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): 28/43頁
文件大小: 2978K
代理商: OL2381AHN
AN11017
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NXP B.V. 2011. All rights reserved.
Application note
Rev. 2 — 10 May 2011
28 of 43
NXP Semiconductors
AN11017
Transceiver OL2381 using wireless M-BUS
6.4 Manchester decoder and clock recovery
The Manchester decoder is activated in register RXCON as shown in
Figure 32
. The
Manchester decoder is used for S and R radio links (
Manchester violations during
preamble are supported). CLOCK_RECOV_TC for clock rate deviation is set to 01
supporting a maximum TX baud rate frequency tolerance of 4 %.
Table 28.
M-Bus radio link
6.5 Slicer configuration
The edge slicer is recommended for FSK modulation as shown in
Figure 33
(SLICERSEL_D[5:4] set to 00). Registers 0x2B, 0x2C and 0x2D are set to 00.
Table 29.
M-Bus radio link
Fig 32. Manchester decoder
M-Bus Manchester decoder register settings
OL2381 register address
RXCON (0x35)
0x2C
0x29
Information
S, R
T, C, F
Manchester 4 % clock deviation inverted at RX
no Manchester 4 % clock deviation inverted at
RX; transparent
019aab784
Fig 33. Slicer configuration
M-Bus slicer configuration register settings
OL2381 register address
RXDCON0 (0x2B) RXDCON1 (0x2C) RXDCON2 (0x2D)
S, T, C, R, F
0x00
Information
0x00
0x00
edge slicer
019aab785
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