Western Digital 08 WD7910 free download

File name 08_WD7910.pdf

WD7910IWD7910LP TABLE OF CONTENTS Section Title Page 1.0 INTRODUCTION 8-1 1.1 Document Scope 8-1 1.2 Features 8-1 1.3 General Description 8-2 1.3.1 WD791 0 8-2 1.3.2 WD7910lP 8-2 2.0 ARCHITECTURE 8-4 2.1 Initialization And Clocking 8-4 2.2 AT Bus . . . . . . . 8-4 2.3 Main Processor Control 8-4 2.4 Numeric Processor Control 8-4 2.5 Data Bus . . . . . . . 8-4 2.6 Memory and EMS Control 8-4 2.7 Power Management Control 8-5 2.8 Register File . . . . . . 8-5 2.8.1 lock Status Register 8-5 2.8.2 lock/Unlock Register 8-6 2.9 VlBI Control . 8-6 2.10 Cache Control 8-6 3.0 SIGNAL DESCRIPTION 8-10 4.0 INITIALIZATION AND CLOCKING 8-19 4.1 Power-up Reset 8-19 4.2 Clocking 8-19 4.2.1 Internal Clock (ClK14) 8-19 4.2.2 System Bus Clock (SYSClK) 8-19 4.2.3 Processor Clock (CPUClK) . 8-19 4.2.4 CPU Clock (CPUClK) Control Register 8-21 5.0 AT BUS 8-24 5.1 Interrupt Multiplexing ... . 8-24 5.1.1 Data Acknowledge DACK7-5, 3-0 8-24 5.1.2 Data Request DRQIN