SAA8116 Datasheet, PDF (12/60 Pages) NXP Semiconductors – Digital PC-camera signal processor including microcontroller and USB interface

Philips Semiconductors
Digital PC-camera signal processor including
microcontroller and USB interface
Product specification
SAA8116
FUNCTIONAL DESCRIPTION
The SAA8116 video processor has a very high level of
programmability: 118 (8-bit) registers are dedicated for the
Video Signal Processor (VSP), including Pulse Pattern
Generator (PPG) and Measurement Engine (ME), plus
23 registers for the Video Formatter and
Compressor (VFC). The SAA8116 can accept 8 to 10-bit
digital data from various VGA sensors: CCD (progressive)
or CMOS, with or without colour filters (see Table 1).
The HV timing module can serve both as master or slave.
When serving as a slave, the V pulse only is needed since
the H pulse is internally derived from V by programming
the number of pixels per line.
VIDEO WINDOWS
Several registers allow the definition of the optical black
window, the active video input window, the active video
output window and the measurement windows.
Synchronization and video windows
CCD SENSOR PULSE PATTERN GENERATOR
The SAA8116 incorporates a PPG function, which can be
used for VGA CCD sensors, see Table 1.
Depending on the sensor type, an external inverter driver
is required to convert the 3.3 V pulses to a voltage suitable
for the CCD sensor used.
The active video size is 640 × 480 for VGA. The total H × V
size is 823 × 486 for VGA.
A total of 19 internal registers make a high level of
flexibility available for the PPG.
FLEXIBLE HV TIMING
The PPG module is not used with CMOS sensors. The
SAA8116 provides some flexibility on the frame size to
increase the range of applicable sensors (see Table 1). It
is possible to program the position, width and polarity of
the H and V signals. The output clock for the CMOS
sensor is selectable between single and double pixel
clock, including a programmable polarity.
Table 1 Typical SAA8116 compatible sensors
SENSOR
TYPE
BRAND
PART NUMBER
VGA CCD
Sony
ICX098AK
Panasonic MN37771PT
Sharp
LZ24BP
VGA CMOS Philips UPA1021
Hyundai HV7131B
Photobit PB-0320
Other sensors all sensors that fulfil the following
criteria:
• B and W; RGB Bayer colour filter
• 8-bit, 9-bit or 10-bit output
• CMOS or CCD sensors
• progressive
2001 May 04
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