PWM ON SAMSUNG's S3C2410X

Building Embedded LINUX SYSTEM Outline SAMSUNG's S3C2410X components CLOCK & POWER MANAGEMENT PWM TIMER I/O PORTS Finally Project

Building Embedded LINUX SYSTEM SAMSUNG's S3C2410X components(1/4) 1.8V core, 3.3V memory, 3.3V external I/O microprocessor with 16KB I-Cache/16KB D-Cache/MMU External memory controller (SDRAM Control and Chip Select logic) LCD controller (STN and TFT) with 1-ch LCD-dedicated DMA 4-ch DMAs with external request pins 3-ch UART (IrDA1.0, 16-Byte Tx FIFO, and 16-Byte Rx FIFO) / 2-ch SPI

Building Embedded LINUX SYSTEM SAMSUNG's S3C2410X components(2/4) 1-ch multi-master IIC-BUS/1-ch IIS-BUS controller SD Host interface version 1.0 & Multi-Media Card Protocol version 2.11 compatible 2-port USB Host /1- port USB Device (ver 1.1) 4-ch PWM timers & 1-ch internal timer Watch Dog Timer 117-bit general purpose I/O ports / 24-ch external interrupt source Power control: Normal, Slow, Idle and Power-off mode

Building Embedded LINUX SYSTEM SAMSUNG's S3C2410X components(3/4) 8-ch 10-bit ADC and Touch screen interface RTC with calendar function On-chip clock generator with PLL

Building Embedded LINUX SYSTEM SAMSUNG's S3C2410X components(4/4)

Building Embedded LINUX SYSTEM CLOCK & POWER MANAGEMENT(1/3) The Clock control logic in S3C2410X can generate the required clock signals including FCLK for CPU, HCLK for the AHB bus peripherals, and PCLK for the APB bus peripherals. FCLK is used by ARM920T. HCLK is used for AHB bus, which is used by the ARM920T, the memory controller, the interrupt controller, the LCD controller, the DMA and the USB host block.

Building Embedded LINUX SYSTEM CLOCK & POWER MANAGEMENT(2/3) PCLK is used for APB bus, which is used by the peripherals such as WDT, IIS, I2C, PWM timer, MMC interface, ADC, UART, GPIO, RTC and SPI. The power management block controls the system clocks by software for the reduction of power consumption in the S3C2410X. These schemes are related to PLL, clock control logics (FCLK, HCLK, and PCLK) and wakeup signals.

Building Embedded LINUX SYSTEM CLOCK & POWER MANAGEMENT(3/3)

Building Embedded LINUX SYSTEM PWM TIMER(1/4) Five 16-bit timers Timer 0, 1, 2, and 3 have Pulse Width Modulation (PWM) function. Timer 4 has an internal timer only with no output pins. Two 8-bit prescalers & Two 4-bit divider The timer 0 and 1 share an 8-bit prescaler, while the timer 2, 3 and 4 share other 8-bit prescaler. Each timer has a clock divider which 5 different divided signals (1/2, 1/4, 1/8, 1/16, and TCLK ).

Building Embedded LINUX SYSTEM PWM TIMER(2/4) Programmable duty control of output waveform (PWM) Dead-zone generator The dead zone is for the PWM control in a power device.

Building Embedded LINUX SYSTEM PWM TIMER(3/4)

Building Embedded LINUX SYSTEM PWM TIMER(4/4)

Building Embedded LINUX SYSTEM I/O PORTS The S3C2410X has 117 multi-functional input/output port pins. The ports are: Port A (GPA): 23-output port Port B (GPB): 11-input/output port Port C (GPC): 16-input/output port Port D (GPD): 16-input/output port Port E (GPE): 16-input/output port Port F (GPF): 8-input/output port Port G (GPG): 16-input/output port Port H (GPH): 11-input/output port

Building Embedded LINUX SYSTEM Finally Project 撰寫一個驅動程式, 透過 PWM 裝置驅動馬達, 調整馬達 的輸出功率. Embedded system S3C2410 GPIO control line PWM Motor Controller