saa5249 NXP Semiconductors, saa5249 Datasheet - Page 3

• Manufacturer Part Number: saa5249
• Description: Integrated Vip And Teletext With Background Memory Controller Ivt1.1bmcx
• Manufacturer: NXP Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
1996 Nov 07
handbook, full pagewidth
Integrated VIP and Teletext with
Background Memory Controller
OSCOUT
OSCIN
SEL2
SEL1
REF+
V
V DD2
V
V SS1
DD1
SSn
16, 22
46
45
3
12
38
7
8
4
5
A0 to A9
10
REGENERATOR
DATA SLICER
CONVERTER
OSCILLATOR
SAA5249
CRYSTAL
ANALOG
DIGITAL
CLOCK
GNDO
AND
TO
DCVBS
D0 to D3
6
4
Fig.1 Block diagram for SOT240-1 (DIP48) package.
DRAM INTERFACE
R/W
42
CAS0
23
CAS1
MUX
BLACK IREF
24
BACKGROUND
INPUT CLAMP
SEPARATOR
9
RAS
CONTROL
MEMORY
TIMING
CHAIN
SYNC
AND
3
41
11
Y
ACQUISITION
CVBS
DECODING
TELETEXT
29
AND
10
BLANK
21
POL
COR
13
DISPLAY
27
RGBREF
VCR/FFB
PROCESSING
20
PACKET 26
HAMMING
CHECKER
ENGINE
AND
15
INTERFACE
R/G/B
MEMORY
I C - BUS
3
DISPLAY
2
LOCKED
CLOCK
PHASE
Preliminary specification
PAGE
LOOP
17 to 19
ODD/EVEN
STTV/LFB
SAA5249
28
14
31
30
MLB304
SDA
SCL