Specifications

Introduction

Direct Memory Access Controller (DMAC)

Direct memory access can be used with DMA peripherals. FIFO fill and

empty requests from these peripherals can be serviced immediately by

the DMAC without CPU interaction. Memory-to-memory DMA is also

supported.

The release version used is PL080 DMAC REL1v1.

For more information on DMA, see the ARM PrimeCell DMA (PL080)

Technical Reference Manual and Chapter 8 Direct Memory Access

Controller (DMAC).

Vectored Interrupt Controller (VIC)

The VIC enables the interrupt handler software to quickly dispatch

interrupt service routines in response to peripheral interrupts.

The release version used is PL190 VIC 1v1.

For more information on the VIC, see the ARM PrimeCell Vector

Interrupt Controller (PL190) Technical Reference Manual and

Chapter 17 Vectored Interrupt Controller (VIC).

Embedded Trace Macrocell (ETM9)

The ETM9 provides a trace port for real-time debug.

The release version used is ETM9 Rev2a. The ETM configuration for the

ARM926EJ-S Development Chip is Medium-Plus.

For more information on the ETM9, see the ETM9 Technical Reference

Manual.

Real Time Clock (RTC)

The RTC provides a one-second resolution clock. This keeps time when

the ARM926EJ-S Development Chip is inactive and can be used to wake

the chip up when a programmed alarm time is reached.

The release version used is PL031 RTC 1v0.

For more information on the RTC, see the ARM PrimeCell Real Time

Clock Controller (PL031) Technical Reference Manual and Chapter 11

Real-Time Clock (RTC).

Timer modules

The ARM926EJ-S Development Chip provides two Timer modules.

They can be used to, for example, generate periodic and timed interrupts

required by operating system services.

The release version used is SP804 TIMER r1p0-02ltd0.