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7811 PDF 데이터시트 ( Data , Function )

부품번호 7811 기능
기능 Network Security Processor
제조업체 Hi-fn
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7811 데이터시트, 핀배열, 회로
DATA SHEET 7811 Network Security
Processor




7811 pdf, 반도체, 판매, 대치품
® 7811 Network Security Processor
12.2 PCI Timing....................................................................................... 125
12.3 MIPS Interface Timing .................................................................... 125
12.4 SDRAM Timing............................................................................... 125
13 Physical Specifications ............................................................................ 126
13.1 Package Dimensions ........................................................................ 126
13.2 Pin Configuration............................................................................. 128
Figures
Figure 1. System concept..................................................................................... 8
Figure 2. Ordering information............................................................................ 9
Figure 3. Block Diagram of the 7811 ................................................................ 10
Figure 4. Functional units in the 7811 ................................................................11
Figure 5. Pipeline configurations for encryption and decryption....................... 14
Figure 6. Group 0 registers ................................................................................ 15
Figure 7. Group 1 register summary .................................................................. 17
Figure 8. Big-endian conversion in the 7811 ..................................................... 20
Figure 9. Elements of a 7811 subsystem............................................................ 22
Figure 10. Typical subsystem............................................................................. 23
Figure 11. High Performance Subsystem........................................................... 24
Figure 12. Minimal (no CPU) subsystem .......................................................... 24
Figure 13. Signal Description ............................................................................ 28
Figure 14. Recommended terminations if MIPS processor is not used ............. 29
Figure 15. Usage of PCI memory space by the 7811......................................... 31
Figure 16. MIPS-to-PCI address decoding ........................................................ 32
Figure 17. Usage of MIPS memory space by the 7811...................................... 33
Figure 18. EEPROM memory map.................................................................... 34
Figure 19. PCI configuration space ................................................................... 35
Figure 20. PCI Status Register.......................................................................... 35
Figure 21. Application-level GPDMA example................................................. 36
Figure 22. GPDMA operation in Message mode............................................... 37
Figure 23. GPDMA operation in Data mode ..................................................... 38
Figure 24. GPDMA Source command structure ................................................ 39
Figure 25. Bit fields in the Source Control word ............................................... 40
Figure 26. GPDMA Dest Command structure ................................................... 41
Figure 27. Bit fields in the Dest Control word................................................... 42
Figure 28. GPDMA example ............................................................................. 45
Figure 29. Security engine block diagram ......................................................... 48
Figure 30. Mapping between 16-bit and 32-bit representations of the Security
Engine’s commands and descriptors.......................................................... 50
Figure 31. Security Engine registers in the Group 0 register space ................... 51
Figure 32. Security Engine registers in the Group 1 register space ................... 51
Figure 33. Command descriptor ........................................................................ 52
Figure 34. Source descriptor.............................................................................. 53
Figure 35. Dest descriptor.................................................................................. 54
Figure 36. Result descriptor............................................................................... 55
Figure 37. Command structures......................................................................... 56
Figure 38. Base command structure................................................................... 57
Figure 39. Compress command structure .......................................................... 58
Figure 40. Pad command structure .................................................................... 60
Figure 41. Mac command structure ................................................................... 61
Figure 42. Encryption command structure......................................................... 62
Figure 43. Encryption Context structure............................................................ 63
Figure 44. Typical use of descriptors for a command that requires encryption
context ....................................................................................................... 63
________________________________________________________________
Page 4
DS-0018-00 DATA SHEET

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7811 전자부품, 판매, 대치품
1
1.1 Features
® 7811 Network Security Processor
Introduction
The Hi/fn® 7811 Security Processor performs network security functions in
hardware. Its pipelined architecture allows compression, encryption, and
authentication to be performed in a single pass. The 7811 hardware supports the
encryption, compression, and authentication algorithms, required for IPSec,
PPTP, L2TP, PPP, and others.
The 7811 is used in network servers, routers, and gateways. It accelerates the
security functions of virtual private networks, electronic commerce, and secure
Web sessions. The 7811’s PCI interface allows it to be implemented as an add-in
card or on the motherboard.
A 7811-based security subsystem includes a PCI interface, SDRAM memory,
and a dedicated microprocessor. Running Hi/fn’s security software, such a
subsystem handles network security protocols at the packet level, supporting the
Internet security protocol (IPSec) in both tunnel and transport modes. The PPP,
PPTP, and L2TP transmission protocols are supported in addition to TCP/IP.
Security Engine
Pipelined security engine performs encryption/decryption, compression/
decompression, and authentication
Supports major security protocols
Built-in DMA engines handle command and data streams
Supports 32K simultaneous IPSec sessions
Optional lock/unlock mode allows manufacturer-selected levels of exportability
Backward-compatible with the Hi/fn 7751
Local CPU Interface
Glueless CPU interface connects to a 32-bit MIPS microprocessor
Local CPU works with 7811 to boost performance and offload host CPU
Dedicated CPU allows sensitive operations to be isolated from the host
SDRAM Interfaces
General purpose SDRAM interface supports up to 64 MB and increases
performance and reduces PCI bus activity
Dedicated context memory interface supports up to 64 MB for session contexts
Memory can be made inaccessible to the host, enhancing security
PCI Interface
Bus-mastering 32-bit, 33 MHz PCI interface
True Random Number Generator
On-chip true-random number for public-key cryptography and IV generation
Security Barrier
Security barrier features protect security-relevant data items such as keys
Encryption hardware and memory can be made inaccessible from PCI
Supports FIPS 140-1, Level 3-compliant security subsystems
DATA SHEET DS-0018-00
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