The Loongson 1B Processor User Manual provides architecture overview, register descriptions, pin definitions, and detailed information on CPU, DDR2, LCD…
This manual describes the Loongson 1B processor, covering its overall architecture, pinout, address space allocation, and power/reset requirements. It serves as a reference for developers and engineers working with the chip.
The document is organized into sections for each major subsystem, including the CPU core, DDR2 controller, LCD controller, USB host, GMAC0/1, SPI, UART, CAN, I2C, PWM, and other peripherals, with register tables and programming guidelines. This manual is written in Chinese.
| Core supply voltage (VDD_1V2) | 1.08 V – 1.32 V |
|---|---|
| DDR2 supply voltage (VDD_1V8) | 1.62 V – 1.98 V |
| I/O supply voltage (VDD_3V3) | 2.97 V – 3.63 V |
The core supply voltage (VDD_1V2) ranges from 1.08 V to 1.32 V.