TC9457F

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...