1
Z90349/Z90348
P R E L I M I N A R Y
CP97TEL2600
Zilog
FEATURES
s
Part
ROM
RAM
Speed
Number
(Word)
(Word)
(MHz)
Z90349
0
1K
12
Z90348
0
1K
12
s
144-Pin Grid Array (PGA) Package (Z90349)
100-Pin Quad Flat Pack (QFP) Package (Z90348)
s
4.5- to 5.5-Volt Operating Range
s
Z89C00 RISC Processor Core
s
0
C to +70
C Temperature Range
GENERAL DESCRIPTION
P
RELIMINARY
C
USTOMER
P
ROCUREMENT
S
PECIFICATION
Z90349/348
DIGITAL TELEVISION CONTROLLER
IN-CIRCUIT EMULATOR (ICE) DEVICE
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 attributes is allowed
on a character-by-character basis. The insertion of control
characters permits direction of other character attributes.
Display attributes, including underlining, italics, blinking,
eight foreground/background colors, character position
offset delay, and background transparency, are made
possible through a fully customized 512 character set.
Serial interfacing with the television tuner is provided
through the tuner serial port. Digital channel tuning
adjustments may be accessed through the industry-
standard I
2
C port.
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. Special circuitry can be
activated to improve the visibility of text by adding a right-
sided shadow effect to the characters.
Receiver functions such as color and volume can be
directly controlled by six 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:
Connection
Circuit
Device
Power
V
CC
V
DD
Ground
GND
V
SS
s
Direct Closed Caption Decoding
s
TV Tuner Serial Interface
s
Customized Character Set
s
Character Control Mode
s
Directly Controlled Receiver Functions
s
V-Chip Decode
8
Z90349/Z90348
P R E L I M I N A R Y
CP97TEL2600
Zilog
Zilog's products are not authorized for use as critical compo-
nents in life support devices or systems unless a specific written
agreement pertaining to such intended use is executed between
the customer and Zilog prior to use. Life support devices or
systems are those which are intended for surgical implantation
into the body, or which sustains life whose failure to perform,
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to result in
significant injury to the user.
Zilog, Inc. 210 East Hacienda Ave.
Campbell, CA 95008-6600
Telephone (408) 370-8000
Telex 910-338-7621
FAX 408 370-8056
Internet: http://www.zilog.com
1997 by Zilog, Inc. All rights reserved. No part of this document
may be copied or reproduced in any form or by any means
without the prior written consent of Zilog, Inc. The information in
this document is subject to change without notice. Devices sold
by Zilog, Inc. are covered by warranty and patent indemnification
provisions appearing in Zilog, Inc. Terms and Conditions of Sale
only. Zilog, Inc. makes no warranty, express, statutory, implied or
by description, regarding the information set forth herein or
regarding the freedom of the described devices from intellectual
property infringement. Zilog, Inc. makes no warranty of mer-
chantability or fitness for any purpose. Zilog, Inc. shall not be
responsible for any errors that may appear in this document.
Zilog, Inc. makes no commitment to update or keep current the
information contained in this document.
AC CHARACTERISTICS
T
A
= 0
C to + 70
C; V
CC
= 4.5 V to 5.5 V; F
OSC
= 32.768 KHz
Symbol
Parameter
Min
Max
Typical
Units
Note
T
P
C
Input Clock Period
16
100
32
s
T
R
C,T
F
C
Clock Input Rise and Fall
12
s
T
D
POR
Power On Reset Delay
0.8
1.2
s
Depends on Crystal
AC CHARACTERISTICS*
T
A
= 0
C to + 70
C; V
CC
= 4.5 V to 5.5 V; F
OSC
= 32.768 KHz
Symbol
Parameter
Min
Max
Typical
Units
T
W
RES
Power-On Reset Min. Width
5TPC
s
T
D
H
S
H_Sync Incoming Signal Width
5.5
12.5
11
s
T
D
V
S
V_Sync Incoming Signal Width
0.15
1.5
1.0
ms
T
D
E
S
Time Delay Between Leading Edge
12
+12
0
s
of V_Sync and H_Sync in Even Field
T
D
O
S
Time Delay Between Leading Edge
20
44
32
s
of H_Sync in Odd Field
T
W
HV
S
H_Sync/V_Sync Edge Width
2.0
0.5
s
Notes:
All timing of the I
2
C bus interface are defined by related specifications of
the I
2
C bus interface.
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