For a description of the parity error scheme and parity error signals, refer to the Cortex*-A9 Technical Reference Manual, available on the ARM* website. ARM CORTEX A9 MPCORE TECHNICAL REFERENCE MANUAL ULENHBXHSZ ULENHBXHSZ | PDF | 95 Pages | ARM CORTEX A9. f For further information about Cortex-A9 MPCore configurable options, refer to the. Introduction chapter of the Cortex-A9 MPCore Technical Reference Manual, .
If the data is not in the L2 cache memory, the read is finally forwarded to main memory. Denotes arguments to monospace text where the argument is to be replaced by a specific value. The differences between the two revisions are: In addition to optimizing performance, using a bit access width will allow you to use ECC. To be kept coherent, the memory must be marked as Write-Back, Shareable, Normal memory. Figure on page shows an example multiprocessor configuration.
When the processor writes to any coherent memory location, the SCU ensures that the relevant data is referene updated, tagged or invalidated. This means that the topmost megabyte of address space of memory can be included in the filtering address range.
Release Information The More information. Product revision status The rnpn identifier indicates the revision status of the product described in this book, where: Corteex-a9 set of private memory-mapped peripherals, including a global timer, and a watchdog and private timer for each Cortex-A9 processor present in the cluster.
All other attributes are forwarded to the L2 cache. Trend Micro Incorporated reserves the right to make changes to this document and to the products described herein without notice.
Attributes See the register summary in SCU registers on page See the following documents for other relevant information: Include symptoms and diagnostic procedures if appropriate. Symbolic interrupt names are defined in a header file distributed with the source installation for your operating system. Usage mcpore This register is writable in Secure state if the relevant bit referenxe the SAC register is set.
Similarly, the SCU monitors read operations from a coherent memory location. Release Information The following changes More information. This includes connecting it to a memory system and peripherals.
Denotes text that you can enter at the keyboard, such as commands, file and program names, and source code. The interactive debugging features can be controlled by external JTAG tools or by processor-based monitor code. This is the default value.
Main Processor – Vita Development Wiki
If an eviction was executed from L1 cache, then two consecutive writes to L2 memory occur over the AXI bus: It continues incrementing after sending interrupts. For a cache miss during a read access, the request is forwarded to L2 memory, which returns the data directly to the ACP.
Arria 10 SX Device Errata. See Address filtering capabilities on page This bit is set to 0 by default When set, coherent linefill requests are sent speculatively to the L2C in parallel with the tag look-up. Using this book This book is organized into the following chapters: Writing to these bits has no effect if the Cortex-A9 MPCore processor has fewer than three processors. The global timer has the following features: AXI Performance Monitor v5.
Timing diagrams The figure named Key to timing diagram conventions on page rreference explains the components used in timing diagrams.
AxUSER shared attribute must be set to 0x1 for coherent accesses.
When a shared access is received on the ACP, caches are checked for coherency of the requested address. Cambridge UK 2nd November Sponsored by: The SCU performs the following functions: Reference to a feature that is included means that the appropriate build and pin configuration options are selected. If a cache hit occurs during a write access, the affected cache lines are cleaned and invalidated. To make this website work, we log user data and share it with processors.