System Peripheral - Samsung S5PC110 Manual

S5PC110_UM

1.3.7 SYSTEM PERIPHERAL

The key features of system peripheral include:
• Real Time Clock
− Full clock features: sec, min, hour, date, day, month, and year
− 32.768kHz operation
− Alarm interrupt
− Time-tick interrupt
• PLL
− Four on-chip PLLs, APLL/MPLL/EPLL/VPLL
− APLL generates ARM core and MSYS clocks
− MPLL generates a system bus clock and special clocks
− EPLL generates special clocks
VPLL generates clocks for video interface
−
• Keypad
− 14x8 Key Matrix support
− Provides internal de-bounce filter
• Timer with Pulse Width Modulation
− Five channel 32-bit internal timer with interrupt-based operation
− Three channel 32-bit Timer with PWM
− Programmable duty cycle, frequency, and polarity
− Dead-zone generation
− Supports external clock source
• System timer
− Accurate timer provides exact 1ms tick at any power mode except sleep
− Interrupt interval can be changed without stopping reference tick timer
• DMA
− Micro-code programming based DMA
− The specific instruction set provides flexibility to program DMA transfers
− Supports linked list DMA function
− Supports three enhanced built-in DMA with eight channels per DMA, so the total number of channels
supported are 24
− Supports one Memory-to-memory type optimized DMA and two Peripheral-to-memory type optimized
DMA
− M2M DMA supports up to 16 burst and P2M DMA supports up to 8 burst
• A/D Converter and Touch Screen Interface
− 10 channel multiplexed ADC
− Maximum 500Ksamples/sec and 12-bit resolution
• Watch Dog Timer
• 16-bit watch dog timer
1 OVERVIEW OF S5PC110
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