User's Manual

Table Of Contents
x S3C2450X RISC MICROPROCESSOR
Table of Contents (Continued)
Chapter 12 WatchDog Timer
1 Overview....................................................................................................................................................12-1
1.1 Features...........................................................................................................................................12-1
2 Watchdog Timer Operation .......................................................................................................................12-2
2.1 Block Diagram..................................................................................................................................12-2
2.2 WTDAT & WTCNT...........................................................................................................................12-2
2.3 Consideration of Debugging Environment.......................................................................................12-3
3 Watchdog Timer Special Registers...........................................................................................................12-4
3.1 Watchdog Timer Control (WTCON) Register ..................................................................................12-4
3.2 Watchdog Timer Data (WTDAT) Register .......................................................................................12-5
3.3 Watchdog Timer Count (WTCNT) Register.....................................................................................12-5
Chapter 13 PWM Timer
1 Overview....................................................................................................................................................13-1
1.1 Feature.............................................................................................................................................13-1
2 PWM Timer Operation...............................................................................................................................13-3
2.1 Prescaler & Divider ..........................................................................................................................13-3
2.2 Basic Timer Operation .....................................................................................................................13-4
2.3 Auto Reload & Double Buffering......................................................................................................13-5
2.4 Timer Initialization Using Manual Update Bit and Inverter Bit .........................................................13-6
2.5 Timer Operation ...............................................................................................................................13-7
2.6 Pulse Width Modulation (PWM).......................................................................................................13-8
2.7 Output Level Control........................................................................................................................13-9
2.8 DEAD Zone Generator ....................................................................................................................13-10
2.9 DMA Request Mode.........................................................................................................................13-11
3 PWM Timer Control Registers .................................................................................................................13-12
3.1 Timer Configuration Register0 (TCFG0) ..........................................................................................13-12
3.2 Timer Configuration Register1 (TCFG1) .........................................................................................13-13
3.3 Timer Control (TCON) Register .......................................................................................................13-14
3.4 Timer 0 Count Buffer Register & Compare Buffer Register (TCNTB0/TCMPB0) ...........................13-16
3.5 Timer 0 Count Observation Register (TCNTO0) .............................................................................13-16
3.6 Timer 1 Count Buffer Register & Compare Buffer Register (TCNTB1/TCMPB1) ...........................13-17
3.7 Timer 1 Count Observation Register (TCNTO1) .............................................................................13-17
3.8 Timer 2 Count Buffer Register & Compare Buffer Register (TCNTB2/TCMPB2) ...........................13-18
3.9 Timer 2 Count Observation Register (TCNTO2)
.............................................................................
13-18
3.10 Timer 3 Count Buffer Register & Compare Buffer Register (TCNTB3/TCMPB3) .........................13-19
3.11 Timer 3 Count Observation Register (TCNTO3) ...........................................................................13-19
3.12 Timer 4 Count Buffer Register (TCNTB4) .....................................................................................13-20
3.13 Timer 4 Count Observation Register (TCNTO4) ...........................................................................13-20