TDA4671 Datasheet, PDF (10/16 Pages) NXP Semiconductors – Picture Signal Improvement PSI circuit

Philips Semiconductors
Picture Signal Improvement (PSI) circuit
Product specification
TDA4671
Table 2 Function of the bits
DATA
DL0
DL1
DL2
DL3
DL4
CTI
SC5
LCF
PEAK
COR
PCONx
FUNCTION
set delay in luminance channel
set colour transient improvement
select sandcastle pulse voltage
set peaking frequency response
set peaking delay
set coring control
set peaking amplification
LOGIC 1
LOGIC 0
45 ns
0 ns
90 ns
0 ns
180 ns
0 ns
180 ns
0 ns
450 ns
0 ns
active
inactive
+5 V
+12 V
2.6 MHz
5.0 MHz
active
inactive
active
inactive
see Table 3
Table 3 Peaking amplification
PCON1
0
0
1
1
PCON0
0
1
0
1
GRADE OF PEAKING
(dB)
−3
0
+3
+6
Remarks to the subaddress bytes
Subaddresses 00H to 0FH are reserved for colour decoders and RGB processors.
Subaddresses 10 and 11 only are acknowledged.
General call address is not acknowledged.
Power-on-reset: D7 to D1 bits of data bytes are set to logic 0, D0 bit is set to logic 1.
1996 Dec 11
10