This file is a Philips chip bus debugging method and debugging data, including TDA8844, TDA8843, TDA8839, TDA9373, TDA9808 and other chip debugging methods, debugging data and maintenance menu
This manual provides detailed operating instructions for the Sanfansic TDA8844 and TDA8843 electronic tuners. It describes the I2C bus interface, AGC configuration, VCO frequency options, RGB output settings, and the full set of menu functions for adjusting picture and audio parameters.
The document includes parameter tables, option menus, and troubleshooting notes to help users set up and fine‑tune the devices for various broadcast standards and signal conditions. This manual is written in Chinese.
| AGC RF range | 0‑3FH |
|---|---|
| VCO frequencies | 58.75 MHz, 45.75 MHz, 38.9 MHz, 38.0 MHz, 33.4 MHz, 33.9 MHz |
| RGB output voltage | 2.5 V |
The VCO can be set to 58.75 MHz, 45.75 MHz, 38.9 MHz, 38.0 MHz, 33.4 MHz, or 33.9 MHz.
The AGC RF range is programmable from 0 to 3FH.
The RGB output voltage is 2.5 V.