S5PC100 USER’S MANUAL (REV1.0)
PULSE WIDTH MODULATION TIMER
7.1-1
7.1
PULSE WIDTH MODULATION TIMER
1 OVERVIEW
The S5PC100 has five 32-bit timers. These timers generate internal interrupts to the ARM subsystem. In addition,
Timers 0, 1, and 2 include a Pulse Width Modulation (PWM) function which drives an external I/O signal. The
PWM for timer 0 has an optional dead-zone generator capability to support a large current device. Timer 3 and 4
are internal timers without output pins.
The Timers are normally clocked off of a divided version of the APB-PCLK. Timers 0 and 1 share a programmable
8-bit prescaler that provides the first level of division for the PCLK. Timer 2, 3, and 4 share a different 8-bit
prescaler. Each timer has its own, private clock-divider that provides a second level of clock division (prescaler
divided by 2,4,8, or 16). Alternatively, the Timers can select a clock source from an external pin. Timers 0,1, 2,
3,and 4 selects the external clock (PWM_TCLK )..
Each timer has its own 32-bit down-counter which is driven by the timer clock. The down-counter is initially loaded
from the Timer Count Buffer register (TCNTBn). If the down-counter reaches zero, the timer interrupt request is
generated to inform the CPU that the timer operation is complete. If the timer down-counter reaches zero, the
value of corresponding TCNTBn automatically reloads into the down-counter to start a next cycle. However, if the
timer stops, for example, by clearing the timer enable bit of TCONn during the timer running mode, the value of
TCNTBn is not reloaded into the counter.
The Pulse Width Modulation function (PWM) uses the value of the TCMPBn register. The timer control logic
changes the output level if down-counter value matches the value of the compare register in timer control logic.
Therefore, the compare register determines the turn-on time (or turn-off time) of a PWM output.
The TCNTBn and TCMPBn registers are double buffered to allow the timer parameters to be updated in the
middle of a cycle. The new values do not take effect until the current timer cycle completes.
Содержание S5PC100
Страница 1: ...USER S MANUAL S5PC100 June 2009 REV 1 01 Copyright 2009 Samsung Electronics Inc All Rights Reserved ...
Страница 13: ...PRODUCT OVERVIEW S5PC100 USER S MANUAL REV1 0 1 1 10 16 level alpha blending ITU BT601 656 format output ...
Страница 21: ...MEMORY MAP S5PC100 USER S MANUAL REV1 0 1 2 2 ...
Страница 33: ...BALL MAP SIZE POP S5PC100 USER S MANUAL REV1 0 1 1 8 VSS_HPLL AA12 VSSQ_UOTG AA19 VSS_UOTG AF21 VSS_ADC Y24 ...
Страница 34: ...S5PC100 USER S MANUAL REV1 0 BALL MAP SIZE POP 1 1 9 1 4 MCP CONNECTION ...
Страница 49: ...IROM CODE S5PC100 USER S MANUAL REV1 0 2 6 4 12 Mhz 300 0 Mhz 100 0 Mhz 79 5 Mhz 20 6 Mhz ...
Страница 159: ...S5PC100 USER S MANUAL REV1 0 CLOCK CONTROLLER 2 3 9 Figure 2 3 3 S5PC100 Clock Generation Circuit1 ...
Страница 174: ...CLOCK CONTROLLER S5PC100 USER S MANUAL REV1 0 2 3 24 Rs 0ohm Rf 1Mohm CL 10 35pF ...
Страница 322: ...CORESIGHT S5PC100 USER S MANUAL REV1 0 3 2 4 Figure 3 2 2 S5PC100 Coresight Structure ...
Страница 328: ...CORESIGHT S5PC100 USER S MANUAL REV1 0 3 2 10 Figure 3 2 6 Structure of the Coresight DAP Components ...
Страница 330: ...CORESIGHT S5PC100 USER S MANUAL REV1 0 3 2 12 Figure 3 2 7 ETB Block Diagram ...
Страница 345: ...S5PC100 USER S MANUAL REV1 0 ASYNC BRIDGE 3 4 3 Figure 3 4 2 Asynchronous Bridge Components ...
Страница 359: ...S5PC100 USER S MANUAL REV1 0 VECTORED INTERRUPT CONTROLLER 4 1 3 Figure 4 1 2 VIC Daisy Chain ...
Страница 524: ...S5PC100 USER S MANUAL REV1 0 CF CONTROLLER 5 5 29 48 DO9 Data 9 CF_D 9 49 D10 Data 10 CF_D 10 50 GND Ground ...
Страница 545: ...EXTERNAL BUS INTERFACE S5PC100 USER S MANUAL REV1 0 5 6 2 3 BLOCK DIAGRAM Figure 5 6 1 Memory Interface Through EBI ...
Страница 651: ...S5PC100 USER S MANUAL REV1 0 UART 8 1 27 Figure 8 1 10 UINTSP UINTP and UINTM block diagram ...
