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Cavium CN3005-300 CP
General Info
Designer	Cavium
Manufacturer	TSMC
Model Number	CN3005-300 CP
Part Number	CN3005-300BG350-CP
Market	Embedded
Introduction	January 30, 2006 (announced) May 1, 2006 (launched)
Release Price	$19
General Specs
Family	OCTEON
Series	CN3000
Frequency	300 MHz
Microarchitecture
ISA	MIPS64 (MIPS)
Microarchitecture	cnMIPS
Core Name	cnMIPS
Process	130 nm
Technology	CMOS
Word Size	64 bit
Cores	1
Threads	1
Max Memory	2 GiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
Power dissipation	2 W

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

[Edit/Modify Cache Info]

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

[Edit/Modify Memory Info]

	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

[Edit/Modify Expansions Info]

	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

[Edit/Modify Network Info]

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

Hardware Accelerators

[Edit/Modify Accelerators Info]

	Hardware Accelerators
	Networking TCP Yes QoS Yes

Block diagram

Datasheet

• OCTEON CN30XX Processors Product Brief