SAA7205 Philips Semiconductors, SAA7205 Datasheet - Page 7

• Manufacturer Part Number: SAA7205
• Description: MPEG-2 systems demultiplexer
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1997 Jan 21
V
CCLKI
V
TTR
TTD
TTC
EVEN/ODD
V
VSYNC
HSYNC
COMSYNC
CbREF
CLK13.5
VIN
V
RAMIO3
RAMIO4
RAMIO5
RAMIO6
RAMIO7
OERAM
RAMIO2
RAMIO1
RAMIO0
V
RAMA0
RAMA1
RAMA2
RAMA3
RAMA4
RAMA5
RAMA6
RAMA7
V
RAMA12
RAMA14
RAMA11
RAMA9
RAMA8
RAMA13
WERAM
DDD2
SSD2
DDD3
SSD3
DDD4
SSD4
MPEG-2 systems demultiplexer
SYMBOL
PIN
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
supply
supply
supply
GND
GND
GND
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
digital supply voltage 2 (+5 V)
27 MHz demultiplexer chip clock Input
digital ground 2
teletext data request input (for VBI insertion of TXT)
serial teletext data output (6.75 or 6.9375 Mbit/s)
TXT clock (6.75 MHz = CCLKI/4)
field parity output, internally generated, locked to COMSYNC
digital supply voltage 3 (+5 V)
vertical sync output, locked to CCLKI and optionally VIN
horizontal sync output, internally generated
(CCIR601) composite sync (50 and 60 Hz)
indicating U samples in UY and VY video decoder output
equals CCLKI/2
receiver local vertical sync input, locked to CCLKI (optional)
digital ground 3
external SRAM input/output bus bit 3
external SRAM input/output bus bit 4
external SRAM input/output bus bit 5
external SRAM input/output bus bit 6
external SRAM input/output bus bit 7
output enable for external 32K
external SRAM input/output bus bit 2
external SRAM input/output bus bit 1
external SRAM input/output bus bit 0
digital supply voltage 4 (+5 V)
external SRAM address bus output bit 0
external SRAM address bus output bit 1
external SRAM address bus output bit 2
external SRAM address bus output bit 3
external SRAM address bus output bit 4
external SRAM address bus output bit 5
external SRAM address bus output bit 6
external SRAM address bus output bit 7
digital ground 4
external SRAM address bus output bit 12
external SRAM address bus output bit 14
external SRAM address bus output bit 11
external SRAM address bus output bit 9
external SRAM address bus output bit 8
external SRAM address bus output bit 13
write enable output for external SRAM (active LOW)
7
8 SRAM (active LOW)
DESCRIPTION
Preliminary specification
SAA7205H