Страница 652: ...UART S5PC100 USER S MANUAL REV1 0 8 1 28 NOTES ...
Страница 743: ...S5PC100 USER S MANUAL REV1 0 MIPI HSI INTERFACE CONTROLLER 8 6 13 ...
Страница 756: ...MIPI HSI INTERFACE CONTROLLER S5PC100 USER S MANUAL REV1 0 8 6 26 NOTES ...
Страница 800: ...MIPI CSIS S5PC100 USER S MANUAL REV1 0 8 8 10 NOTES ...
Страница 816: ...USB HOST CONTROLLER S5PC100 USER S MANUAL REV1 0 8 9 16 ...
Страница 926: ...MODEM INTERFACE S5PC100 USER S MANUAL REV1 0 8 11 4 4 ADDRESS MAPPING Figure 8 11 2 MODEM I F Address Mapping ...
Страница 935: ...S5PC100 USER S MANUAL REV1 0 MODEM INTERFACE 8 11 13 NOTES ...
Страница 1019: ...S5PC100 USER S MANUAL REV1 0 DISPLAY CONTROLLER 9 1 5 Figure 9 1 2 Block Diagram of the Data Flow ...
Страница 1110: ...IMAGE ROTATOR S5PC100 USER S MANUAL REV1 0 9 2 2 3 1 ORIGINAL IMAGE 3 2 FLIP VERTICAL 3 3 FLIP HORIZONTAL ...
Страница 1111: ...S5PC100 USER S MANUAL REV1 0 IMAGE ROTATOR 9 2 3 3 4 180 DEGREE ROTATION ...
Страница 1112: ...IMAGE ROTATOR S5PC100 USER S MANUAL REV1 0 9 2 4 3 5 90 AND 270 DEGREE ROTATION ...
Страница 1118: ...S5PC100 USER S MANUAL REV1 0 CAMERA INTERFACE 9 3 3 Figure 9 3 2 Camera Interface Overview ...
Страница 1181: ...JPEG S5PC100 USER S MANUAL REV1 0 9 4 6 Figure 9 4 5 YCbCr4 2 2 Color Format ...
Страница 1199: ...JPEG S5PC100 USER S MANUAL REV1 0 9 4 24 NOTES ...
Страница 1245: ...3D ACCELERATOR S5PC100 USER S MANUAL REV1 0 9 6 18 ...
Страница 1310: ...S5PC100 USER S MANUAL REV1 0 3D ACCELERATOR 9 6 83 Figure 9 6 18 Per Fragment Function Block Diagram ...
Страница 1321: ...3D ACCELERATOR S5PC100 USER S MANUAL REV1 0 9 6 94 Interface with AXI Bus FIMG_3DSEV1 1 AXI DMA support AMBA AXI BUS protocol ...
Страница 1353: ...TVOUT VIDEO DAC S5PC100 USER S MANUAL REV1 0 9 7 32 ...
Страница 1452: ...S5PC100 USER S MANUAL REV1 0 VIDEO PROCESSOR 9 8 43 NOTES ...
Страница 1482: ...MIXER S5PC100 USER S MANUAL REV1 0 9 9 30 NOTES ...
Страница 1584: ...MFC MULTI FORMAT CODEC S5PC100 USER S MANUAL REV1 0 9 11 16 5 2 ENCODING FLOW Figure 9 11 11 Encoding Flow ...
Страница 1664: ...S5PC100 USER S MANUAL REV1 0 I2S CONTROLLER 5 1CH 10 2 31 NOTES ...
Страница 1701: ...AC97 CONTROLLER S5PC100 USER S MANUAL REV1 0 10 4 18 NOTES ...
Страница 1731: ...SPDIF TRANSMITTER S5PC100 USER S MANUAL REV1 0 10 6 16 NOTES ...
Страница 1744: ...S5PC100 USER S MANUAL REV1 0 ADC AND TOUCH SCREEN INTERFACE 10 7 13 NOTES ...
Страница 1750: ...KEYPAD INTERFACE S5PC100 USER S MANUAL REV1 0 10 8 6 Figure 10 8 7 Keypad I F Block Diagram ...
Страница 1755: ...S5PC100 USER S MANUAL REV1 0 KEYPAD INTERFACE 10 8 11 NOTES ...
Страница 1779: ...SECURE DOMAIN MANAGER S5PC100 USER S MANUAL REV1 0 11 2 22 NOTES ...
Страница 1841: ...S5PC100 USER S MANUAL REV1 0 ELECTRICAL DATA 12 1 9 EXTCLK tRESW nRESET Figure 12 1 4 Manual Reset Input Timing ...
Страница 1846: ...ELECTRICAL DATA S5PC100 USER S MANUAL REV1 0 12 1 14 6 ONENAND AC ELECTRICAL CHARACTERISTICS Figure 12 1 7 OneNand Flash Timing ...