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MIC3003 数据表(PDF) 68 Page - Micrel Semiconductor |
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MIC3003 数据表(HTML) 68 Page - Micrel Semiconductor |
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68 / 75 page  Micrel, Inc. MIC3003 November 2009 68 M9999-111209-C hbwhelp@micrel.com or (408) 955-1690 Signal Detect Threshold (LOSFLTn) D[7] read/write D[6] read/write D[5] read/write D[4] read/write D[3] read/write D[2] read/write D[1] read/write D[0] read/write Default value 0000 0000b = 00h Serial address A6h Byte address 23 = 17h This eight-bit register works in conjunction with the LOSFLT register to provide hysteresis and control the operation of the loss of signal comparator. The comparator’s output, RXLOS, is asserted when the input on VRX falls below the level in LOSFLT. The output will then be deasserted when the VRX signal rises above the level in LOSFLTn. The input signal is subject to scaling by the RXPOT. If the LOS comparator is disabled, i.e., LOSDIS = 1, this register is ignored. A valid OEM password is required for access to this register. This register is non-volatile and will be maintained through power and reset cycles. RX EEPOT Tap Selection (RXPOT) D[7] reserved read-only D[6] reserved read-only D[5] reserved read-only D[4] RXPOT[4] read/write D[3] RXPOT[3] read/write D[2] RXPOT[2] read/write D[1] RXPOT[1] read/write D[0] RXPOT[0] read/write Default value 0000 0000b = 00h Serial address A6h Byte address 24 = 18h This register is non-volatile and will be maintained through power and reset cycles. A valid OEM password is required for access to these registers. Bit(s) Function Operation D[7:5] Reserved Reserved. Always write as zero; reads return zeros. D[4:0] RXPOT tap selection: Adjust gain of the receive power measurement: 00000 = No divider action 00001 = 31/32 00010 = 30/32 • • • 11110 = 2/32 11111 = 1/32 |
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