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M66335FP Datasheet(PDF) 4 Page - Mitsubishi Electric Semiconductor |
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M66335FP Datasheet(HTML) 4 Page - Mitsubishi Electric Semiconductor |
4 / 57 page MITSUBISHI 〈DIGITAL ASSP〉 M66335FP FACSIMILE IMAGE DATA PROCESSOR 4 Item Power supply GND Sensor signal input part Gain control circuit Black level clamping circuit A/D converter Pin name AVCC DVCC AGND DGND AIN C1, C2 LEVAJ GCAO BCMI BCMV BCMO Vri+ Vri– ADIN VWL VBL Input/output – – – – Input Input Input Output Input Input Output Input Input Input Output Output Function Analog power supply pin (rated supply voltage: 5V) Digital power supply pin (rated supply voltage: 5V) Analog ground pin Digital ground pin Pin to input analog signals output from CCD or CIS (Signals from CCD are input through capacity coupling and those from CIS, with no clamping levels, are input directly.) Pin to control the frequency characteristic of the gain control circuit Pin to control the DC level of output signals of the gain control circuit. The output voltage, VGCAO, is obtained by the following equation: VGCAO = VLEVAJ + GV × VIN, where, VLEVAJ: voltage at LEVAJ VIN: input signal GV: gain of the gain control circuit VIN is the signal element corresponding to the signal level clamped through the input clamping circuit for CCD·CIS3 input or to the GND level for CIS1·CIS2 input. Signal output pin of the gain control circuit Signal input pin to the black clamping circuit. Use this with capacity coupling with the GCAO pin. Pin to set the black level clamping voltage. Sets the black level of signals output from the BCMO pin for CCD signal processing. Signal output pin of the black level clamping circuit Output of the circuit to generate the A/D full-scale point reference voltage (3.8V). Connected with VWL through the buffer inside the IC. To change the A/D reference voltage range, input a DC voltage from this pin. Output of the circuit to generate the A/D zero point reference voltage (1.8V). Connected with VBL through the buffer inside the IC. To change the A/D reference voltage range, input a DC voltage from this pin. Signal input pin to the A/D converting circuit. Use this by connecting with the BCMO pin for CCD or with the GCAO pin for CIS. Input signals in the voltage range (1.8V to 3.8V) set through VWL and VBL. Output of the circuit generating the A/D full-scale reference voltage (3.8V). Connected inside the IC with the A/D converter. Output of the circuit generating the A/D zero point reference voltage (1.8V). Connected inside the IC with the A/D converter. DESCRIPTION OF ANALOG PIN FUNCTIONS (Cont.) |
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