參數(shù)資料
型號(hào): 935224740112
廠(chǎng)商: NXP SEMICONDUCTORS
元件分類(lèi): 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PDIP56
封裝: 0.600 INCH, PLASTIC, SOT-400, SDIP-56
文件頁(yè)數(shù): 15/75頁(yè)
文件大?。?/td> 522K
代理商: 935224740112
1997 Jul 01
22
Philips Semiconductors
Preliminary specication
I2C-bus controlled economy PAL/NTSC
and NTSC TV-processors
TDA837x family
INPUT CONTROL BITS
Table 12 Source select
Table 13 Phase 1 (
-1) time constant
Table 14 Crystal indication
Table 15 Forced eld frequency TDA8374 and TDA8375
Note
1. When switched to this mode while locked to a 50 Hz signal, the divider will only switch to forced 60 Hz when an
out-of-sync is detected in the horizontal PLL.
INA
INB
INC
SELECTED SIGNALS
(DECODER AND AUDIO)
SWITCH OUTPUT
0
internal CVBS plus audio
internal CVBS
0
1
external CVBS plus audio
external CVBS
0
1
0
Y/C plus external audio
Y/C (Y plus C)
0
1
CVBS3 plus external audio
CVBS3
1
0
Y/C plus internal audio
internal CVBS
1
0
Y/C plus external audio
external CVBS
FOA
FOB
MODE
0
normal
0
1
slow and gated
1
0
slow/fast and gated
1
fast
XA
XB
CRYSTAL
0
two 3.6 MHz crystals
0
1
one 3.6 MHz crystal (pin 34)
1
0
one 4.4 MHz crystal (pin 35)
1
3.6 MHz and 4.4 MHz crystals (pins 34 and 35)
FORF
FORS
FIELD FREQUENCY
0
auto (60 Hz when line not synchronized)
0
1
60 Hz; note 1
1
0
keep last detected eld frequency
1
auto (50 Hz when line not synchronized)
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