tda9725 NXP Semiconductors, tda9725 Datasheet - Page 24

• Manufacturer Part Number: tda9725
• Description: Y/c Automatic Adjustment Processor Vhs Standard
• Manufacturer: NXP Semiconductors

Philips Semiconductors
OPERATION MODE
Table 11 Operation mode (PART 1)
For PAL RECORD, SECAM ME RECORD, PAL PLAYBACK, SECAM ME PLAYBACK and NTSC PLAYBACK.
EP mode at NTSC PLAYBACK activates the same functions as LP mode.
Table 12 Operation mode (PART 2)
1996 Oct 14
YNR
NLE
NLDE
Noise
canceller
Picture
control
FM carrier interleave
Clamps
Character insert
Search noise clip
SQPB
Y/C automatic adjustment processor
(VHS standard)
FILTER
MODE
REC
PB
REC
PB
PB
PB
FUNCTION
YNR off; pin 47 HIGH
YNR 1; pin 47 medium
YNR 2; pin 47 LOW
YNR off; pin 47 HIGH
YNR 1; pin 47 medium
YNR 2; pin 47 LOW
YNR off; pin 47 HIGH
YNR 1; pin 47 medium
YNR 2; pin 47 LOW
CONDITIONS
REC
PB
REC or
PB
REC
PB
PB
OFF
OFF
OFF
OFF
VNC (strong)
LNC (weak)
NLE(C) + DTE NLE(D)
NLDE(C)
ON
ON
ON
SP
24
CONDITIONS
NORM
dropout;
maximum 128 lines
VIDEO; pin 42 LOW
WHITE; pin 42 = M1
BLACK; pin 42 = M2
SYNC; pin 42 HIGH
NORM
TRICK
VHS; pin 5
open-circuit
SQPB; pin 5 HIGH
EDIT OFF
vertical
emphasis
LNC (weak)
VNC (strong)
NLDE(D)
LP
ON
OFF
through
white level (85%)
black level
sync tip level
OFF
ON
VHS
SQPB
OFF
OFF
OFF
OFF
OFF
OFF
NLE(C)
NLDE(C)
WEAK
OFF
ON
SP
OPERATION
EDIT ON
Product specification
TDA9725
LNC (weak)
NLE(D)
NLDE(D)
LP