Z89303 Zilog., Z89303 Datasheet

Z89303

Manufacturer Part Number

Z89303

Description

DIGITAL TELEVISION CONTROLLER

Manufacturer

Zilog.

Datasheet

1.Z89303.pdf (8 pages)

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DC-4222-03

GENERAL DESCRIPTION

The Z89303/05/07 Digital Television Controllers are

application-specific controllers designed to provide

complete audio and video control of television receivers,

video recorders, with advanced on-screen display facilities.

The Z89303/05/07 are 24K, 16K and 12K ROM versions in

52-pin SDIP packages. The powerful 12 MHz Z89C00

RISC processor core allows the user to control the on-

board peripheral functions and registers using the standard

processor instruction set.

The extensive character attributes can be controlled in two

modes: by the on-screen display controller character

control mode for maximum display control flexibility, and

closed caption mode for optimum display of closed caption

text.

Closed caption text can be decoded directly from the

composite video signal with the assistance of the

processor's digital signal processing capabilities and

displayed on the screen. The character representation in

this mode allows for a simple attribute control through the

insertion of control characters, and each word of RAM

specifies two displayed characters.

The character control mode provides access to the full set

of attribute controls. Each word of RAM specifies a single

displayed character and basic character attributes, allowing

the modification of attributes on a character-by-character

basis. The insertion of control characters permits direction

of other character attributes.

The fully customized 512 character set, formatted in two

256 character banks, can be displayed with a host of

display attributes that incude underlining, italics, blinking,

eight foreground/background colors, character position

offset delay, and background transparency. The 16-bit

display character representation allows the modification of

some key attributes on a character-by-character basis. A

character's pixel array is stored as a 16- or 18-word

representation in Character Graphics ROM (CGROM).

The ROM contents are referenced by a 16-bit word stored

in video RAM (VRAM) defining the character type and its

key attributes.

(10-10-94)

P R E L I M I N A R Y

Z89303/05/07

DIGITAL TELEVISION CONTROLLER

Serial interfacing with the television tuner is provided

through the tuner serial port. Other serial devices, such as

digital channel tunning adjustments, may be accessed

through the industry standard I

Additional hardware provides the capability to display two

times normal size characters. The smoothing logic

contained in the on-screen display circuit improves the

appearance of larger fonts. Fringing circuitry can be

activated to improve the visibiity of text by surrounding the

character lines with a one-pixel border.

RGB outputs provide the direct video signals, and a

blanking output is provided to control the video multiplexor.

Dot clock and verticle line synchronization are normally

obtained from H_FLYBACK and V_FLYBACK, but can be

generated by the Z89303/05/047, and driven to the external

deflection unit through the bidirectional SYNC ports when

external video synchronization signals are not present.

User control can be monitored through the keypad scanning

port, or the 16-bit remote control capture register. Receiver

functions such as color and volume can be directly

controlled by eight 8-bit pulse width modulated ports.

All nine PWM ports are available in the 52-pin package.

The Z89303/05/07 has two internal 12 MHz VCOs that are

referenced to a 32 KHz internal oscillator to provide the

system clock. In Sleep mode, the controller uses the 32

KHz clock for the system clock to reduce power

consumption. The processor can be suspended by placing

it into STOP mode when main power is not available for

minimal power consumption.

RELIMINARY

USTOMER

ROCUREMENT

PECIFICATION

C port.

CPS DC-4222-03

Related parts for Z89303

Z89303 Summary of contents

Page 1

... All nine PWM ports are available in the 52-pin package. The Z89303/05/07 has two internal 12 MHz VCOs that are referenced KHz internal oscillator to provide the system clock. In Sleep mode, the controller uses the 32 KHz clock for the system clock to reduce power consumption ...

Page 2

... Port 14 Port 15 Port 16 Port 17 Port 18 Port 19 Note: Shaded pin functions not available on 40-pin device. OSD BLANK HALFBLNK Port0F ROM Note: Z89307 12K x 16 has 12K words of ROM. 16K x 16 Z89305 has 16K words. 24K x 16 Z89302/03 has 24K words. Z89303/05/07 ...

Page 3

... Port14/B<0> Port15/B<1> Port16/SCLK Port0A 25 Port0B 26 27 52-Pin Shrink DIP Configuration CPS DC-4222-03 PWM8 PWM7 PWM6 PWM5 PWM4 PWM3 PWM2 PWM1 ADC5 CVI/ADC0 LPF XTAL2 AN GND XTAL1 AN VCC /Reset Port0F/HalfBlnk Port17/ADC1 Blank VSync HSync Port0D Port0C Z89303/05/07 3 ...

Page 4

... Z89303/05/07 52-Pin 17,38 10,40 2 44,11,12,6,35,43 –,1 52,51,50,49, 48,47,46,45 36,5,28,27,26,25, 16,15,14,13,12, 11,9,8,7,6 4,3,35,24,23,22, 21,20,19, 31,32, 23,22,21, 18,15 Z89303/05/07 CPS DC-4222-03 Configuration Direction Reset PWR PWR I I nAI BOD BOD ...

Page 5

... Bit = 10 Bit = 01 Bit = 00 70 Level, 10pf Load Condition Bit = 11 Bit = 10 Bit = 01 Bit = 00 70 Level, 10pf Load 32K Oscillator Recommended Circuit Z89303/05/07 CPS DC-4222-03 Limit 4.55 V +/– 0.25 V 3.205V +/– 0.2 V 1.95 V +/– 0.15 V 0.65 V +/– 0.1 V < 50 nsec Limit 3.90 V +/– 0.25 V 2.90 V +/– 0.2 V 1.90 V +/– 0.15 V 0.1 V +/– ...

Page 6

... V 1 –2.0 3.5 CC 3.0 0.75 0.5 150 90 –3.0 3.0 0.01 100 6 0 700 300 300 100 Z89303/05/07 CPS DC-4222-03 Conditions V V Digital Inputs V Analog Inputs (A/D0...A/D4) V All Push-Pull Digital Output V Open-Drain PWM Outputs (PWM1...PWM8) One Pin All Pins One Pin All Pins C C Units Conditions PWM0 ...

Page 7

... C bus interface are defined by related specifications of the bus interface 32.768 KHz OSC Min Max Typical 16 100 32 12 0.8 1.2 = 32.768 KHz OSC Min Max 5TPC 5.5 12.5 0.15 1.5 – 2.0 Z89303/05/07 CPS DC-4222-03 Units Typical Units 1 0 ...

Page 8

... Zilog, Inc. 210 East Hacienda Ave. Campbell, CA 95008-6600 Telephone (408) 370-8000 Telex 910-338-7621 FAX 408 370-8056 Z89303/05/07 CPS DC-4222-03 ...

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