GENERAL DESCRIPTION

The SAA8115HL is the second generation of integrated circuit applicable in PC video cameras to convert D1 video signals and analog audio signals to properly formatted USB packets.

FEATURES

• VGA (progressive mode), CIF and medium resolution (PAL non-interlaced mode) CCD sensors compliant

• D1 digital video input (8 bits YUV 4 : 2 : 2 time multiplexed)

• Internal Pulse Pattern Generator (PPG) dedicated for VGA Panasonic, CIF and medium resolution Sharp sensors or compatibles, and frame rate selection

• Frame rate converter

• SDRAM interface for high quality VGA snapshot (uncompressed 4 : 2 : 2 or 4 : 2 : 0)

• Downsampler and scaler (programmable formatter for CIF, QCIF, sub-QCIF, SIF and QSIF) controlled via SNERT (UART) interface

• Flexible compression engine controlled via SNERT (UART) interface

• Selectable output frame rate (up to 15 fps in VGA, up to 30 fps in CIF and QCIF)

• Video packetizer FIFO

• I2C-bus interface for communication between the USB protocol hardware and the external microcontroller

• Microphone/audio input to USB (microphone supply, controllable gain and ADC)

• Integrated analog bus driver (ATX)

• Integrated main oscillator

• Integrated 5 V power supply and reset circuit including functionalities for bus-powered USB device

• Programmable (frequency and duty cycle) switch mode power signal for CCD supply

• Miscellaneous functions (e.g. power management, PLL for audio frequencies).

APPLICATIONS

Low-cost desktop video applications with USB interface.