TDA9141 datasheet(13/25 Pages) PHILIPS

13 / 25 page

December 1992

Philips Semiconductors

Product speciﬁcation

PAL/NTSC/SECAM decoder/sync processor

TDA9141

INPUT SIGNALS

Table 4

Source select.

INA

INB

SOURCE

CVBS

−

auto CVBS/YC

Table 5

Trap bypass.

CONDITION

trap not bypassed

trap bypassed

Table 6

Comb ﬁlter enable.

ECMB

CONDITION

comb ﬁlter disabled

comb ﬁlter enabled

Table 7

Phase 1 time constant.

FOA

FOB

MODE

auto

slow

−

fast

Table 8

Crystal indication.

CRYSTAL

2 x 3.6 MHz

1 x 3.6 MHz

1 x 4.4 MHz

3.6 and 4.4 MHz

Table 9

Forced ﬁeld frequency.

FORF

FORS

FIELD FREQUENCY

auto; 60 Hz if no lock

60 Hz

50 Hz

auto; 50 Hz if no lock

Table 10 Output value I/O port.

OPA

CONDITION

LOW

HIGH

Table 11 Output value O port.

OPB

CONDITION

LOW

HIGH

Table 12 Phase 1 loop control.

POC

CONDITION

phase one loop closed

phase one loop open

Table 13 Forced standard.

Note to table 13

1. If XA and XB indicate that only one crystal is

connected to the IC and FM and FRQF force it to use

the second crystal the colour will be switched off.

SAF

FRQF

STANDARD

−−

auto search

PAL/NTSC second crystal

PAL/NTSC reference crystal

illegal

SECAM reference crystal

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