Digital Servo Single Chip Processor Built in 1 Bit DA Converter

The TC9495F is a single chip processor which incorporates the following function: synchronous separation protection and interpolation, EFM demodulation, Error correction, micro controller interface, digital equalizer for use in servo LSI and servo control circuit.
In addition, the TC9495F incorporates a 1 bit DA converter. In combination with the head amplifier TA2109F, TA2150FN, TA2153FN for digital servo, the TC9495F allow simplified, adjustment-free structuring of CD player system.

Features
• Capable of decode the text data.
• Sync pattern detection, sync signal protection and synchronization can be made correctly.
• Built in EFM demodulation circuit, subcode demodulation circuit.
• Capable of correcting dual C1 correction and quadruple C2 correction using the CIRC correction theoretical format.
• The TC9495F respond to variable playback system.
• Jitter absorbing capacity of ±6 frames.
• Built in 16 KB RAM.
• Built in digital out circuit.
• Built in L/R independent digital attenuator.
• Audio output responds to bilingual function.
• Reed timing free subcode Q data and capable of synchronous output with audio data.
• Built in data slicer and analog PLL (free-adjustment VCO).
• Capable of automatic adjustment function of focus servo and tracking servo, for loop gain, offset and balance.
• Built in RF gain automatic adjustment circuit.
• Built in digital equalizer for phase compensation.
• Built in RAM for digital equalizer for coefficient, and capable of variable pickup.
• Built in focus, tracking servo control circuit.
• Search control corresponds to every mode and can realize high speed and stable search.
• Lens-kick and feed-kick are using speed controlled form.
• Built in AFC circuit and APC circuit for CLV servo of disc motor.
• Built in anti-defect and anti-shock circuit.
• Built in 8 times over sampling digital filter and 1 bit DA converter.
• Built in analog filter for 1 bit DA converter.
• Output format for audio out can be selected 32 fs, 48 fs, or 64 fs modes.
• Built in zero data detect output circuit.
• The TC9495F capable of 4 times speed operation.
• Built in micro controller interface circuit.
• CMOS silicon structure and high speed, low power consumption.
• 100 pin flat package.