Gk7102 Datasheet _best_

is a highly integrated System-on-Chip (SoC) developed by Goke Microelectronics

Firmware layout & hacking notes (observed patterns)

• Core Voltage (VDD_CORE): 1.2V ±5%. Exceeding 1.32V can permanently damage the die.
• I/O Voltage (VDD_IO): 3.3V ±10%.
• DDR2 Voltage (VDD_DDR): 1.8V (internal, but external decoupling is specified).
• Storage Temperature: -40°C to +125°C.
• Operating Temperature: -20°C to +85°C (industrial grades may vary).

1. Power Tree: 5V input → 3.3V LDO (for I/O) → 1.2V DCDC (for core).
2. Crystal: 24MHz (HC-49S or HC-49SMD) with 22pF caps.
3. Reset IC: A dedicated voltage supervisor (e.g., IMP809) monitoring the 3.3V rail.
4. Camera Sensor: Connected to MIPI lanes via AC coupling caps (100 nF).
5. Ethernet PHY: Realtek RTL8201F using RMII interface (pins PA0-PA7 muxed).
6. Storage: SPI flash (W25Q64) for firmware.

1. Normal mode (Video encoding): Approximately 400 mW to 600 mW.
2. Standby mode: Less than 200 mW.
3. Deep Sleep: Measured in microamps (µA).

GK7102 Datasheet: A Comprehensive Overview