參數(shù)資料
型號(hào)： 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)： 33/43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
33 of 43
NXP Semiconductors
AN11017
Transceiver OL2381 using wireless M-BUS
7. Activate transmit or receive operation
7.1 TX command
To enter the transmit mode, a transmit command is sent to OL2381 on the SPI line. It is
activated by sending the ninth clock edge (eight clock edges for D0 to D7and the ninth
clock for activating the transmitter).
Table 35
shows the transmit command packet.
Table 35.
D0
1
Table 36.
M-Bus radio link
Due to Manchester violations in the preamble, the host controller for links S and R must
create the Manchester data. Therefore, all wireless M-Bus modes must use the “no
Manchester” setup.
7.2 RX command
To enter the receive mode, a receive command is sent to OL2381 on the SPI line. It is
activated by sending the ninth clock edge (eight clock edges for D0 to D7, and the ninth
clock for activating the receiver).
Table 37
shows the receive command packet.
Table 37.
D0
1
1
Table 38.
M-Bus radio link
Transmit packet
D2
transmitter
frequency
selection bits
0
D1
1
D3
D4
data and power
amplifier
synchronization bit
0
D5
power amplifier
control bit
D6
Manchester
generation
bit
0
D7
amplitude
selection
bit
0
1
1
0
0
M-Bus transmit command
OL2381 transmit command
Address is the command
S, T, C, R, F
0xC0
Information
frequency 0, FSK, no Manchester
Receive packet
D2
receiver frequency selection bits
0
D1
0
0
D3
D4
WUPS/PRDA or data reception
0
D5
D6
gain setting
0
D7
0
1
1
M-Bus receive command
OL2381 receive command
Address is the command
S, T, C, R, F
0x85
Information
frequency 0, WUPS, automatic gain
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