Firmware Built In Digital Servo
TC9457F
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC9457F
Firmware Built In Digital Servo
The TC9457F ...
Description
TC9457F
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.
Weight: 1.6 g (typ.)
Features
· · CMOS−technology DTS microcontroller LSI incorporating a CD digital servo and LCD/LED driver Operating supply voltage: When CD is operating, VDD = 4.5 to 5.5 V (5.0 V typ.) When CD is turned off, VDD = 2.7 to 5.5 V (CPU operating) Current consumption: When CD is operating, IDD = 55 mA (typ.) When CD is turned off, IDD = 2 mA (typ.) (using 4.5 MHz crystal; CPU operating) When CD is turned off, IDD = 0.1 mA (using 75 kHz crystal; CPU operating) Operating temperature range: Ta = −40 to 85 °C Firmware · Instruction executio...
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