Z86250

Z86250 CP96TEL0302 CUSTOMERPROCUREMENTSPECIFICATION Z86250 STARSIGHTDATABASEENGINE FEATURES s Part Z86250 Package 84-Pin PLCC Speed (MHz) 24 s s Infrared Receiver Logic CRC-32 Encoding and Decoding Logic Watch-Dog Timer (WDT) for Error Recovery Serial I.M. and I2C Compatible Bus for External Communication Test Multiplexer for Chip Debug s s s s 4.3- to 5.5-Volt Operating Range s 0 °C to +70° C Temperature Range Low-Power Consumption Segmented Base Registers s s GENERAL DESCRIPTION Zilog's Z86250 StarSight Data Base Engine (DBE) is designed to process extracted data for the StarSight on-screen programming guide. The device is logically equivalent to the DBE1200 for StarSight applications. The Z86250 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. For fast memory data manipulation, the Z86250 offers segmented base registers. The device also features PSRAM memory control and refresh logic. The DBE is optimized to work with Zilog's Z89300 series of TV controller devices to provide a cost-effective solution for StarSight programming-guide data extraction and display. Notes: All Signals with a preceding front slash, "/", are active Low, e.g.: B//W (WORD is active Low); /B/W (BYTE is active Low, only). Power connections follow conventional descriptions below: Connection Power Ground Circuit VCC GND Device VDD VSS CP96TEL0302 (2/96) 1 Z86250 CP96TEL0302 GENERAL...