Cirrus Logic EP73xx - Manual (Page 61)

EP7309/11/12 User’s Manual - DS508UM4 5-1

Copyright Cirrus Logic, Inc. 2003
55
5
Chapter 5
5 System Registers
Introduction
The SYSCON and SYSFLG registers control and report the status of the various
components of the EP73xx system-on-chip device. There are 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
• Debug mode select
• SSI/CODEC/DAI/ADC
• LCD
• Expansion clock
• Wakeup control
• SDRAM
• OS timer control
• RUN / CLKEN select
• Clock speed/wait state select
• Version
• Media change detect
• Power status
• RTC subdivide
• Boot mode status
• Part ID
• Version ID
• MaverickKey Unique-ID