Toshiba TC9457F User Manual

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TC9457F
2002-10-21
1
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC9457F
Firmware Built In Digital Servo
The TC9457F is a firmware incorporating CD digital servo
system. In addition to an LCD/LED driver, 4-channel 6-bit AD
converters, and 2-wire/3-wire serial interface, it has a buzzer
function, interrupt function, and 8-bit timer/counter. The CPU
allows selection of the operating clock from three types of crystal
oscillators (16.9344 MHz, 4.5 MHz, and 75 kHz), making
interfacing with a CD easy. The CD digital servo incorporates
various functions and circuits required for CD systems. These
include sync separation protection and interpolation, EFM
demodulation, error correction, digital equalizer for servoing, and
a servo control circuit. Furthermore, it contains a 1-bit DA
converter, so that when combined with the digital servo head
amp TA2109F, it allows you to create a maintenance-free,
extremely simple CD player system.
Features
· CMOStechnology DTS microcontroller LSI incorporating a CD digital servo and LCD/LED driver
· Operating supply voltage:
When CD is operating, V
DD
= 4.5 to 5.5 V (5.0 V typ.)
When CD is turned off, V
DD
= 2.7 to 5.5 V (CPU operating)
· Current consumption:
When CD is operating, I
DD
= 55 mA (typ.)
When CD is turned off, I
DD
= 2 mA (typ.) (using 4.5 MHz crystal; CPU operating)
When CD is turned off, I
DD
= 0.1 mA (using 75 kHz crystal; CPU operating)
· Operating temperature range: Ta = 40 to 85 °C
· Firmware
· Instruction execution time: 1.89/1.78/107 µs
· Crystal oscillator frequency: 16.9344 MHz/4.5 MHz/75 kHz
· AD converter: 6 bits, 4 channels
· LCD driver: 1/4 duty, 1/2 biased, maximum 72 segments
· LED driver: 4 digits × maximum 14 segments (shared with LCD driver in software)
· Timer/counter: 8 bits (timer clock selectable from INTR1, INTR2, instruction cycle, or 1 kHz)
· Serial interface: 3-wire/2-wire interface (data length: 4 or 8 bits)
· Buzzer: 0.625 to 3 kHz (8 types) ; 4 modes available-continuous, single, 10 Hz intermittent, and 10 Hz
intermittent at 1 Hz interval
· Interrupt: 1 external, 3 internal (CD subing synchronous, serial interface, 8 bits timer)
Weight: 1.6 g (typ.)
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Summary of Contents

Page 1 - TC9457F

TC9457F 2002-10-21 1 TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC9457F Firmware Built In Digital Servo The TC9457F is a firmwa

Page 2

TC9457F 2002-10-21 10Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Power supply voltage VDD −0.3~6.0 V Input voltage VIN −0.3~VDD

Page 3

TC9457F 2002-10-21 11VDD (CD unit power supply) Characteristics Symbol TestCircuitTest Condition Min Typ. Max UnitOperating supply voltage VDD ―

Page 4

TC9457F 2002-10-21 12I/O Ports (P1-0 to P4-3) Characteristics Symbol TestCircuitTest Condition Min Typ. Max UnitHigh level IOH3 ― VOH = 4.5 V −1

Page 5

TC9457F 2002-10-21 13DOUT, SBSY, SBOK, SEL, HSO, SPCK, SPDA, COFS Outputs Characteristics Symbol TestCircuitTest Condition Min Typ. Max UnitHigh

Page 6

TC9457F 2002-10-21 14Package Dimensions Weight: 1.6 g (typ.)

Page 7

TC9457F 2002-10-21 15 · TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices i

Page 8

This datasheet has been download from:www.datasheetcatalog.comDatasheets for electronics components.

Page 9

TC9457F 2002-10-21 2· CD digital servo system · Capable of decoding text data. · Sure and reliable sync pattern detection, sync signal protection,

Page 10

TC9457F 2002-10-21 3Pin Connection Diagram

Page 11

TC9457F 2002-10-21 4Block Diagram

Page 12

TC9457F 2002-10-21 5Description Of Pin Function Pin No. Symbol Pin Name Function And Operation Remarks 1~10 S1/OT5 ~ S10/OT14 LCD segment outputs

Page 13

TC9457F 2002-10-21 6Pin No. Symbol Pin Name Function And Operation Remarks 25 26~28 29 P3-0/DCREF P3-1/ADIN1 ~ P3-3/ADIN3 P4

Page 14

TC9457F 2002-10-21 7Pin No. Symbol Pin Name Function And Operation Remarks 45 SBOK Subcode Q data CRCC determination result output pin. It outputs

Page 15

TC9457F 2002-10-21 8Pin No. Symbol Pin Name Function And Operation Remarks 74 SEL APC circuit on/off signal output pin. When laser is on, this pin

Page 16

TC9457F 2002-10-21 9Pin No. Symbol Pin Name Function And Operation Remarks 92 INTR External interrupt input External interrupt input pin. When the

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