IT8502F View Datasheet(PDF) - ITE Tech. INC.

Part Name

Description

Manufacturer

IT8502F

Embedded Controller

ITE Tech. INC. 

Contents

7.11.2 Features ........................................................................................................................ 261

7.11.3 Functional Description ................................................................................................... 261

7.11.3.1 General Description ........................................................................................... 261

7.11.3.2 Manual Fan Control Mode.................................................................................. 263

7.11.4 EC Interface Registers ................................................................................................... 264

7.11.4.1 Channel 0 Clock Prescaler Register (C0CPRS) ................................................. 264

7.11.4.2 Cycle Time Register 0 (CTR0) ........................................................................... 265

7.11.4.3 Cycle Time Register 1 (CTR1) ........................................................................... 265

7.11.4.4 Cycle Time Register 2 (CTR2) ........................................................................... 265

7.11.4.5 Cycle Time Register 3 (CTR3) ........................................................................... 265

7.11.4.6 PWM Duty Cycle Register 0 to 7(DCRi) ............................................................. 266

7.11.4.7 PWM Polarity Register (PWMPOL) .................................................................... 266

7.11.4.8 Prescaler Clock Frequency Select Register (PCFSR) ........................................ 266

7.11.4.9 Prescaler Clock Source Select Group Low (PCSSGL) ....................................... 267

7.11.4.10 Prescaler Clock Source Select Group High (PCSSGH) ...................................... 268

7.11.4.11 Prescaler Clock Source Gating Register (PCSGR)............................................. 268

7.11.4.12 Fan 1 Tachometer LSB Reading Register (F1TLRR).......................................... 268

7.11.4.13 Fan 1 Tachometer MSB Reading Register (F1TMRR)........................................ 269

7.11.4.14 Fan 2 Tachometer LSB Reading Register (F2TLRR).......................................... 269

7.11.4.15 Fan 2 Tachometer MSB Reading Register (F2TMRR)........................................ 269

7.11.4.16 Zone Interrupt Status Control Register (ZINTSCR)............................................. 270

7.11.4.17 PWM Clock Control Register (ZTIER) ................................................................ 270

7.11.4.18 Channel 4 Clock Prescaler Register (C4CPRS) ................................................. 271

7.11.4.19 Channel 4 Clock Prescaler MSB Register (C4MCPRS) ...................................... 271

7.11.4.20 Channel 6 Clock Prescaler Register (C6CPRS) ................................................. 271

7.11.4.21 Channel 6 Clock Prescaler MSB Register (C6MCPRS) ...................................... 272

7.11.4.22 Channel 7 Clock Prescaler Register (C7CPRS) ................................................. 272

7.11.4.23 Channel 7 Clock Prescaler MSB Register (C7MCPRS) ...................................... 272

7.11.4.24 PWM Clock 6MHz Select Register (CLK6MSEL)................................................ 272

7.11.5 PWM Programming Guide ............................................................................................. 273

7.12 8-bit Timer (TMR)....................................................................................................................... 274

7.12.1 Overview ....................................................................................................................... 274

7.12.2 Features ........................................................................................................................ 274

7.12.3 Functional Description ................................................................................................... 274

7.12.3.1 General Description ........................................................................................... 274

7.12.3.2 TMR Counter (CNT) .......................................................................................... 275

7.12.3.3 TMR Duty Cycle (DCR)...................................................................................... 275

7.12.3.4 TMR Cycle Time (CTR) ..................................................................................... 275

7.12.3.5 TMR Mode ........................................................................................................ 275

7.12.3.6 TMR Interrupt .................................................................................................... 278

7.12.4 EC Interface Registers ................................................................................................... 279

7.12.4.1 TMR Prescaler Register (PRSC)........................................................................ 279

7.12.4.2 Group Clock Source and Mode Select Register (GCSMS) ................................. 280

7.12.4.3 A0 Cycle Time Register (CTR_A0)..................................................................... 280

7.12.4.4 A1 Cycle Time Register (CTR_A1)..................................................................... 280

7.12.4.5 B0 Cycle Time Register (CTR_B0)..................................................................... 280

7.12.4.6 B1 Cycle Time Register (CTR_B1)..................................................................... 281

7.12.4.7 A0 Duty Cycle Register (DCR_A0)..................................................................... 281

7.12.4.8 A1 Duty Cycle Register (DCR_A1)..................................................................... 281

7.12.4.9 B0 Duty Cycle Register (DCR_B0)..................................................................... 281

7.12.4.10 B1 Duty Cycle Register (DCR_B1)..................................................................... 281

7.12.4.11 Channel Clock Group Select Register (CCGSR) ................................................ 282

7.12.4.12 TMR Clock Enable Register (TMRCE) ............................................................... 282

7.12.4.13 TMR Interrupt Enable Register (TMRIE) ............................................................ 282

7.12.5 TMR Programming Guide .............................................................................................. 285

7.13 EC Access to Host Controlled Modules (EC2I Bridge) ................................................................ 286

www.ite.com.tw

xi

IT8502E/F/G V0.7.7

Share Link: