The TC90A67F is a 1-chip PIP control IC that integrates ADC, video decoder (PAL/NTSC), vertical filter, field memory, DAC, etc.
The Toshiba TC90A67F is a CMOS digital integrated circuit that combines a video decoder (PAL/NTSC) and a PIP controller on a single chip. It accepts composite child‑screen signals and HD/VD timing from the parent screen, then outputs the selected picture in YUV or RGB format via an I²C‑controlled interface.
The document provides a detailed pin‑function table, system block diagram, package dimensions, and a full list of features such as a 24 MHz system clock, 8‑bit ADC/DAC, multiple video standards, and configurable horizontal/vertical down‑sampling ratios. This manual is written in Japanese.
| System clock frequency | 24 MHz |
|---|---|
| Supported video standards | NTSC, PAL, M‑PAL, N‑PAL (SECAM white only) |
| ADC resolution | 8‑bit |
| DAC resolution and channels | 8‑bit, 3‑channel YUV/RGB DAC |
| Power supply voltage | 38 V single |
| Horizontal down‑sampling ratios | 1/8, 1/4, 1/16 |
| Vertical down‑sampling ratios | 1/8, 1/4, 1/5, 1/6 |
It supports NTSC, PAL, M‑PAL and N‑PAL; SECAM is supported only in black‑and‑white mode.
The IC uses a 24 MHz synchronous system clock.
The device includes an 8‑bit DAC with three channels for YUV/RGB output.