TDA935x Philips, TDA935x Datasheet - Page 100

• Manufacturer Part Number: TDA935x
• Description: TV Signal Processor-Teletext Decoder with Embedded u-Controller
• Manufacturer: Philips

Philips Semiconductors
59. During switch-off the magnitude of the discharge current of the picture tube is controlled by the black current loop.
Table 132 Some examples for the FM-PLL filter
Table 133 Output current of the phase detector in the various conditions
Note
1. Gating is active during vertical retrace, the width is 22 s. This gating prevents disturbance due to Macro Vision Anti
2. Gating is continuously active and is 5.7 s wide
2001 Jan 18
TV signal processor-Teletext decoder with
embedded -Controller
VID
Dependent on the setting of the OSO bit the vertical scan can be stopped in an overscan position during that time so
that the discharge is not visible on the screen. The switch-off procedure is as follows:
a) When the switch-off command is received the RGB outputs are blanked for a time of about 2 ms.
b) If OSO = 1 the vertical scan is placed in an overscan position
c) If OSO = 0 the vertical deflection will keep running during the switch-off time
d) The soft-stop procedure is started with a reduction of the T
e) The fixed beam current is forced via the black current loop
f) The soft-stop time has a value of 43 ms, the fixed beam current is flowing during a time of 38 ms.
Copy signals.
0
BL
3dB
100
160
I
2
C-BUS COMMANDS
(kHz)
POC
0
0
0
0
0
0
0
0
1
FOA
0
0
0
0
0
1
1
1
C
S
4.7
4.7
FOB
(nF)
0
0
0
1
1
0
0
1
yes
yes
yes
yes
yes
yes
yes
IFI
no
IC CONDITIONS
100
yes
yes
yes
yes
yes
C
SL
no
no
P
820
330
(nF)
ON
NOISE
yes
yes
no
no
of the output stage from nominal to zero
TDA935X/6X/8X PS/N2 series
SCAN
200
200
200
200
200
30
30
30
6
R (k )
2.7
3.9
-1 CURRENT/MODE
V-RETR
Tentative Device Specification
300
300
300
300
300
30
30
30
6
GATING
yes
yes
yes
yes
yes
yes
no
no
no
(2)
(2)
(2)
(2)
(1)
(1)
0.5
0.5
slow/fast
slow/fast
normal
normal
normal
MODE
OSD
slow
slow
fast
off