ZILOG Z89314, Z89318 Datasheet

FEATURES

Z89314/318

CPS95TV0403

CUSTOMER PROCUREMENT SPECIFICATION

Z89314/318

DIGITAL TELEVISION CONTROLLER

■ Part Z8 ROM Z8 RAM* Speed

Number (Kbyte) (Kbyte) (MHz)

Z89314 16 512 12
Z89318 10 512 12
*General-Purpose

■ 40-Pin DIP Package

■ 4.5- to 5.0-Volt Operating Range

■ Z89C00 RISC Processor Core

GENERAL DESCRIPTION

The Z89314/318 are members of Zilog's family of Digital
Television Controllers designed 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 attributes is allowed
on a character-by-character basis. The insertion of control
characters permits direction of other character attributes.

■ 0°C to +70°C Temperature Range

■ Direct Closed Caption Decoding

■ TV Tuner Serial Interface

■ Customized Character Set

■ Character Control Mode

■ Directly Controlled Receiver Functions

Serial interfacing with the television tuner is provided
through the tuner serial port. This version of the Z89300
series does not offer I2C capability

Additional hardware provides the capability to display two
to three 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.

Receiver functions such as color and volume can be
directly controlled by eight 8-bit pulse width modulated
ports.

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:

Display attributes include underlining, italics, blinking,
eight foreground/background colors, character position
offset delay, and background transparency are made
possible through a fully customized 512 character set,
formatted in two 256 character banks.

CPS95TV0403 (8/95)

Connection Circuit Device

Power V

Ground GND V

CC

V

DD
SS

1

GENERAL DESCRIPTION (Continued)

Z89314/318

CPS95TV0403

Port 17

Port 00

Capture
IRIN

ADC

ADC0
ADC1
ADC2

Port 0

Port 00
Port 01
Port 02

Port 03
Port 04
Port 05
Port 06
Port 07

Port 08
Port 09

PWM

PWM1
PWM2
PWM3
PWM4
PWM5
PWM6

Port1

Port 10
Port 11
Port 12
Port 13
Port 14
Port 15
Port 16

RAM

512 x 16

Address

Data

Control
XTAL1

XTAL2
LPF
HSYNC
VSYNC
/Reset

CPU

Register Addr/Data

ROM Addr

ROM Data

Functional Block Diagram

OSD

V1
V2
V3

BLANK

ROM

16K x 16

Z89314

10K x 16

Z89318

2

PIN DESCRIPTION

Z89314/318

CPS95TV0403

N/A PWM9

IRIN

Port 18

Port 00/ADC2

Port 01
Port 02
Port 03
Port 04
Port 05
Port 06
Port 07
Port 08
Port 09
Port 10

Port 11
Port 12
Port 13
Port 14
Port 15
Port 16

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Z89314
Z89318

40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21

PWM6
PWM5
PWM4
PWM3
PWM2
PWM1

CVI/ADC0
LPF
XTAL2

GND
XTAL1
VCC
/Reset
Port 17/ADC1
VBlank
V1
V2
V3
VSync
HSync

40-Pin DIP Configuration

3