saa5254 NXP Semiconductors, saa5254 Datasheet - Page 3

• Manufacturer Part Number: saa5254
• Description: Integrated Vip And Teletext Decoder Ivt1.1x
• Manufacturer: NXP Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
1996 Nov 07
Integrated VIP and teletext decoder
(IVT1.1X)
OSCOUT
OSCIN
REF
V SS1
5
6
2
3
DCVBS
REGENERATOR
Y
CONVERTER
OSCILLATOR
23
CRYSTAL
OSCGND
ANALOG
DIGITAL
SLICER
CLOCK
DATA
AND
TO
BLAN
4
19
Fig.1 Block diagram; SOT129 (DIP40).
COR
DISPLAY
21
RGBREF
18
BLACK IREF CVBS POL
ACQUISITION
SEPARATOR
DECODING
RGB
TELETEXT
AND SYNC
7
TIMING
CLAMP
CHAIN
INPUT
15 to 17 22
3
AND
9
ODD/EVEN
8
11
PROCESSING
VCR/FFB
PACKET 26
HAMMING
CHECKER
ENGINE
AND
SAA5254
DISPLAY
13
LOCKED
CLOCK
INTERFACE
PHASE
LOOP
MEMORY
I
2
PAGE
C-BUS
STTV/LFB
12
Preliminary specification
25
24
10
14
20
1
MLB207
SAA5254
SDA
SCL
V DD1
V DD2
V SS2
V SS3