TDA8842 查看數據表（PDF） - Philips Electronics
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TDA8842 Datasheet PDF : 68 Pages
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Philips Semiconductors
I2C-bus controlled PAL/NTSC/SECAM TV
processors
Tentative Device Specification
TDA884X/5X-N2 series
INPUT CONTROL BITS
Table 7 Source select
INA
INB
INC
SELECTED SIGNALS
CVBS1
OUTPUT
0 0 0 Internal CVBS+ audio Int. CVBS
0 0 1 External CVBS+ audio Ext. CVBS
0 1 0 Y/C + ext. audio
Y/C(Y+C)
0 1 1 CVBS3 + ext. audio CVBS3
1 0 0 Y/C + int audio, note 1 Int CVBS
1 1 0 Y/C + ext audio, note 1 Ext. CVBS
Note
1. These modes are intended for comb filter applications.
Table 8 Switch-on behaviour
BCO
0
1
STATUS
switch-on of picture without delay
switch-on of picture via internal delay
Table 9 Phase 1 (ϕ1) time constant
FOA FOB
MODE
0
0 normal
0
1 slow
1
0 slow/fast
1
1 fast
Table 10 Crystal indication
XA
XB
CRYSTAL
0
0 two 3.6 MHz
0
1 one 3.6 MHz (pin 34)
1
0 one 4.4 MHz (pin 35)
1
1 3.6 MHz (pin 34) and 4.4 MHz
(pin 35)
Table 11 Forced field frequency
FORF
0
0
1
1
FORS
0
1
0
1
FIELD FREQUENCY
auto (60 Hz when line not in sync)
60 Hz
keep last detected field frequency
auto (50 Hz when line not in sync)
Table 12 Interlace
DL
0 interlace
1 de-interlace
STATUS
Table 13 Stand-by
STB
0
1
stand-by
normal
MODE
Table 14 Synchronization mode
POC
0
1
active
not active
MODE
Table 15 Colour decoder mode
CM2
0
0
0
0
1
1
1
1
CM1
0
0
1
1
0
0
1
1
CM0
DECODER MODE
0 not forced, own intelligence
1 forced X-tal pin 34 PAL/NTSC
0 forced X-tal pin 34 PAL
1 forced X-tal pin 34 NTSC
0 forced X-tal pin 35 PAL/NTSC
1 forced X-tal pin 35 PAL
0 forced X-tal pin 35 NTSC
1 Forced SECAM (X-tal pin 35)
Table 16 Auto. Volume Levelling (TDA 8840/1/2/6/6A)
AVL
0 not active
1 active
MODE
Table 17 RGB blanking mode (TDA 8843/44/47/54/57)
HBL
0
1
MODE
normal blanking (horizontal flyback)
wide blanking
Table 18 Black current stabilisation
AKB
0
1
active
not active
MODE
December 16, 1997
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