Single-Chip CD Processor with Built-in Controller

The TC94A09F is a single-chip CD processor for digital servo. The IC has a built-in 4-bit microcontroller.

The controller features an LCD/LED driver, 4-channel 6-bit AD converter, 2/3-line serial interface, buzzer, interrupt function, and 8-bit timer/counter. The CPU can select one of three crystal oscillator operating clocks (16.9344 MHz, 4.5 MHz, and 75 kHz), facilitating interface with the CD processor.

The CD processor incorporates sync separation protection and interpolation, EFM decoder, error correction, digital equalizer for servo, and servo controller. The CD processor also incorporates a 1-bit DA converter. In combination with a RF amp TA2153FN and TA2109F, the TC94A09F can very simply configure an adjustment-free CD player.

Thus, the IC is suitable for CD systems for automobiles and radio-cassette players.

特性 Features

? Single-chip CD processor with built-in CMOS LCD/LED driver and 4-bit microcontroller

? Operating voltage At CD on: VDD = 4.5 to 5.5 V (typ. 5.0 V)

At CD off: VDD = 3.0 to 5.5 V (only CPU on)

? Current dissipation At CD on: IDD = 50 mA (typ.)

At CD off: IDD = 2 mA (with 4.5 MHz crystal oscillator, only CPU on)

At CD off: IDD = 0.3 mA (with 75 kHz crystal oscillator, only CPU on)

? Operating temperature range Ta = -40 to 85°C

? Package QFP100-P-1420-0.65A (0.65 mm pitch, 2.7 mm thick)

? One-time PROM version TC94AP09F