Toshiba TC94A23F User Manual
Summary
The TC94A23F is a powerful single-chip CD processor designed for developing advanced digital servo systems, specifically for automotive and car radio stereo units. This integrated circuit combines a 4-bit microcontroller with essential features like LCD/LED drivers, built-in encoders, and comprehensive decoding capabilities (including sync separation protection and error correction). The manual provides detailed technical specifications, helping engineers integrate the chip into high-performance CD systems requiring stable playback and precise control for consumer electronics.
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TC94A23F
Toshiba CMOS Digital Integrated Circuit Silicon Monolithic
TC94A23F
Single-chip CD Processor with Built-in Controller
TC94A23F is a single-chip CD processor for digital servo. It incorporates a 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 k Hz), 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 RF amp TA2153FN or TA2109F, TC94A23F can very simply configure an
Weight: 1.6 g (typ.)
adjustment-free CD player. Thus, the IC is suitable for CD systems for automobiles and radio-cassette players.
Features Single-chip CD processor with built-in CMOS LCE/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 m A (typ.)
At CD off: IDD = 2 m A (with 4.5 MHz crystal oscillator, only CPU on) At CD off: IDD = 0.3 m A (with 75 k Hz crystal oscillator, only CPU on)
Operating temperature range: Ta = 40~85°C Package: QFP100-P-1420-0.65A (0.65-mm pitch, 2.7-mm thick) One-time PROM version: TC94AP09F
Page Summary Contents For Toshiba TC94A23F User Manual
Manual Details
| Brand | Toshiba |
|---|---|
| Pages | 20 |
| File Size | 220.14 KB |
| Published | May 29, 2026 |
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Frequently Asked Questions
What operating voltage does the TC94A23F require when CD is playing?
The operating voltage at CD on should be between V = 4.5 to 5.5 V (typ. 5.0 V).
How can I connect this processor to a fully functioning CD player system?
It must be combined with RF amp TA2153FN or TA2109F to configure the weight adjustment-free CD player.
What is the permissible operating temperature range for this chip?
The recommended operating temperature range Ta is -40~85°C.
Does the unit feature automatic focusing and tracking adjustments?
Yes, it incorporates auto adjustment of loop gain, offset, and balance at focus servo and tracking servo.