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  Holtek Semiconductor Electronic Components Datasheet  

HT82V70 Datasheet

CIS Timing Generator and Shading Correction

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HT82V70
Two 6-Channel, up to 240MSPS
CIS Timing Generator and Shading Correction
Features
• 3.3V operating voltage
• Up to 240MSPS for two 6-channel inputs
• Programmable CIS module timing generator
• Image sensor shading correction
0 ~ -255 8-bit dark shading (offset) correction
0.00x~8.00x 10-bit white shading (gain) correction
Embedded memory for up to 6 component coefficients
of 1584 sensor elements
• Flexible frame start/stop control mechanism
• Provide Image line information
line index
Left and right boundary of a line
max/min/summation/histogram information of a line
• 8/16-bit image data output in VPFE or EMIF interface
• 3-wire/4-wire SPI interface
• 2-wire I2C interface
• Built in voltage comparator for roller input signal
• 100-pin LQFP package
Applications
• Double-sided scanner currency detectors
General Description
The HT82V70 is a fully integrated device for CIS
imaging application. It features programmable timing
generator and image sensor shading correction to
sample and condition the outputs of CIS (Contact
Image Sensor) arrays for high-speed double-sided
scanner applications.
With up to two AFE HT82V48 ICs, it can support
two 3~6-channel inputs up to 240MSPS. Intelligent
image sensor shading correction is then employed on
each sensor element. The sensor data can be not only
corrected but also averaged per line for black level
calculations. The Video Processing Front End (VPFE)
Interface multiplexed shaded ADC’s outputs two
high-bytes for each ADC’s output or one 16-bit wide
output for each ADC. A pixel clock PCLK transports
the 16-bit wide data to the output port.
The internal registers are programmed through a
2-wire I2C or 3-wire/4-wire SPI interface, for timing
control, gain, offset and operating mode adjustments.
Block Diagram
CIS1_SP
CIS1_MODE
CIS1_nLED
CIS_CLK
CIS2_SP
CIS2_MODE
CIS2_nLED
AFE1_ADCK
AFE1_SHD
AFE1_CLP
AFE1_DIN[15:0]
AFE2_ADCK
AFE2_SHD
AFE2_CLP
AFE2_DIN[15:0]
n = R/G/B/IR/UV/IR2
CIS1
I/F
DLL
Timing
Generator
CIS2
I/F
Shading
RAM
PLL POR
LDO
AFE1
I/F
AFE2
I/F
+ X ISP1
+ X ISP2
MUX
LINE
BUF
M
U
X
SPI
V
P
I
F
/
E
M
I
F
A
ROLLER_IN
FRM_START
ROLLER_OUT
SCSN
SCK
SDI
SDO
PCLK_MWAIT
HD_MWEB
VD_MOEN
VP_D[15:0]
Rev. 1.00
1 January 12, 2017


  Holtek Semiconductor Electronic Components Datasheet  

HT82V70 Datasheet

CIS Timing Generator and Shading Correction

No Preview Available !

System Application Diagram
HT82V70
Figure 1. Two 3-ch CISMs System Diagram
Pin Assignment
Figure 2. Two 6-ch CISMs System Diagram
SCSN
SDI
SCK
SDO
CIS2_GLED
CIS2_RLED
CIS2_BLED
CIS2_IRLED
CIS2_UVLED
CIS2_IR2LED
CIS2_MODE
CIS2_SP
PVDD33
CIS_CLK
PVSS
VP_D15
VP_D14
VP_D13
VP_D12
VP_D11
VP_D10
VP_D9
VP_D8
PVDD33
VP_D7
1100999897969594939291908988 87868584838281807978777675
2 74
3 73
4 72
5 71
6 70
7 69
8 68
9 67
10 66
11 65
12 HT82V70
13 100 LQFP-A
14
64
63
62
15 61
16 60
17 59
18 58
19 57
20 56
21 55
22 54
23 53
24 52
25 51
262728 293031 3233343536373839404142434445 4647484950
AVSS
PVDDREG
V18_FLT
DVSS
ROLLER_IN
FRM_START
ROLLER_OUT
AFE1_DIN15
AFE1_DIN14
AFE1_DIN13
AFE1_DIN12
AFE1_DIN11
PVSS
AFE1_SHD
AFE1_CLP
AFE1_ADCK
PVDD33
AFE1_DIN10
AFE1_DIN9
AFE1_DIN8
AFE1_DIN7
AFE1_DIN6
AFE1_DIN5
AFE1_DIN4
AFE1_DIN3
Rev. 1.00
2 January 12, 2017


Part Number HT82V70
Description CIS Timing Generator and Shading Correction
Maker Holtek Semiconductor
Total Page 30 Pages
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