Template:mpu The CN3005-300 CP is a 64-bit single-core MIPS communication microprocessor (CP) designed by Cavium and introduced in 2006. This processor, which incorporates a single cnMIPS core, operates at 300 MHz and dissipates 2 Watts. This processors includes a number of hardware communication accelerators including units for high-performance packet I/O processing, QoS, and TCP acceleration. This MPU supports up to 2 GiB of DDR2-533 memory.

Cache

Main article: cnMIPS § Cache

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Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 24 KiB 24,576 B 0.0234 MiB L1I$ 16 KiB 16,384 B 0.0156 MiB 1x16 KiB 2-way set associative   L1D$ 8 KiB 8,192 B 0.00781 MiB 1x8 KiB 64-way set associative Write-through L2$ 64 KiB 0.0625 MiB 65,536 B 6.103516e-5 GiB     1x64 KiB 2-way set associative

Memory controller

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	Integrated Memory Controller
	Max Type DDR2-533 Supports ECC No Max Mem 2 GiB Controllers 1 Channels 1 Width 16 bit Max Bandwidth 1,017 MiB/s 0.993 GiB/s 1.066 GB/s 1,066.402 MB/s 9.698868e-4 TiB/s 0.00107 TB/s Bandwidth Single 1,017 MiB/s

Expansions

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	Expansion Options
	PCI Width 32 bit Clock 66.66 MHz Rate 254.31 MiB/s Features host or slave USB Revision 2.0 Ports 1 Rate 60 MB/s Features host / PHY UART Ports 2 GP I/O Yes

Networking

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	Networking
	MII GMII Yes (Ports: 1) RGMII Yes (Ports: 1)

Hardware Accelerators

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	Hardware Accelerators
	Networking TCP Yes QoS Yes

Block diagram

Datasheet

• OCTEON CN30XX Processors Product Brief