Z86250 Просмотр технического описания (PDF) - Zilog

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Компоненты Описание

производитель

Z86250

STARSIGHT DATABASE ENGINE

Zilog 

Z86250

CP96TEL0302

CUSTOMERPROCUREMENTSPECIFICATION

FEATURES

s Part

Z86250

Package

84-Pin PLCC

Speed (MHz)

24

s 4.3- to 5.5-Volt Operating Range

s 0°C to +70°C Temperature Range

s Low-Power Consumption

s Segmented Base Registers

Z86250

STARSIGHT DATABASE ENGINE

s Infrared Receiver Logic

s CRC-32 Encoding and Decoding Logic

s Watch-Dog Timer (WDT) for Error Recovery

s Serial I.M. and I2C Compatible Bus for External

Communication

s Test Multiplexer for Chip Debug

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

V

SS

CP96TEL0302 (2/96)

1

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