xrd9816acv Exar Corporation, xrd9816acv Datasheet - Page 39

• Manufacturer Part Number: xrd9816acv
• Description: 3-channel 14/16-bit Linear Ccd/cis Sensor Signal Processors
• Manufacturer: Exar Corporation

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 XRD9814/9816.
OUTSEL is used to select the output data format of the
Rev. 1.00
Figure 28. 14/16-Bit Output (OUTSEL=0), Bi-Directional Serial Load (INSEL=1)
Figure 27. 14/16-Bit Output (OUTSEL=0), External Serial Load (INSEL=0)
XRD9816
XRD9814/
XRD9814 /
XRD9816
DB12/DB14/sclk
DB13/DB15/sdi
DB13/DB15
DB12/DB14
Outsel
Outsel
Insel
DB0
load
Insel
sclk
DB0
load
sclk
sdi
39
sdi
XRD9814/9816. The XRD9814/9816 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.
External Serial Load
Bi-Directional Serial
Insel=1, Outsel=0
Insel=0, Outsel=0
14/16-Bit Parallel
14/16-Bit Parallel
No Connect
No Connect
Load
XRD9814/9816
Digital
ASIC
Digital
ASIC