參數(shù)資料
型號(hào)： 935261351112
廠(chǎng)商： NXP SEMICONDUCTORS
元件分類(lèi)： 顏色信號(hào)轉(zhuǎn)換
英文描述： COLOR SIGNAL DECODER, PDIP32
封裝： 0.400 INCH, PLASTIC, SOT-232, SDIP-32
文件頁(yè)數(shù)： 10/47頁(yè)
文件大?。?/td> 390K
代理商： 935261351112
1996 Jan 17
18
Philips Semiconductors
Preliminary specication
I2C-bus controlled, alignment-free PAL/NTSC/SECAM
decoder/sync processor with PALplus helper demodulator
TDA9144
INPUT SIGNALS
Table 6
Source select; note 1
Note
1. When ECMB = 1 and no current is drawn from the
Fscomb pin, source select is forced to be YC.
Table 7
Trap bypass; note 1
Note
1. The chrominance trap is always bypassed in YC mode
or when MACP = 1.
Table 8
Comb lter enable; note 1
Note
1. MACP = 1 or HD = 1 always enforces ECMB = 0.
Table 9
1 time constant
Table 10 Crystal indication
INA
INB
SOURCE
0
CVBS
01
YC
1
auto CVBS / YC
TB
CONDITION
0
trap not bypassed
1
trap bypassed
ECMB
CONDITION
0
comb lter disabled
1
comb lter enabled
FOA
FOB
MODE
0
auto
0
1
slow
1
fast
XA
XB
CRYSTAL
00
2
× 3.6 MHz
01
1
× 3.6 MHz
10
1
× 4.4 MHz
11
1
× 3.6 MHz and 1 × 4.4 MHz
Table 11 Forced eld frequency
Table 12 Output value I/O port
Table 13 Output value O port
Table 14
1 loop control
Table 15 Forced standard; note 1
Note
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, then colour will be switched off.
When SAF = 0, SECAM 60 Hz is disabled; when
SAF = 1, SECAM 60 Hz is enabled.
Table 16 Enable fast switch
FORF
FORS
FIELD FREQUENCY
0
auto; 60 Hz if no lock
0
1
60 Hz
1
0
50 Hz
1
auto; 50 Hz if no lock
OPA
LEVEL
0
LOW
1
HIGH
OPB
LEVEL
0
LOW
1
HIGH
POC
CONDITION
0
1 loop closed
1
1 loop open
FM
SAF
FRQF
STANDARD
0
auto search
1
0
PAL/NTSC second crystal
1
0
1
PAL/NTSC reference crystal
1
0
black and white
1
SECAM reference crystal
EFS
CONDITION
0
fast switch disabled
1
fast switch enabled, when FRGB = 0
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