SAA8112HL View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

SAA8112HL

Digital camera signal processor and microcontroller

Philips Electronics 

Philips Semiconductors

Digital camera signal processor and

microcontroller

Product specification

SAA8112HL

1 FEATURES

• High precision digital processing with 8- to 10-bit input

• Embedded microcontroller (80C51 core based) for

control loops Auto Optical Black (AOB), Auto White

Balance (AWB) and Auto Exposure (AE)

• Supports a large number of sensors

• RGB Bayer or mosaic (yellow, magenta, green and

cyan) colour processing

• Black and white processing without loss of resolution

• Compatible with interlaced or progressive modes

• Processes up to 800 active pixels per line

• Optical black processing

• Programmable colour matrix

• Programmable R, G and B offsets

• Programmable Knee and Gamma correction

• Programmable edge enhancement

• False colour detection and correction

• Y and UV adjustable coring filters

• Flexible Measurement Engine (ME) with up to 16

measurements per frame in 16 programmable windows

• Programmable measurement conditions on Y, U and V

• 8-bit YUV output with selectable formats:

– YUV 4 : 2 : 2 CCIR656 with signal embedded

synchronization codes (SAV/EAV)

– Selectable YUV output format 4 : 0 : 0, 4 : 1 : 1,

4 : 2 : 2 and 4 : 4 : 4 (according to IEEE-1394 based

digital camera specification)

– Basic output window cutter and scaler.

• Programmable output clock for switched mode power

supply

• 3-wire/13-bit interface for control of the TDA878X family

(CDS + AGS + 10-bit ADC).

3 GENERAL DESCRIPTION

The SAA8112HL is a powerful and versatile 10-bit digital

processor for video cameras. It processes the digitized

sensor data and converts it to a high quality, multi-format

and YUV digital signal. In addition, the SAA8112HL

performs programmable statistical measurements on the

video stream allowing, for instance, a precise

measurement of the exposure or the white balance levels.

An 80C51 microcontroller derivative with five I/O ports,

I2C-bus, 512 bytes of RAM and 32 kbytes of program

memory is also embedded in the SAA8112HL.

The microcontroller is used in combination with the Digital

Signal Processing (DSP) measurement capabilities to

provide advanced AE, AWB and AOB. The microcontroller

may also be used to control other devices in the camera,

for example a USB or a 1394 interface.

In the following description of the SAA8112HL, four main

functional blocks are given (see Fig.1):

• The DSP block

• The DSP ME block

• The microcontroller block

• The timing, interface and miscellaneous functions block.

2 APPLICATIONS

• PC camera

• Videophone

• Security camera

• Camcorder.

2000 Jan 18

3

Share Link: