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 onboard 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.
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 I2C port.
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.
DC-4222-03(10-10-94)
1
PRELIMINARY
GENERAL DESCRIPTION (Continued)
Z89303/05/07
CPS DC-4222-03
Port 17
Port 00
Capture
IRIN
ADC
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
Port 0
Port 00
Port 01
Port 02
Port 03
Port 04
Port 05
Port 06
Port 07
Port 08
Port 09
Port 0A
Port 0B
Port 0C
Port 0D
Port 0E
Port 0F
PWM
PWM1
PWM2
PWM3
PWM4
PWM5
PWM6
PWM7
PWM8
PWM9
Port1
Port 10
Port 11
Port 12
Port 13
Port 14
Port 15
Port 16
Port 17
Port 18
Port 19
Note: Shaded pin functions
not available on 40-pin device.
RAM
640 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
HALFBLNK
ROM
12K x 16
16K x 16
24K x 16
Port0F
Note: Z89307
has 12K words of ROM.
Z89305 has 16K words.
Z89302/03 has 24K words.
/RESETDevice Reset37II
V[3:1]OSD Video Output31,32,33OO
(Typically Drive B, G, and R Outputs)
BlankOSD Blank Output34OO
Half BlankhOSD Half Blank Output36O
RGB DigitalR[1:0],G[1:0], and B[1:0]23,22,21,O
Outputs
SCLK
i
Outputs of the RGB Matrix18,15,3
k
Internal Processor SCLK24O
4
V1, V2, V3 ANALOG OUTPUT
Specifications VCC = 5.25 V
VCC = 5.25 VConditionLimit
Output VoltageBit = 114.55 V +/– 0.25 V
Settling Time70% of DC Level, 10pf Load < 50 nsec
V1, V2, V3 ANALOG OUTPUT
Specifications VCC = 4.75V
VCC = 4.75VConditionLimit
PRELIMINARY
Bit = 103.205V +/– 0.2 V
Bit = 011.95 V +/– 0.15 V
Bit = 000.65 V +/– 0.1 V
Z89303/05/07
CPS DC-4222-03
Output VoltageBit = 113.90 V +/– 0.25 V
Bit = 102.90 V +/– 0.2 V
Bit = 011.90 V +/– 0.15 V
Bit = 000.1 V +/– 0.1 V
Settling Time70% of DC Level, 10pf Load < 50 nsec
Z893XX
32K Oscillator Recommended Circuit
Notes:
c) PWM[8,7] is not available on the 40-pin DIP version.
d) Port0[F:A] is not available on the 40-pin DIP version.
e) Port19 is not available on the 40-pin DIP version.
f) SCL I/O pin is shared with Port0 or Port11.
g) SCD I/O pin is shared with Port02 or Port12.
h) Half Blank output is a function shared with Port0F.
Half Blank output is not available on the 40-pin DIP version.
i) Digital RGB outputs and the internal SCLK are shared with Port1[5:0].
k) Internal processor SCLK is shared with Port16.
TPCInput Clock Period 16100 32µS
TRC,TFCClock Input Rise and Fall 12µS
TDPORPower On Reset Delay 0.8 1.2s
= 32.768 KHz
OSC
AC CHARACTERISTICS
TA = 0°C to + 70°C; VCC = 4.5 V to 5.5 V; F
SymbolParameterMinMax TypicalUnits
TWRESPower-On Reset Min. Width5TPCµS
TDH
TDV
TDE
S
S
S
H_Sync Incoming Signal Width5.512.511µS
V_Sync Incoming Signal Width0.151.51.0mS
Time Delay Between Leading Edge–12+120µS
of V_Sync and H_Sync in Even Field
= 32.768 KHz
OSC
Z89303/05/07
CPS DC-4222-03
TDO
S
Time Delay Between Leading Edge204432µS
of H_Sync in Odd Field
TWHV
S
Notes:
All timing of the I2C bus interface are defined by related specifications
of the I2C bus interface.
H_Sync/V_Sync Edge Width2.00.5µS
7
PRELIMINARY
Z89303/05/07
CPS DC-4222-03
Development Projects:
Customer is cautioned that while reasonable efforts will be
employed to meet performance objectives and milestone
dates, development is subject to unanticipated problems
Pre-Characterization Product:
The product represented by this CPS is newly introduced
and Zilog has not completed the full characterization of the
product. The CPS states what Zilog knows about this
product at this time, but additional features or non-con-
and delays. No production release is authorized or committed until the Customer and Zilog have agreed upon a
Customer Procurement Specification for this project.
formance with some aspects of the CPS may be found,
either by Zilog or its customers in the course of further
application and characterization work. In addition, Zilog
cautions that delivery may be uncertain at times, due to
start-up yield issues.
Zilog’s products are not authorized for use as critical components 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
8
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