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Cavium CN5850-900 SCP
General Info
Designer	Cavium
Manufacturer	TSMC
Model Number	CN5850-900 SCP
Part Number	CN5850-900BG1521-SCP
Market	Network
Introduction	October 9, 2006 (announced) February, 2007 (launched)
General Specs
Family	OCTEON Plus
Series	CN58xx
Frequency	900 MHz
Microarchitecture
ISA	MIPS64 (MIPS)
Microarchitecture	cnMIPS
Process	90 nm
Technology	CMOS
Word Size	64 bit
Cores	12
Threads	12
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Packaging
Package FCBGA-1521 (BGA) Ball Count 1521 Interconnect BGA-1521

CN5850-900 SCP is a 64-bit dodeca-core MIPS secure communication microprocessor (SCP) designed by Cavium and introduced in 2007. This processor, which incorporates twelve cnMIPS cores, operates at 900 MHz and supports up to DDR2-800 ECC memory. This MPU includes a number of hardware accelerators specifically for improving the performance of secure communication software such as encryption, compression/decompression, and TCP acceleration.

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$ 576 KiB 589,824 B 0.563 MiB L1I$ 384 KiB 393,216 B 0.375 MiB 12x32 KiB 64-way set associative   L1D$ 192 KiB 196,608 B 0.188 MiB 12x16 KiB 64-way set associative   L2$ 2 MiB 2,048 KiB 2,097,152 B 0.00195 GiB     1x2 MiB 8-way set associative

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR2-800 Supports ECC Yes Controllers 1 Channels 1 Width 128 bit Max Bandwidth 11.92 GiB/s 12,206.08 MiB/s 12.799 GB/s 12,799.003 MB/s 0.0116 TiB/s 0.0128 TB/s Bandwidth Single 11.92 GiB/s

Expansions

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	Expansion Options
	PCI-X Width 64 bit Clock 133.33 MHz Rate 1,017.25 MiB/s Features host or slave UART Ports 2 GP I/O Yes

Networking

[Edit/Modify Network Info]

	Networking
	MII RGMII Yes (Ports: 8) SPI SPI-4.2 Yes (Ports: 2)

Hardware Accelerators

[Edit/Modify Accelerators Info]

	Hardware Accelerators
	Encryption Hardware Implementation Yes Types DES, 3DES, AES-GCM, AES up to 256, SHA1, SHA-2 up to SHA-512, RSA up to 8192, DH, KASUMI Networking TCP Yes QoS Yes

Block diagram

Datasheet

• OCTEON CN58XX Processors Product Brief