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MIC3003 Datasheet(PDF) 59 Page - Micrel Semiconductor |
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MIC3003 Datasheet(HTML) 59 Page - Micrel Semiconductor |
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59 / 75 page  Micrel, Inc. MIC3003 November 2009 59 M9999-111209-C hbwhelp@micrel.com or (408) 955-1690 APC Setpoint 0, 1, and 2 (APCSET0, APCSET1, APCSET2) Automatic Power Control Setpoint 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 for all three bytes 0000 0000b = 00h Serial address A6h Byte addresses APCSET0: 3 = 03h APCSET1: 4 = 04h APCSET2: 5 = 05h When the APC is on, the eight-bit signed integer compensation value corresponding to the current temperature is taken from the BIASLUT look-up table, added to the selected APCSET (0, 1, or 2) register and loaded into the VBIAS DAC. If DAC Calibration mode is selected in OEMCAL0, a write to any one of the three APCSETn registers will cause the VBIAS DAC to be updated immediately. DAC Calibration mode disables the output of the BIASLUT lookup table, so the unmodified APCSETn register value propagates directly to the DAC. The eight-bit value presented to the VBIAS DAC is always available for readback in the APCDAC register. 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. Modulation Setpoint 0, 1, and 2 (MODSET0, MODSET1, and MODSET2) Nominal VMOD Setpoint 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 for all three bytes 0000 0000b = 00h Serial address A6h Byte address MODSET0: 6 = 06h MODSET1: 30 = 1Eh MODSET2: 31 = 1Fh When the APC is on, the eight-bit signed integer compensation value corresponding to the current temperature is taken from the MODLUT look-up table, added to the selected MODSET (0, 1, or 2) register and loaded into the VMOD DAC. If DAC Calibration mode is selected in OEMCAL0, a write to any one of the three MODSETn registers will cause the VMOD DAC to be updated immediately. DAC Calibration mode disables the output of the MODLUT lookup table, so the unmodified MODSETn register value propagates directly to the DAC. The eight-bit value presented to the VMOD DAC is always available for readback in the MODDAC register. 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. |
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