GENERAL DESCRIPTION

Zilogs Z86251 StarSight Data Base Engine (DBE) is designed to process extracted data for the StarSight on-screen programming guide.

The Z86251 provides a number of important peripheral functions, such as the IR Blaster to send command signals to the VCR, and low-power management to avoid loss of data.

FEATURES

■ Part Package Speed (MHz)

Z86251 68-Pin PLCC 24

■ 4.5- to 5.5-Volt Operating Range

■ 0°C to +70°C Temperature Range

■ Low-Power Consumption

■ Segmented Base Registers

■ DRAM Memory Control and Refresh Logic

■ Power-Down DRAM Data Retention

■ Infrared Transmitter Circuits for TV and VCR Control

■ CRC-32 Encoding and Decoding Logic

■ Watch-Dog Timer (WDT) for Error Recovery

■ I2C Compatible Bus for External Communication

■ Test Multiplexer for Chip Debug

■ On-Chip Crystal Oscillator