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MIC3003 データシート(PDF) 60 Page - Micrel Semiconductor |
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MIC3003 データシート(HTML) 60 Page - Micrel Semiconductor |
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60 / 75 page  Micrel, Inc. MIC3003 November 2009 60 M9999-111209-C hbwhelp@micrel.com or (408) 955-1690 IBIAS Fault Threshold (IBFLT) Bias Current Fault Threshold 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 7 = 07h When the Fault Comparator is running, the eight-bit signed integer compensation value corresponding to the current temperature is taken from the IFTLUT look-up table, added to IBFLT, and used for comparison with the laser bias current value for fault generation. Faults are generated if the bias current value exceeds the compensated (LUT offset) IBFLT register contents. If DAC Calibration mode is selected in OEMCAL0, the output of the IFTLUT lookup table is disabled, so the unmodified IBFLT register value propagates directly to the Fault Comparator DAC. A valid OEM password is required for access to these registers. These registers are non-volatile and will be maintained through power and reset cycles. Transmit Power Fault Threshold (TXFLT) 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 8 = 08h When the Fault Comparator is running the TXFLT register value is used for comparison with the transmit power value for fault generation. Faults are generated if the transmit power exceeds the TXFLT register contents. 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. Loss-Of-Signal Threshold (LOSFLT) 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 9 = 09h When the Fault Comparator is running, a fault is generated if the received power is lower than the LOSFLT value set in this register. 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. |
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