Z90348

Zilog P R E L I M I N A R Y Z90349/Z90348 PRELIMINARY CUSTOMER PROCUREMENT SPECIFICATION Z90349/348 DIGITAL TELEVISION CONTROLLER IN-CIRCUIT EMULATOR (ICE) DEVICE FEATURES s Part Number Z90349 Z90348 ROM (Word) 0 0 RAM (Word) 1K 1K Speed (MHz) 12 12 s s s Direct Closed Caption Decoding TV Tuner Serial Interface Customized Character Set Character Control Mode Directly Controlled Receiver Functions V-Chip Decode s 144-Pin Grid Array (PGA) Package (Z90349) 100-Pin Quad Flat Pack (QFP) Package (Z90348) 4.5- to 5.5-Volt Operating Range Z89C00 RISC Processor Core 0°C to +70°C Temperature Range s s s s s s GENERAL DESCRIPTION The Z90349 and Z90348 are ROMless versions of the Z89300 family of Zilog's Digital Television Controllers designed for use in emulators and development boards to provide complete audio and video control of television receivers, video recorders, and advanced on-screen display facilities. The powerful Z89C00 RISC processor core allows users to control on-board peripheral functions and registers using the standard processor instruction set. In closed caption mode, text can be decoded directly from the composite video signal and displayed on the screen with assistance from the processor's digital signal processing capabilities. The character representation in this mode allows for a simple attribute control through the insertion of control characters. The character control mode provides access to the full set of attribute controls. The modification of ...