User Manual

EP7309/11/12 User’s Manual - DS508UM4 5-1
Copyright Cirrus Logic, Inc. 2003
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5
Chapter 5
5System Registers
Introduction
The SYSCON and SYSFLG registers control and repor t the status of the various
components of the EP73xx system-on-c hip device. There a re three read/write
SYSCON system configuration registers, and two SYSFLG read only system flag
registers.
Features
The system registers affect aspects of the following features and peripherals:
• Keyboard scanner
•Timers
• UART/SIR control
• Buzzer output control
•Debugmodeselect
• SSI/CODEC/DAI/ADC
•LCD
• Expansion c lock
•Wakeupcontrol
•SDRAM
•OStimercontrol
•
RUN/CLKEN select
• Clock speed/wait state select
•Version
• Media change detect
•Powerstatus
• RTC subdivide
• Boot mode status
•PartID
•VersionID
• MaverickKey Unique-ID