Crystal oscillator

Quartz Oscillator 3225 20M OSC

The Gm5010 is a high-performance 208-pin microchip developed by Genesis, primarily designed for processing liquid crystal displays. The application circuit is illustrated in the diagram. This chip integrates several key components, including a powerful flat panel image processor, a three-channel signal input system, an OSD control circuit, an X86 microprocessor, a PLL clock generator, and intelligent ADC image processing modules. These features make it ideal for advanced display applications.

Gm5010 Image Digital Processing Control Circuit (a)

Gm5010 Image Digital Processing Control Circuit (b)

Pin 1 (HCLK/SCL): Line clock signal input or serial clock signal input.

Pin 2 (HFS/SDA): Line pulse signal input or serial data signal input.

Pin 3, 29, 45, 57, 70, 87, 101, 201, 9, 21, 31, 43, 61, 73, 83, 95, 113, 118, 192, 199: Ground for digital circuits.

Pin 4, 30, 46, 58, 72, 88, 102, 202: Power supply for digital circuits at 3.3V.

Pins 5–8: Digital signal input, sourced from pins 23–26 of U501 (M6759).

Pins 10, 22, 44, 32, 62, 74, 84, 96, 114, 119, 193, 200: Power supply for digital circuits at 2.5V.

Pins 11, 12: Unused.

Pin 13 (RESETn): Reset terminal, controlled by SW500 and powered by U503 pin 2.

Pin 14 (SCAN_TEST): Test pin, connected to ground.

Pins 15–28: Bootstrap simulation line inputs for bootstrapping.

Pins 33–40: Display port for outputting an 8-bit blue primary DA signal.

Pins 41–52: Display port for outputting an 8-bit green primary DA signal.

Pins 53–64: Display port for outputting an 8-bit red primary DA signal.

Pin 67 (DHS): Output line scan signal.

Pin 68 (DVS): Output field scan signal.

Pin 69 (DEN): Output DEN signal.

Pin 71 (DCLK): Output clock signal.

Pins 75–82: Display port for outputting an 8-bit blue primary DB signal.

Pins 85–94: Display port for outputting an 8-bit green primary DB signal.

Pins 97–106: Display port for outputting an 8-bit red primary DB signal.

Pins 107–116: Video signal port for inputting an 8-bit YUV signal from U800 (SAA7114H).

Pin 117 (VCLK): Clock signal input.

Pins 163, 164, 167, 168, 171, 172: Input for R, G, B forward and reverse image signals.

Pin 178 (XTAL): Clock oscillation input, using an external 24MHz voltage-controlled crystal oscillator.

Pin 179 (TCLK): Clock oscillation output, also using an external 24MHz voltage-controlled crystal oscillator.

Pin 195 (HS): Line sync signal input.

Pin 196 (VS): Field sync signal input.

Pins 206, 205, 204, 203, 198, 197, 66, 65: Input for 8-bit GPIO signals.

Pin 207 (DDC_SCL): I2C bus clock line, connected to VGA socket and U203 (24LC21A) memory.

Pin 208 (DDC_SDA): I2C bus data line, connected to VGA socket and U203 (24LC21A) memory.

Pins 123, 129, 135, 149, 150, 153, 155: 2.5V power supply connections.

Pins 120, 128, 134, 140, 143, 144, 160, 161, 165, 169, 173: 3.3V power supply connections.

Pins 174, 176, 181, 183, 185, 187, 189: 3.3V power supply connections.