參數(shù)資料
型號(hào)： CYNPC80192-BGC
廠商： CYPRESS SEMICONDUCTOR CORP
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Network Database Coprocessor
中文描述： SPECIALTY TELECOM CIRCUIT, PBGA388
封裝： BGA-388
文件頁(yè)數(shù)： 17/42頁(yè)
文件大?。?/td> 305K
代理商： CYNPC80192-BGC
CYNCP80192
Document #: 38-02043 Rev. *B
Page 17 of 42
SSRAM Address Prefix
. In the implementation with a SSRAM connected to the NSE (see
Figure 13-1
), these three bits are used
as an SSRAM address prefix (SAP) to generate the address of the associative SSRAM. (Refer to the data sheet specifications
of the CYNSE70XXX devices for further information.)
Start
. When the command and associated parameters have been written to the command descriptor, a process running on the
network processor can set this bit to initiate the operation by the CYNPC80192.
Search Size
. This two-bit field is used only by Search and Learn instructions and describes the word size for these operations.
Note
.
Learn command is not supported in the 272-bit wide table. The following describes the data that will be presented to the
NSE for various search sizes.
000: ×68 ({Data 0, layer attribute/valid bit for Data 0})
001: ×136 ({Data 1, layer attribute/valid bit for Data 1; Data 0, layer attribute/valid bit for Data 0})
010: ×272 ({Data 3, layer attribute/valid bit for Data 3; Data 2, layer attribute/valid bit for Data 2;
Data 1, layer attribute/valid bit for Data 1; Data 0, layer attribute/valid bit for Data 0}.
Note
. The two-bit search size must contain 00 for non-Search/Learn instructions.
Access Location
. This two-bit field is used by Read, Write, Move, and Swap instructions, and indicates the region accessed in
the NSEs or the associative data SSRAMs.
000: NSE data array.
001: NSE mask array.
010: SRAM connected to the NSE.
011: NSE internal registers.
Direct/Indirect
. This one-bit field is used by Read and Write instructions and controls the address generation to the NSEs and
the associated data SSRAMs. When this bit is set, it specifies indirect addressing using SSRs in the NSEs. (Refer to the
specifications of CYNSE70XXX for further information.)
Layer Attribute and Valid Bit for Data 0
. This field contains the three-bit layer attribute as well as a valid bit to accompany data
in the Data 0, in the context descriptor. The layer attributes bits may be used for maintaining multiple search tables (of different
widths) in the NSE(s). However, if multiple search tables are not used, these bits can be used for any purpose.
Layer Attribute and Valid Bit for Data 1
. This field contains a three-bit layer attribute as well as a valid bit to accompany data
in the Data 1, in the context descriptor. The layer attributes bits may be used for maintaining multiple search tables (of different
widths) in the NSE(s). However, if multiple search tables are not used, these bits can be used for any purpose.
Layer Attribute and Valid Bit for Data 2
. This field contains the three-bit layer attribute as well as a valid bit to accompany data
in the Data 2, in the context descriptor. The layer attributes bits may be used for maintaining multiple search tables (of different
widths) in the NSE(s). However, if multiple search tables are not used, these bits can be used for any purpose.
Layer Attribute and Valid Bit for Data 3
. This field contains the three-bit layer attribute as well as valid bit to accompany data
in the Data 3, in the context descriptor. The layer attributes bits may be used for maintaining multiple search tables (of different
widths) in the NSE(s). However, if multiple search tables are not used, these bits can be used for any purpose.
Commands
. NDC currently supports six basic commands. Command bits 7 through 3 are reserved and must be programmed
as 0s for the following commands:
000: Read
001: Write
010: Search
011: Learn
100: Move
101: Swap.
7.3.1
Read Command (00 H)
.
Table 7-4
shows the format for the Read command. The Read command’s structure is rd(ADR). The
Read command uses two 64-bit words in the context descriptor, command descriptor word, and Data 0 word. The Read command
is issued through the command descriptor. The Read access location, either data array, mask array, NSE register, or external
SSRAM is encoded in the command descriptor word. Bits 15–0 of the Data 0 word contain the Read address. Bits 23–19 of the
Data 0 word supply the NSE ID (SEID).
Command Description and Parameters
相關(guān)PDF資料
PDF描述
CYNSE70064A Search Engine
CYNSE70064A-50BGC Search Engine
CYNSE70064A-66BGC Search Engine
CYNSE70064A-83BGC Search Engine
CYP15G0101DXA Single Channel HOTLink II Transceiver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CYNSE10128 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Ayama⑩ 10000 Network Search Engine
CYNSE10128-083FGCI 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Ayama⑩ 10000 Network Search Engine
CYNSE10128-100FGC 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Ayama⑩ 10000 Network Search Engine
CYNSE10128-133FGC 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Ayama⑩ 10000 Network Search Engine
CYNSE10128A-100FGC 制造商:Cypress Semiconductor 功能描述:NETWORK SEARCH ENGINE 388PIN HFC-BGA - Bulk
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*