S7R77021 epson ccd/cis signal processor with timing generator ? overview S7R77021 is an analog front end ic equipped with ccd drive cl ock generation function that provides high-speed read rate. this ic incorporates three high-resolution 16bit a/d c onverters and has control functi on that drives a shutter-less ccd. since this ic adopts rsds to image dat a output, it is able to reduce radiati on 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, monoc hrome 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 af e drive clock generation function ? 3-line serial interface ? 8bit x 2 multiplex image data output (low amplitude di fferential 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 ? applications scanner, mfp, copy-machine, fax etc. clmplv/ inn xrst, tsten, tmod1, tmod2 txsync+,txsync-, txd0(7)+ txd0(7)- snck1a1d, snck24,afeck14 shr,shg,shb, sh,tgck gain registers clkin offset registers clkinp, clkinn lpf xcs sclk sdio binp refn cm1 refp cm2 anamon avdd tr(g,b)p,tr(g,b)n vss vdd agn d rext rxclk+, rxclk- rinp ginp d0(7sync mux 8bit dac 8bit dac 8bit dac 8 16bit adc 8 clamp timing generator bandgap reference red green blue red green blue 6 cds pga cds pga cds pga host interface 16bit adc 16bit adc 16 16 16 rsds -tx rsds-rx pll
S7R77021 semiconductor operations division seiko epson corporation ic sales department ic marketing group 421-8 hino, hino-shi, tokyo 191-8501, japan phone: 042-587-5814 fax: 042-587-5117 notice: no part of this material may be reproduced or duplicated in any fo rm or by any means without the written permission of seiko ep son. seiko epson reserves the right to make c hanges to this material without notice. se iko epson does not assume any liability of a ny kind arising out of any inaccuracies contained in this material or due to its application or use in any product or circuit and, furt her, there is no representation that this material is app licable to products requiring high level reliab ility, such as, medical products. moreo ver, no license to any intellectual property rights is granted by implication or otherwise, and there is no representation or warranty that any thing made in accordance with this material will be free from any patent or copy right infringement of a third party. this material or portio ns thereof may contain technology or the subject relati ng to strategic products under the control of the foreign exchange and foreign trade la w of japan and may require an export license from the ministry of economy, trade and industry or other approval from another government ag ency. ?seiko epson corporation 2008, all rights reserved. document code: 411653100 first issue december, 2008 in j apan ? epson electronic devices website http://www.epson.jp/device/semicon_e/
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