saa5284 NXP Semiconductors, saa5284 Datasheet - Page 4

• Manufacturer Part Number: saa5284
• Description: Multimedia Video Data Acquisition Circuit
• Manufacturer: NXP Semiconductors

Philips Semiconductors
5
1. Input clamp and sync separator
2. Analog-to-digital converter
3. Multi-standard data slicer and clock regenerator
4. Packet filtering; (8 and 4) Hamming correction
5. On-chip data cache
6. Line selectable data type
6
1998 Feb 05
handbook, full pagewidth
Multimedia video data acquisition circuit
CVBS0
CVBS1
BLACK
(1) Multi-functional pins, see Chapter 7.
MAIN FUNCTIONAL BLOCKS
BLOCK DIAGRAM
I REF
15
14
13
12
V DDA V SSA V DDX V DDD V SSD3
16
OSCOUT
DEMODULATOR)
7
OSCILLATOR
CONVERTER
AND TIMING
DATA BYTE
17
VIDEO TO
ANALOG
ANALOG
SWITCH
OSCIN
(DATA
8
6
OSCGND
SAA5284
9
41
40
FRONT END CONTROL
FILTERING (e.g.
PACKET BUFFER RAM
PACKET BUFFER AND
WST packets
RESET
V SSD1
PACKET
30/31)
REGISTERS
(45 packets)
18
1
2 kbyte
Fig.1 Block diagram.
VPOIN0
V SSD2
38
VPOIN1
19
39
4
HREF
7. 12, 13.5, 15 and 16 MHz clock or oscillator options
8. FIFO access to data
9. Interrupt and DMA support
10. Multi-standard parallel interface
11. I
12. Power-on reset.
Figure 1 shows a block diagram of the SAA5284.
2
LLC2
FIFO
2
C-bus interface
43
LLC
42
WR
MULTI-STANDARD
HOST INTERFACE
(1)
33
INTERFACE
RD
I
400 kHz
2
SLAVE
C-BUS
(1)
34
DMARQ
DMACK
36
37
(1)
control
data path
30 to 28
20 to 27
Objective specification
35
44
31
32
10
11
5
3
4
SAA5284
8
MGG740
3
SCL
SDA
CS0
CS1
INT
RDY
SEL0
SEL1
DENB
A2 to A0
D7 to D0
(1)
(1)
(1)