TDA9181 Просмотр технического описания (PDF) - Philips Electronics
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TDA9181 Datasheet PDF : 32 Pages
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Philips Semiconductors
Integrated multistandard comb filter
Objective specification
TDA9181
Mode definitions
Table 1 General mode definitions; note 1
PIN OUTSEL
LOW
HIGH
COMB
YC
MODE
Note
1. If the OUTSEL pin is left open-circuit, the pin is pulled
LOW by means of an internal pull-down resistor to
analog ground (AGND). Thus the COMB mode can
also be selected by not connecting the OUTSEL pin.
Table 2 Y/CVBSOUT output signal definitions
MODE
COMB
YC
Y/CVBSOUT OUTPUT SIGNAL
comb filtered luminance signal
Y/CVBS1 or Y/CVBS2 signal
Table 3 COUT output signal definitions
MODE
COMB
YC
COUT OUTPUT SIGNAL
comb filtered chrominance
signal
CIN signal
Table 4 Input switch mode definitions; note 1
PIN INPSEL
LOW
HIGH
INPUT SWITCH MODE
Y/CVBS1 input selected
Y/CVBS2 input selected
Note
1. If the INPSEL pin is left open-circuit, the pin is pulled
LOW by means of an internal pull-down resistor to
analog ground (AGND). Thus the Y/CVBS1 input can
also be selected by not connecting the INPSEL pin.
Table 5 FSC mode definitions; note 1
PIN FSCSEL
LOW
HIGH
FSC INPUT SIGNAL FREQUENCY
fSC
2 × fSC
Note
1. If the FSCSEL pin is left open-circuit, the pin is pulled
LOW by means of an internal pull-down resistor to
analog ground (AGND). Thus the fSC mode can also
be selected by not connecting the FSCSEL pin.
Table 6 Video standard mode definitions; note 1
PIN SYS1
LOW
LOW
HIGH
HIGH
PIN SYS2
LOW
HIGH
LOW
HIGH
VIDEO
STANDARD
PAL M
PAL B, G, H, D or I
NTSC M
PAL N
Note
1. If the SYS1 and SYS2 pins are left open-circuit, the
SYS1 pin is pulled HIGH by means of an internal
pull-up resistor to analog supply (VCCA) and the SYS2
pin is pulled LOW by means of an internal pull-down
resistor to analog ground (AGND). Thus the NTSC M
video standard can also be selected by not connecting
pins SYS1 and SYS2.
2000 Nov 22
6
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