Z86130 ZILOG [Zilog, Inc.], Z86130 Datasheet - Page 29

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

D
and XDS display modes: High = DROP SHADOW and
Low = BOX. The default is High.
D
in the OSD and XDS display modes: High = 15 lines/row
and Low = 13 lines/row. The default is High.
H Position Register Address = 02h
D
display. The default value in this register is 26h. Each
count change represents an incremental timing change of
330 ns. Decreasing the value of this field moves the
display to the RIGHT. Conversely, increasing the value of
this field moves the display to the LEFT.
D
signal when in the EXT HLK mode: Low = Rising Edge,
High = Falling Edge. The default is Low.
D
Low = Black Box. The default is Low.
Text Position Register Address = 03h
D
display. The default is 15 rows.
D
The default value in this register is set to FFh, which
produces a 15-row display with base row 15. Entering a
new value in this register can alter the size and placement
of the TEXT display. For example, to produce an 8 row
TEXT display with a base row of 12, this register should be
set to C8h. If the value of the x and y bits result in a display
where TEXT rows are off the top of the screen, then the
first row of the TEXT display will start in row 1 and have the
number of rows determined by the x value.
DS96TEL0200
Bit
Bit
6
7
0
6
7
0
4
Figure 22. Text Position Register (Address = 03h)
-ODRP. Selects Drop Shadow or Full Box in the OSD
-O15. Selects the number of TV lines per character row
-D
-HPO. Set the polarity to be used for locking to the HIN
-BLUBX. Designates color of BOX: High = Blue Box and
-D
-D
Figure 21. H Position Register (Address = 02h)
BLUBX HPO
5
R/W
3
7
R/W
D
-h
-x
-y
D
y
7
3
7
0
0
0
-x
-y
-h
3
3
5
R/W
. Sets the Number Of Rows in the TEXT
. Sets the Base Row of the TEXT display.
R/W
. Used to set the Horizontal Timing of the
D
y
D
6
2
6
R/W
R/W
D
y
D
h
5
1
5
5
R/W
R/W
D
y
D
h
0
4
4
4
R/W
R/W
D
D
x
h
3
3
3
3
R/W
R/W
D
x
D
h
2
2
2
2
R/W
R/W
D
D
x
h
1
1
1
1
P R E L I M I N A R Y
R/W
R/W
D
D
x
h
0
0
0
0
Line 21 Activity Register Address = 04h
D
Channel selected for display. Will become inactive if no
data is received for the selected channel within the
previous 16 seconds: High = Active, Low = Inactive. The
reset state is Low.
D
become inactive if no XDS data is received within the
previous 16 seconds: High = Active, Low = Inactive. The
reset state is Low.
D
XDS Filter Register Address = 05h
D
through the Serial Control port when XDS recovery has
been enabled.
D
the Serial Control port when XDS recovery has been
enabled.
D
output through the Serial Control port when XDS recovery
has been enabled.
D
through the Serial Control port when XDS recovery has
been enabled.
D
through the Serial Control port when XDS recovery has
been enabled.
Figure 23. Line 21 Activity Register (Address = 04h)
Bit
Bit
0
1
2
0
1
2
3
4
-SCH. Indicates data being processed in the Data
-XDS. Indicates XDS data is being processed. Will
-D
-CURR. Selects Current Class packets for output
-FUTR. Selects Future Class packets for output through
-CHAN. Selects Channel Information Class packets for
-MISC. Selects Miscellaneous Class packets for output
-PUBL. Selects Public Service Class packets for output
Figure 24. XDS Filter Register (Address = 05h)
R/W
7
D
res
. Reserved.
D
s
2
7
7
R/W
D
res
D
s
6
6
1
R/W
D
res
D
s
0
5
5
PUBL
R/W
D
D
res
4
4
MISC CHAN FUTR CURR
R/W
D
res
D
3
NTSC Line 21 Decoder
3
R/W
D
D
res
2
2
Z86129/130/131
XDS
R/W
D
D
R
1
1
SCH
R/W
D
R
D
0
0
29
1