Tc9457f – Toshiba TC9457F User Manual
Page 2
 
TC9457F
2002-10-21
2
· CD digital servo system
· Capable of decoding text data. 
· Sure and reliable sync pattern detection, sync signal protection, and interpolation. 
· Contains EFM demodulator circuit and subcode demodulator circuit. 
· CIRC logical equations to provide high correction capability: 
dual C1 correction and quadruple C2 correction.
· Supports variable-speed playback. 
· Jitter absorbing capability of +6 frames. 
· Contains 16 KB RAM. 
· Contains Digital OUT circuit. 
· Contains L/R independent digital attenuators. 
· Audio output responds to bilingual function. 
· Subcode Q data is free of read timing and can be output synchronously with audio data. 
(LCD/OT pin switchable by a program)
· Contains data slice and analog PLL (using adjustment-free VOC) circuits. 
· Loop gain, offset, and balance in focus and tracking servos can be automatically adjusted. 
· Contains RF gain automatic adjusting circuit. 
· Contains phase-correcting digital equalizer. 
· Contains coefficient RAM for digital equalizer, thus supporting various types of pickup. 
· Contains focus and tracking servo control circuit. 
· Servo control is possible in every mode available, providing fast and stable search. 
· Speed control method is adopted for lens and feed kick. 
· Contains AFC and APC circuits for disc motor CLV servo. 
· Contains defect and shock corrective circuit. 
· Contains 8 times oversampling digital filter and 1-bit DA converter. 
· 100 pin flat package.