Z86130 ZILOG [Zilog, Inc.], Z86130 Datasheet - Page 18

• Manufacturer Part Number: Z86130
• Description: NTSC LINE 21 DECIDER
• Manufacturer: ZILOG [Zilog, Inc.]

Z86129/130/131
NTSC Line 21 Decoder
Z86129/130/131 FEATURE SET (Continued)
When SEN is brought High the part will be synchronized
and waiting for a Command. If SEN is tied High, the part
can also be synchronized by a command string. During
SPI mode operation the VIN/INTRO signal (pin 13), can be
configured to generate interrupt requests to the master
device on selected events. (See Note paragraph below.)
CAUTION: When the SEN and SMS pins are made Low
simultaneously, the part will be reset.
Interrupt Generation. The VIN/INTRO signal (pin 13) can
be configured to provide an interrupt output on selected
events. The configuration of VIN/INTRO (pin 13) is user
programmable to be either of two states:
1. An INPUT pin for acceptance of an external VSYNC
2. An OUTPUT pin for interrupt generation on a selected
Note: Configuring VIN/INTRO as an output for interrupt
generation is particularly useful when implementing the
V-Chip feature in TVs and VCRs. In this configuration, Pin
13 is used to interrupt the host processor when the XDS
Program Rating data packet is found. As a result the host
processor is not burdened with monitoring or filtering the
line 21 data stream. The Z86129/130/131 filters the Line
21 data stream for the host processor, and generates an
interrupt only when the desired packet is found.
Setup and Operational Control
The Z86129/130/131 is extremely flexible and fully
programmable through its serial communication port. The
following
Programmable Features, User Selectable Display Modes,
and Default Conditions upon Reset.
Z86129/130/131 Programmable Features
18
timing signal
events
–
–
–
–
–
–
–
–
–
–
–
–
Decoder ON/OFF
TV scan lines per OSD row (13 or 15)
EIA-608 extended attributes ON/OFF
OSD drop shadow ON/OFF
Color/Monochrome
OSD Horizontal start position
Text box size (# of rows)
Text box starting row position
NTSC or PAL
Vertical Lock Source: Video or External VIN
XDS Data Output, Raw or Filtered
H Lock Source: Video or External HIN
tables
provide
a
partial list of User-
P R E L I M I N A R Y
In addition to the programmable features just listed, the
Z86129 offers a choice of eleven display modes for user
selection.
The Z86129/130/131 is initialized on RESET to the
following default conditions:
Parameter
Display Channel
Decoder
TEXT Size
Lines/Row
Background
EIA-608 Extended Attributes
Data Outputs
Video Standard
Data Outputs
VCO Lock
BOX Timing
Vertical Lock
VIN/INTRO
Horizontal Lock
Color/Mono
OSD Display
Display
XDSG
XDSF
Mode
OSD
CC1
CC2
CC3
CC4
T1
T2
T3
T4
Table 4. RESET Default Conditions
Table 3. Z86129 Display Modes
User Defined via
Display Data
L21 Closed
L21 Closed
L21 Closed
L21 Closed
Serial Port
L21 TEXT
L21 TEXT
L21 TEXT
L21 TEXT
Captions
Captions
Captions
Captions
XDS
XDS
2 (even)
1 (odd)
NTSC
Field
Reset Condition
CC1
OFF
15 rows
13
BOX
ON
OFF
NTSC
OFF
Video
13.5usec
Video
INTRO & Disabled
Video
Color
Drop Shadow 15
lines/row
1
2
1
1
2
2
2
2
DS96TEL0200
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