CL-PS7111-VC-A View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CL-PS7111-VC-A

Low-Power System-on-a-Chip

Cirrus Logic 

CL-PS7111

Low-Power System-on-a-Chip

5.26 Clear All Start Up Reason Flags Location — STFCLR

A write to this location clears all the start-up reason flags in the System Flags Status register (SYSFLG).

5.27 Battery Low End-of-Interrupt — BLEOI

A write to this location clears the interrupt generated by a low battery (falling BATOK with NEXTPWR

high).

5.28 Media Changed End-of-Interrupt — MCEOI

A write to this location clears the interrupt generated by a rising edge of the NMEDCHG input pin.

5.29 Tick End-of-Interrupt Location — TEOI

A write to this location clears the current pending tick interrupt and watchdog interrupt.

5.30 End--of-Interrupt Location — TC1EOI TC1

A write to this location clears the under-flow interrupt generated by TC1.

5.31 End-of-Interrupt Location — TC2EOI TC2

A write to this location clears the under-flow interrupt generated by TC2.

5.32 RTC Match End-of-Interrupt — RTCEOI

A write to this location clears the RTC match interrupt.

5.33 UART1 Modem Status Changed End-of-Interrupt — UMSEOI

A write to this location clears the modem status changed interrupt.

5.34 Codec End-of-Interrupt Location — COEOI

A write to this location clears the sound interrupt (CSINT).

5.35 Enter Idle State Location — HALT

A write to this location places the system into the idle state by halting the clock to the processor until an

interrupt is generated. A write to this location while there is an active interrupt has no effect.

5.36 Enter Standby State Location — STDBY

A write to this location places the system into the standby state by halting the main oscillator. It automat-

ically switches the DRAMs to self-refresh if the RFSHEN bit is set in the DRAM Refresh Period register.

All transitions to the standby state are synchronized with DRAM cycles. A write to this location while there

is an active interrupt has no effect.

September 1997

PRELIMINARY DATA BOOK v2.0

69

REGISTER DESCRIPTIONS

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