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): 32/43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
32 of 43
NXP Semiconductors
AN11017
Transceiver OL2381 using wireless M-BUS
6.9 Preamble detection
The OL2381 has preamble pattern recognition. The value of the preamble
(synchronization word) is known in advance so the value of the preamble in the receiver is
configured according to this value. Five registers are used to configure the preamble; see
Figure 38
. Register PREACON (address: 0x3A) configures the preamble length and the
number of chip errors allowed during preamble detection. The value of the preamble that
the receiver must recognize, is set in registers PREA0 to PREA3 (addresses: 0x3B to
0x3E).
Table 33.
M-Bus radio link
Table 34.
M-Bus radio
link
To avoid too many fail recognitions due to noise, increase the value in register 0x3A.
Good results can be found by setting register 0x3A to a value of 0x14 (length = 20).
Fig 38. Preamble configuration registers
M-Bus preamble structure
Preamble
Header
n
×
(01)
n
×
(01)
n
×
(01)
Information
Synchronization word
000111011010010110
0000111101
00011101010010110
S, R
T, C
F
n
15 or n
39 or n
279
n
19
n
39
M-Bus preamble length and value register settings
OL2381 register addre
PREACON
(0x3A)
(0x3B)
0x12
0x96
0x0A
0x3D
0x11
0x96
Information
PREA0
PREA1
(0x3C)
0x76
0x54
0x3A
PREA2
(0x3D)
0x54
0x55
0xAA
PREA3
(0x3E)
0x55
0x55
0xAA
S, R
T, C
F
length = 18, no chip errors
length = 10, no chip errors
length = 17, no chip errors
019aab790
相關(guān)PDF資料
PDF描述
OL3216TC-DPG CERAMIC BASIC TYPE HIGH-PERFORMANCE LEDS
OLDA23TZ-WPG REFLECTOR COATING TYPE HIGH-PERFORMANCE LEDS
OLDPM8T1-L1G MOLDING TYPE SMD LED LAMPS
OLS133TR-DPG SURFACE MOUNT LED LAMPS
OM4068H LCD driver for low multiplex rates
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
OL2381AHN/C0B,515 功能描述:射頻收發(fā)器 Single Chip 1-GHz 射頻收發(fā)器 RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
OL2381AHN/C0B515 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述:
OL2385AHN/00100Y 功能描述:RF WIRELESS PLATFORM UHF 制造商:nxp usa inc. 系列:- 包裝:剪切帶(CT) 零件狀態(tài):在售 類型:TxRx + MCU 射頻系列/標(biāo)準(zhǔn):- 協(xié)議:- 調(diào)制:ASK,F(xiàn)SK 數(shù)據(jù)速率(最大值):- 功率 - 輸出:14dBm 靈敏度:-124dBm 存儲容量:- 串行接口:SPI,UART GPIO:12 電壓 - 電源:1.9 V ~ 5.5 V 電流 - 接收:- 電流 - 傳輸:29mA 工作溫度:-40°C ~ 85°C 封裝/外殼:48-VFQFN 裸露焊盤 標(biāo)準(zhǔn)包裝:1
OL2385AHN/001A0Y 功能描述:LOW-POWER MULTI-CHANNEL UHF RF W 制造商:nxp usa inc. 系列:- 包裝:剪切帶(CT) 零件狀態(tài):停產(chǎn) 類型:TxRx + MCU 射頻系列/標(biāo)準(zhǔn):- 協(xié)議:- 調(diào)制:ASK,F(xiàn)SK 數(shù)據(jù)速率(最大值):- 功率 - 輸出:14dBm 靈敏度:-124dBm 存儲容量:- 串行接口:SPI,UART GPIO:12 電壓 - 電源:1.9 V ~ 5.5 V 電流 - 接收:- 電流 - 傳輸:29mA 工作溫度:-40°C ~ 85°C 封裝/外殼:48-VFQFN 裸露焊盤 標(biāo)準(zhǔn)包裝:1
OL2405 制造商:Ohmite Mfg Co 功能描述: