XRD9814B Datasheet, PDF (39/53 Pages) Exar Corporation – 3-Channel 14/16-Bit Linear CCD/CIS Sensor Signal Processors

XRD9814B/9816B
INSEL/OUTSEL Data Output Format
There are two control signals for setting the output data
format and the serial load control. INSEL is used to
select the mode for programming the serial port. To
use the external pins sdi, sclk and load, INSEL must
be low (Figure 17). When INSEL is set to high, DB13/
sdi and DB12/sclk become inputs through the bi-
directional output bus to load the internal control
registers (Figure 18). The load pin is still used to latch
the data. This helps to reduce the pin count require-
ments for the ASIC that drives the XRD9814B/9816B.
OUTSEL is used to select the output data format of the
XRD9814B/9816B. The XRD9814B/9816B supports
14/16-bit parallel and 8-bit nibble output modes. When
OUTSEL is low, the output bus is standard 14/16-bit
parallel (Figure 20). To use the 8-bit nibble output
mode, OUTSEL must be set high (Figure 21). In either
14/16-bit or 8-bit nibble applications, the output bus is
tri-stated when the bi-directional serial load signal is
pulled low.
DB13/DB15
DB12/DB14
XRD9814B/
XRD9816B
DB0
sdi
sclk
load
Insel
Outsel
14/16-Bit Parallel
Digital
ASIC
External Serial Load
Insel=0, Outsel=0
Figure 27. 14/16-Bit Output (OUTSEL=0), External Serial Load (INSEL=0)
DB13/DB15/sdi
DB12/DB14/sclk
XRD9814B /
XRD9816B
DB0
sdi
sclk
load
Insel
Outsel
14/16-Bit Parallel
Bi-Directional Serial
Load
Digital
ASIC
No Connect
No Connect
Insel=1, Outsel=0
Figure 28. 14/16-Bit Output (OUTSEL=0), Bi-Directional Serial Load (INSEL=1)
Rev. 1.00
39