SAA2023H PDF даташит
Спецификация SAA2023H изготовлена «Philips» и имеет функцию, называемую «Drive processor for DCC systems». |
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Детали детали
Номер произв | SAA2023H |
Описание | Drive processor for DCC systems |
Производители | Philips |
логотип |
30 Pages
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INTEGRATED CIRCUITS
DATA SHEET
SAA2023
Drive processor for DCC systems
Preliminary specification
File under Integrated Circuits, IC01
May 1994
Philips Semiconductors
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Philips Semiconductors
Drive processor for DCC systems
Preliminary specification
SAA2023
FEATURES
• Operating supply voltage: 4.5 to 5.5 V
• Low power dissipation: 260 mW at 5.0 V
• Single chip digital equalizer, tape formatting and error
correction
• 8-bit flash analog-to-digital converter (ADC) for low
symbol error rate
• Two switchable Infinite Impulse-Response (IIR) filter
sections
• 10-tap Finite Impulse-Response (FIR) filter per main
data channel, with 8 bit coefficients, identical for all main
channels
• 10-tap FIR filter for the AUX channel
• Analog and digital eye outputs
• Interrupt line triggered by internal auxiliary envelope
processing e.g. label, counter, and others
• Robust programmable digital PLL clock extraction unit
• Low power SLEEP mode
• Slew rate limited Electromagnetic Compatibility (EMC)
friendly output
• Digital Compact Cassette (DCC) optimized error
correction
• Programmable symbol synchronization strategy for tape
input data
• Microcontroller control of capstan servo possible during
playback and recording
• Frequency and phase regulation of capstan servo
during playback
• Choice of Dynamic Random Access Memory (DRAM)
and Static Random Access Memory (SRAM) types for
system Random Access Memory (RAM)
• Scratch pad RAM for microcontroller in system RAM
• Integrated interface for Precision Adaptive Sub-band
Coding (PASC) data bus
• Three wire microcontroller ‘L3’ interface
• Protection against invalid auxiliary data
• Seamless joins between recordings.
GENERAL DESCRIPTION
The SAA2023 performs the drive processor function in the
DCC system. This function is built up of digital equalizer,
error correction and tape formatting functions. The digital
equalizer is intended for use with DCC read amplifiers
TDA1318 or TDA1380. The tape formatting and error
correction circuit is intended for use with PASC ICs
SAA2003 and SAA2013, and write amplifiers TDA1319 or
TDA1381.
ORDERING INFORMATION
TYPE NUMBER
SAA2023H
SAA2023GP
PINS
80
80
PIN POSITION
TQFP80(1)
QFP80(1)
PACKAGE
MATERIAL
plastic
plastic
CODE
SOT315-1
SOT318-2
Note
1. When using reflow soldering it is recommended that the Dry Packing instructions in the “Quality Reference
Pocketbook” are followed. The pocketbook can be ordered using the code 9398 510 34011.
May 1994
2
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Philips Semiconductors
Drive processor for DCC systems
BLOCK DIAGRAM
Preliminary specification
SAA2023
handbook, full pagewidth
SAA2023
DIGITAL-
TO-ANALOG
CONVERTER
PHASE
LOCKED
LOOP
ZERO
CROSSING
FIR (1) IIR (2)
SBDIR
SBMCLK
SBEF
SBDA
SBCL
SBWS
TAPE
INPUT
BUFFER
AUXILIARY
ENVELOPE
DETECTION
SUB-BAND
I2S
INTERFACE
INTERNAL DATA BUS
ERROR
CORRECTOR
RAM
INTERFACE
8 11 6
ANALOG
TO-DIGITAL
CONVERTER
ANAEYE
RDSYNC
RDMUX
BIAS
Vref(p)
Vref(n)
EQUALIZER
MODULE
TAPE
OUTPUT
BUFFER
CONTROL
INTERFACE
TCLOCK
WDATA
SPEED
URDA
RESET
SLEEP
L3REF
L3DATA
MGB378
(1) FIR = Finite Impulse-Response.
(2) IIR = Infinite Impulse-Response.
Fig.1 Block diagram.
May 1994
3
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Номер в каталоге | Описание | Производители |
SAA2023 | Drive processor for DCC systems | Philips |
SAA2023GP | Drive processor for DCC systems | Philips |
SAA2023H | Drive processor for DCC systems | Philips |
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