ARM Cortex-A15 MPCore Processor Technical Reference Manual

Signal DescriptionsRead address channel signalsTable A-23 shows the read address channel signals for the ACP.Table A-23 Read address channel signalsSignal Type DescriptionARADDRS[39:0] Input AddressARBURSTS[1:0] Input Burst typeARCACHES[3:0] Input Cache typeARIDS[2:0] Input Request IDARLENS[3:0] Input Burst lengthARPROTS[2:0] Input Protection typeARREADYS Output Address readyARSIZES[2:0] Input Burst sizeARUSERS[5:0] Input User signals:• [5:2] Inner attributes:b0000 Strongly-ordered.b0001 Device.b0011 Normal Memory Non-Cacheable.b0110 Write-Through.b1011 Write-Back No Read-Allocate.b1111 Write-Back Read-Write-Allocate.• [1] Inner shareable.• [0] Outer shareable.ARVALIDS Input Address validRead data channel signalsTable A-24 shows the read data channel signals for the ACP.Table A-24 Read data channel signalsSignal Type DescriptionRDATAS[127:0] Output Read dataRIDS[2:0] Output Read IDRLASTS Output Read lastRREADYS Input Read readyRRESPS[1:0] Output Read responseRVALIDS Output Read validARM DDI 0438I Copyright © 2011-2013 ARM. All rights reserved. A-19ID062913Non-Confidential