參數(shù)資料
型號(hào)： M66335FP
廠商： Mitsubishi Electric Corporation
英文描述： FACSIMILE IMAGE DATA PROCESSOR
中文描述： 傳真寄發(fā)圖像數(shù)據(jù)處理器
文件頁(yè)數(shù)： 4/57頁(yè)
文件大?。?/td> 656K
代理商： M66335FP
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, V
GCAO
, is obtained by the following equation:
V
GCAO
= V
LEVAJ
+ G
V
×
V
IN
,
where,
V
LEVAJ
: voltage at LEVAJ
V
IN
: input signal
G
V
: gain of the gain control circuit
V
IN
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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