This document introduces the overview, port definition, key definition, key function and operation instructions, factory debugging and settings, and special function instructions of the technical document CPU-LA76938. The product is the latest development of Japan's Sanyo company, a two-in-one (CPU+decoding) color TV dedicated super single chip, with various function expansions, and can achieve from simple to high-end full range of chassis on a single PCB board.
This manual provides an overview of the LA76938, a dual‑function CPU/decoder chip developed by Sanyo for color TV sets. It describes the hardware characteristics such as memory size, I/O ports, A/D converters, PWM outputs, and timing modules, as well as the software capabilities like voltage and frequency tuning, language support, and special functions.
The document also defines the pin assignments, key definitions for both the unit and remote control, and explains how to perform factory debugging, EEPROM checks, and various optional features such as SCART, DVD, and hotel mode. Detailed tables list port control states and configuration options for developers and service technicians. This manual is written in Chinese.
| RAM | 512×8 bits |
|---|---|
| ROM | 32K or 48K selectable |
| I/O ports | 10 configurable ports |
| A/D converters | 5 × 8‑bit |
| PWM outputs | 3 × 7‑bit PWM |
| Instruction cycle | 0.85 µs minimum |
| Timers/Counters | 16‑bit timer/counter |
The chip provides 10 configurable I/O ports.
The minimum instruction cycle is 0.85 µs.
It includes five 8‑bit A/D converters.
The ROM can be either 32 KB or 48 KB.