S7R77021 Datasheet, PDF (1/2 Pages) Epson Company – CCD/CIS Signal Processor with Timing Generator

S7R77021
CCD/CIS Signal Processor with Timing Generator
„ OVERVIEW
S7R77021 is an analog front end IC equipped with CCD drive clock generation function that provides high-speed read
rate. This IC incorporates three high-resolution 16bit A/D converters and has control function that drives a shutter-less
CCD. Since this IC adopts RSDS to image data output, it is able to reduce radiation noise. By using this LSI, it easily
provides a scanner system that offers the high quality image.
„ FEATURES
• 16bit, A/D converter 3-channel
• Maximum image data transfer rate (AFE transfer clock): 30MHz
• Maximum 3-channel input (color 3-channel, monochrome 2-channel (odd/even), monochrome 1-channel)
• Analog power input range: 2Vp-p(Full-scale input range to A/D converter: 1Vp-p)
• Programmable gain amp
Gain adjustable range: -6.9dB(0.45-times) to +12.0dB(4.0-times), 6bit resolution
• Programmable offset range: -250mV to +250mV, 8bit resolution
• Built-in CCD/CIS drive clock and AFE drive clock generation function
• 3-line serial interface
• 8bit x 2 multiplex image data output (Low amplitude differential output)
• Package PFBGA121pin (0.8mm pitch) or QFP100pin (0.5mm pitch)
• 3.3V single power supply
• Includes PLL for clock generation (4 to 16-multiplication)
• Internal reference clock frequency: 75MHz < External clock frequency < 120MHz
„ BLOCK DIAGRAM
CLMPLV/
INN
RINP
GINP
BINP
AVDD AGND VDD VSS ANAMON
TR(G,B)P,TR(G,B)N REFP CM1 CM2 REFN
CLAMP
CDS
PGA
BandGAP
Reference
16
16bit ADC
8bit
DAC
CDS
PGA
16
16bit ADC
RSDS
8 _-TX
MUX
8bit
DAC
CDS
PGA
16
16bit ADC
8bit
DAC
8
Offset Registers
RED
GREEN
BLUE
Timing Generator
6
Gain Registers
RED
Host Interface
GREEN
BLUE
PLL
RSDS-RX
XRST,
TSTEN,
TMOD1,
TMOD2
TxSYNC+,TxSYNC-,
TxD0(～7)+
TxD0(～7)-
REXT
D0(～7）、SYNC
SNCK1A～1D,
SNCK2～4,AFECK1～4
SHR,SHG,SHB,
SH,TGCK
CLKIN
CLKINP,
CLKINN
LPF
RxCLK+, RxCLK-
„ APPLICATIONS
Scanner, MFP, Copy-machine, FAX etc.
XCS SCLK SDIO
EPSON