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PDF SAA7182 Data sheet ( Hoja de datos )
| Número de pieza | SAA7182 | |
| Descripción | Digital Video Encoder EURO-DENC | |
| Fabricantes | NXP Semiconductors | |
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INTEGRATED CIRCUITS
DATA SHEET
SAA7182; SAA7183
Digital Video Encoder
(EURO-DENC)
Preliminary specification
Supersedes data of 1995 Sep 19
File under Integrated Circuits, IC22
1996 Jul 08
1 page  
Philips Semiconductors
Digital Video Encoder (EURO-DENC)
Preliminary specification
SAA7182; SAA7183
SYMBOL
VDDD5
VSSD5
n.c.
VDDD6
VSSD6
n.c.
XTALI
XTALO
n.c.
CREF
LLC
VDDD7
CDIR
VSSD7
VrefL1
VrefH1
VDDA1
BLUE
n.c.
VDDA2
GREEN
n.c.
VDDA3
RED
n.c.
IRGB
VDDA4
n.c.
n.c.
VSSA
IY/C/CVBS
CHROMA
VDDA5
Y
VDDA6
CVBS
PIN DESCRIPTION
38 digital supply voltage 5
39 digital ground 5
40 not connected
41 digital supply voltage 6
42 digital ground 6
43 not connected
44 Crystal oscillator input (from crystal). If the oscillator is not used, this pin should be connected
to ground.
45 Crystal oscillator output (to crystal).
46 not connected
47 Clock Reference signal. This is the clock qualifier for DIG-TV2 compatible signals.
48 Line-Locked Clock. This is the 27 MHz master clock for the encoder. The I/O direction is set
by the CDIR pin.
49 digital supply voltage 7
50 Clock direction. If the CDIR input is HIGH, the circuit receives a clock and optional CREF
signal, otherwise if CDIR is LOW CREF and LLC are generated by the internal crystal
oscillator.
51 digital ground 7
52 Lower reference voltage 1 input for the RGB DACs, connect to VSSA.
53 Upper reference voltage 1 input for the RGB DACs, connect via 100 nF capacitor to VSSA.
54 Analog supply voltage 1 for the RGB DACs.
55 Analog output of the BLUE component.
56 not connected
57 Analog supply voltage 2 for the RGB DACs.
58 Analog output of the GREEN component.
59 not connected
60 Analog supply voltage 3 for the RGB DACs.
61 Analog output of the RED component.
62 not connected
63 Current input for RGB amplifiers, connected via 15 kΩ resistor to VDDA.
64 Analog supply voltage 4 for the Y/C/CVBS DACs.
65 not connected
66 not connected
67 Analog ground for the DACs.
68 Current input for the Y/C/CVBS amplifiers, connected via 15 kΩ resistor to VDDA.
69 Analog output of the chrominance signal.
70 Analog supply voltage 5 for the Y/C/CVBS DACs.
71 Analog output of the luminance signal.
72 Analog supply voltage 6 for the Y/C/CVBS DACs.
73 Analog output of the CVBS signal.
1996 Jul 08
5
5 Page 
Philips Semiconductors
Digital Video Encoder (EURO-DENC)
Preliminary specification
SAA7182; SAA7183
Table 1 “CCIR 601” signal component levels
COLOUR
White
Yellow
Cyan
Green
Magenta
Red
Blue
Black
Y
235
210
170
145
106
81
41
16
Cb
128
16
166
54
202
90
240
128
SIGNALS(1)
Cr R(2)
128 235
146 235
16 16
34 16
222 235
240 235
110 16
128 16
Notes
1. Transformation:
a) R = Y + 1.3707 × (Cr − 128)
b) G = Y − 0.3365 × (Cb − 128) − 0.6982 × (Cb − 128)
c) B = Y + 1.7324 × (Cb − 128).
2. Representation of R, G and B at the output is 9 bits at 27 MHz.
Table 2 8-bit multiplexed format (similar to “CCIR 601”)
TIME
Sample
Luminance pixel number
Colour pixel number
0122
Cb0 Y0
0
Cr0 Y1
1
0
Table 3 16-bit multiplexed format (DTV2 format)
TIME
Sample Y line
Sample UV line
Luminance pixel number
Colour pixel number
0123
Y0 Y1
Cb0 Cr0
01
0
G(2)
B(2)
235 235
235 16
235 235
235 16
16 235
16 16
16 235
16 16
4567
Cb2 Y2
2
Cr2 Y3
3
2
4567
Y2 Y3
Cb2 Cr2
23
2
1996 Jul 08
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet SAA7182.PDF ] | |
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