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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ML7344J датащи(PDF) 100 Page - List of Unclassifed Manufacturers |
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ML7344J датащи(HTML) 100 Page - List of Unclassifed Manufacturers |
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100 / 151 page  FEDL7344C/E/J-04 ML7344C/E/J 100/151 ■Resister setting ●Initialization table ML7344 needs initilaization. For the value to each register, please refer to the “ML7344 Initilaization Table” document and “ML7344_RegisterSettingTool”. ●RX mode setting ML7344 has two RX modes. One is “High sensitivity mode” that is tuned for minimum RX sensitivity. It achieves -118dBm under condition of BER<0.1%, 4.8kbps and Fdev=3kHz. The other is “High linearity mode” that improves linearity about 6dB, so characteristics of blocking and power detection rang are grown instead of sensitivity degradation about 3dB. For swtiching RX mode, set the register [LNA_GAIN1:B2 0x28] as below. RX mode [LNA_GAIN1:B2 0x28] High sensitivity mode 0xF7 High linearity mode 0x07 ●BER measurement setting The following registers setting are necessary for RX side when measuring BER. [DIO_SET: B0 0x0C] = 0x40 [MON_CTRL: B0 0x4D] = 0x80 [GPIO0_CTRL: B0 0x4F] to [GPIO3_CTRL: B0 0x52] for setting DCLK/DIO output pins. [GAIN_HTOM: B1 0x0E] = 0x1E When termiate BER measurement and reurn from RX state, Force TRX_OFF should be issued by SET_TRX[3:0] ([RF_STATUS:B0 0x0b(3-0]) =0b0011. ●Wireless M-bus setting The following parameter tables are example for programing each Wireless M-Bus mode (N/F). ●Mode N (Channel frequency: 169.4125MHz, Modulation: GFSK, Data Rate: 4800bps) Register Parameter Name Address Setting Value TXFREQ_I B1 0x1B 0x0D TXFREQ_FH B1 0x1C 0x00 TXFREQ_FM B1 0x1D 0x81 TX frequency TXFREQ_FL B1 0x1E 0xF8 RXFREQ_I B1 0x1F 0x0D RXFREQ_FH B1 0x20 0x00 RXFREQ_FM B1 0x21 0x81 RX frequency RXFREQ_FL B1 0x22 0xF8 CH_SPACE_H B1 0x23 0x07 Channel space CH_SPACE_L B1 0x24 0xE0 PLL frequency division PLL_DIV_SET B1 0x1A 0x10 |
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