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Спецификация SAA7282ZP изготовлена «NXP Semiconductors» и имеет функцию, называемую «Terrestrial Digital Sound Decoder TDSD2». |
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Детали детали
Номер произв | SAA7282ZP |
Описание | Terrestrial Digital Sound Decoder TDSD2 |
Производители | NXP Semiconductors |
логотип |
25 Pages
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INTEGRATED CIRCUITS
DATA SHEET
SAA7282
Terrestrial Digital Sound Decoder
(TDSD2)
Product specification
File under Integrated Circuits, IC02
July 1993
No Preview Available ! |
Philips Semiconductors
Terrestrial Digital Sound Decoder (TDSD2)
Product specification
SAA7282
FEATURES
• Full EBU NICAM 728 specification decoder
• Microcomputer controlled via I2C-bus
• Automatic decoding and output configuration depending
upon transmission:
– digital stereo
– digital mono and data
– 2 independent mono signals
• On board RAM for de-interleaving and 10 to 14-bit word
expansion
• Automatic mute function which silences the digital data
and switches to FM sound (if valid) when error rate
exceeds user definable limit
• User mute function (MUTE pin) to enable user to
perform muting to their own software algorithm if
required, or to simply silence the output
• 4 times over-sampling digital filter
• Selectable digital de-emphasis
• 256 times over-sampling Noise Shapers
• Fully integrated 1-bit DACs
• Integrated switching networks allowing selection
between NICAM Sound, FM Sound or external
“Daisy-Chain” input
• Digital Audio Interface conforming with EBU/IEC 958
• I2C-bus transceiver enabling a master device to read
– status information
– error count byte
– additional data bits
and write:
– switch control codes
– decoder control
– upper and lower error rate limits.
APPLICATIONS
• Television receivers
• Video cassette recorders.
GENERAL DESCRIPTION
Performing all digital decoding functions for a NICAM 728
digital stereo sound system, the SAA7282 is a highly
integrated CMOS circuit which only requires a DQPSK
(Differential Quadrature Phase Shift Keying) demodulator
(TDA8732) and minimum external components to achieve
a full NICAM solution.
The device may also be interfaced to other DQPSK
demodulators.
QUICK REFERENCE DATA
SYMBOL
VDD
IDD
fXTAL
Tamb
PARAMETER
positive supply voltage
supply current
crystal frequency
operating ambient temperature
MIN.
4.5
−
−
0
TYP.
5.0
50
8.192
−
MAX.
5.5
100
−
70
UNIT
V
mA
MHz
°C
ORDERING INFORMATION
EXTENDED TYPE
NUMBER
SAA7282ZP
SAA7282GP
PINS
32
44
PIN POSITION
DIL32SHR
QFP
PACKAGE
MATERIAL
plastic
plastic
Note
1. SAA7282ZP: 32-DIL32SHR; plastic (SOT232A); SOT232-1; 1996 November 28.
2. SAA7282GP: 44-QFP; plastic (SOT205AG); SOT205-1; 1996 November 28.
July 1993
2
CODE
SOT232A(1)
SOT205AG(2)
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PORT2
SCL SDA ADSEL
3 46
5 I2C
RESET
2
DATA
NICAM
728
32 DECODING
AUTO
MUTE
DIGITAL
SWITCHING
VDAC CDL INTL
18 19 20
SAA7282ZP
1-BIT
DAC
NOISE
SHAPER
FILTER
DE-EMPH
i.c.
VDD
VSS
26
27
29
FREQ.
SYNTH.
XTAL
OSC
1 30 31 7
PCLK
XIN XOUT MUTE
DIGITAL
AUDIO
INTERFACE
28
DOBM
NOISE
SHAPER
1-BIT
DAC
17 16 15
VREF CDR INTR
VRC
25 V DDAL
24 VSSAL
23
OPL
BIAS
21
FML
22
EXTL
10
VRO
11
VRC
13
EXTR
14
FMR
VRC
12
8
9
MLB152
OPR
V DDAR
V SSAR
Fig.1 Block diagram; pin numbering for SOT232A.
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SAA7282ZP | Terrestrial Digital Sound Decoder TDSD2 | NXP Semiconductors |
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