ADV7174

The ADV7174 / ADV7179 is an integrated digital video encoder that converts digital CCIR-601 4:2:2 8-bit component video data into a standard analog baseband television signal compatible with worldwide standards.

The on-board SSAF (super sub-alias filter) with extended luminance frequency response and sharp stop-band attenuation enables studio quality video playback on modern TVs, giving optimal horizontal line resolution.

An advanced power management circuit enables optimal control of power consumption in both normal operating modes and in power-down or sleep modes.

The ADV7174 / ADV7179 supports both PAL and NTSC square pixel operation. The parts incorporate WSS and CGMS-A data control generation.

The output video frames are synchronized with the incoming data timing reference codes. Optionally, the encoder accepts (and can generate) HSYNC, VSYNC, and FIELD timing signals. These timing signals can be adjusted to change pulse width and position while the part is in the master mode. The encoder requires a signal two times the pixel rate (27 MHz) clock for standard operation. Alternatively, the encoder requires a 24.5454 MHz clock for NTSC or 29.5 MHz clock for PAL square pixel mode operation. All internal timing is generated on-chip.

A separate Teletext port enables the user to directly input Teletext data during the vertical blanking interval. The ADV7174 / ADV7179 modes are set up over a 2-wire serial bidirectional port (I2 C compatible) with two slave addresses.

The ADV7174 / ADV7179 is packaged in a 40-lead 6 mm × 6 mm LFCSP package.

APPLICATIONS

• Portable video applications
• Mobile phones
• Digital still cameras