
Koninklijke Philips Electronics N.V. Copyright 2001. All rights reserved.
9397 750 08865
40 of 84
Rev. 02 — 8 October 2001
Product data
PNX8510/11
Philips Semiconductors
Analog Companion Chip
Offset 0x6F
TTXCTL
7:6
R/W
0x00
CCEN
Closed caption enable
00 = Line 21 encoding off
01 = Enables encoding in field 1 (odd).
10 = Enables encoding in field 2 (even).
11 = Enables encoding in both fields.
5
R/W
0
TTXEN
0 = Disables teletext insertion.
1 = Enables teletext insertion.
4:0
R/W
0x11
SCCLN
Selects the actual line where closed caption or extended data are
encoded.
line = (SCCLN + 4) for M-systems
line = (SCCLN +1) for other systems
Offset 0x70
ADWHS
7:0
R/W
0x5a
ADWHS7:0
Active Display Window Start bits 7 to 0
Defines the start of the active TV display portion after the border
color. Values above 1715 (FISE=1) or 1727 (FISE=0) are not
allowed.
Offset 0x71
ADWHE
7:0
R/W
0x5a
ADWHE7:0
Active Display Window End bits 7 to 0
Defines the start of the active TV display portion after the border
color. Values above 1715 (FISE=1) or 1727 (FISE=0) are not
allowed.
Offset 0x72
ADWHS/E
7-
Unused
6:4
R/W
0x6
ADWHE10:8
Active Display Window End bits 10 to 8.
Defines the start of the active TV display portion after the border
color. Values above 1715 (FISE=1) or 1727 (FISE=0) are not
allowed.
3-
Unused
2:0
R/W
0x1
ADWHS10:8
Active Display Window Start bits 10 to 8
Defines the start of the active TV display portion after the border
color. Values above 1715 (FISE=1) or 1727 (FISE=0) are not
allowed.
Offset 0x73
TTXHS
7:0
R/W
0x42
TTXHS
Start of signal on TTXRQ
Offset 0x74
TTXHL/TTXHD
7:4
R/W
0x5
TTXHL
Length of TTXRQ window; only active at old TTX protocol
Note: bit TTXO = 1
3:0
R/W
0x2
TTXHD
Indicates the delay in clock cycles between rising edge of TTXRQ
output and valid data at pin TTX.
Offset 0x75
CSYNCA
7:3
R/W
0x0
CSYNCA
Advanced composite sync against RGB output, adjustable from 0
XTAL clocks to 31 XTAL clocks
2:0
-
Unused
Offset 0x76
TTXOVS
7:0
R/W
0x5
TTXOVS
First line of occurrence of ttx data in odd field
line = (TTXOVS + 4) for M-systems
line = (TTXOVE +1) for other systems
PAL: TTXOVS = 0x05
NTSC: TTXOVS = 0x06
Bits
Read/
Write
Reset
Value
Name
(Field or Function)
Description