TDA8433 Datasheet, PDF (7/25 Pages) NXP Semiconductors – Deflection processor for computer controlled TV receivers

Philips Semiconductors
Deflection processor for computer
controlled TV receivers
Product specification
TDA8433
HLOCKN - Horizontal lock
This bit indicates whether the
horizontal oscillator in the sync
processor is locked to the video
signal. When the oscillator is locked
HLOCKN is set to logic 0
(V₁₁ > 0.7 V). When the oscillator is
not locked HLOCKN is set to logic 1
(V₁₁ < 0.7 V).
HCENT - Horizontal centre
This bit is set to logic 0 when the
horizontal oscillator frequency is too
high (V₁₀ > V_ref). The bit is set to logic
1 when the frequency is too low
V₁₀ < V_ref).
IN - 50/60 Hz
The voltage at pin 11 also contains
the 50/60 Hz information where:
logic 0 = ≤ V₁₁ 0.75 V_CC (60 Hz or no
transmitter)
logic 1 = ≥ V₁₁ 0.75 V_CC (50 Hz)
The sequence of data in the status
byte is: PONRES, HLOCKN,
50/60 Hz, 0 0 0 0.
A write operation starts with address
byte 100011Ao0. The device is then
ready to receive the subaddress byte
e.g. trapezium (HEXOA) 00001010
followed by the data byte e.g. HEX20.
The DAC will then set the trapezium
correction signal into the selected
position (see Fig.5). If more data
bytes follow within one transmission
then, by means of an auto-increment,
the next highest subaddress will be
selected. Wrap-around occurs after
HEXOF.
Table 3 Registers
FUNCTION
H-frequency
SUB
ADDR
HEX
DATA
BITS
00
PHI-X-6
H-phase
01
6
Picture height V_21/20
02
6
V-linearity
03
6
V-S correction
04
6
V-shift
05
6
V-compensation
V₂₄ = 1.7 V
Picture width
06
5
07
6
E-W parabola
(Reg: 07 = 0)
08
6
E-W corner
(Reg: 08 = 3F)
09
6
Trapezium
Reg: 07 = 00; 08 = 20H
0A
6
H-compensation
0B
5
Reg. 07 = 00; 08 = 0; 09 = 00
V₂₄ = 1.7 V
PRESET
VALUE
HEX
01
01
01
01
01
01
01
01
01
01
01
01
SETT
HEX
MIN.
TYP.
MAX.
00 −
0.05 0.2
3F 9.5 10 11
00
−
0.05 0.2
3F 9.5 10 11
00 −
−19 −22
3F +15 +19 −
00 0
−
1
3F 13 17 21
00 0
−
1
3F
15
19
−
00 +17 +19 +22
3F −17 −19 +22
00 tbf 0
−
1F −8 −10 −12
00 −
1.6 2.4
3F 6.0 6.6 7.2
00 −
0.07 0.1
3F 7.0 7.5 8.5
00
−
0
tbf
3F 1.7 2.2 2.8
00
0.75 1.25 −
3F 1.0 1.9 −
00 0
1F −
tbf
−
10
−
UNIT
V
V
V
V
%
%
%
%
%
%
%
%
−
%
V
V
V
V
V
V
V
V
%
%
August 1991
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