Preliminary, The analog plus compa – Canon XRD9827REF User Manual
Page 3
... the analog plus compa
TM
EXAR Corporation 48720 Kato Road, Fremont, CA 94538 Phone (510)-668-7000, Fax (510)-668-7030
PRELIMINARY
3
CANON CVA-60216K 600D
PI COLOR CIS
XRD9827
FIFO
SRAM
FIFO
SRAM
INTEL 486 Compatible
MACH435 CPLD
PARALLEL
PORT DB25
CONNECTOR
CIS CONTROL SIGNALS
8-BIT DATA
DATA
8-BIT DATA
6-BIT BUS NIBBLE
XRD9827 CONTROL SIGNALS
PARALLEL PORT CONTROL
CIS OUTPUT
CIS REFERENCE
VOLTAGE
Figure 1. Block Diagram of XRD9827REF
The XRD9827 is a complete linear CIS or CCD sensor signal processor on a single monolithic chip. The
XRD9827 includes a high speed 12-Bit ADC, a 6-Bit Programmable Gain Amplifier with gain adjustment
of 1 to 10 and an 8-Bit programmable input referred offset calibration range of 800 mV. The XRD9827
also provides the necessary biasing voltage for the CANON CIS, eliminating the use of external
components (two diodes and two resistors). See the XRD9827EVAL User Manual / PCB board for
evaluating the XRD9827 CIS / CCD signal processor chip. A simplified functional block diagram of
XRD9827 is shown below for your reference.