁數(shù)： 20/43頁
文件大?。?/td> 2978K
代理商： OL2381AHN
AN11017
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Application note
Rev. 2 — 10 May 2011
20 of 43
NXP Semiconductors
AN11017
Transceiver OL2381 using wireless M-BUS
5. TX register settings
This section explains how to set the registers used by the transmitter in this application.
The full transmitter flow chart is shown in
Figure 21
. Not all registers are described in this
application note. Refer to data sheet
Ref. 1
or application note
Ref. 2
for more
information.
5.1 Power Amplifier (PA) configuration
The PAM bits in register TXCON set the voltage for the power amplifier voltage regulator.
PAM0 (PAM bits set to 00) is the recommended value for power amplifier operation. The S
link and the R link use Manchester data, but there are some non-Manchester data bits in
the preamble. As a result, the transmitter should work for all modes in the non-Manchester
mode. The Manchester coding of the payload is performed by the host controller. These
settings are shown in
Figure 22
.
Fig 21. Flow chart of TX registers
PA Configuration:
Register
TXCON
Register
ACON0
or
ACON1
Configuration of the frequency deviation:
FDEV
Configuration of the ramp:
FRMP
Configuration of the TX flags:
- Frequency
- Manchester
- ASK/FSK
- ACON0/ACON1
TX Configuration
Modulation
ASK
see Chapter 7
FSK
019aab773
Activate Transmit command
Configuration of
ACON2
Configuration of the ramp:
ARMP
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