參數(shù)資料
型號(hào)： VSC870TX
廠商： VITESSE SEMICONDUCTOR CORP
元件分類： 通用總線功能
英文描述： High Performance Serial Backplane Transceiver
中文描述： DUAL LINE TRANSCEIVER, PBGA192
封裝： BGA-192
文件頁(yè)數(shù)： 16/40頁(yè)
文件大?。?/td> 511K
代理商： VSC870TX
VITESSE
Data Sheet
VSC870
High Performance Serial
Backplane Transceiver
Page 16
G52190-0, Rev 4.1
01/05/01
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano
Camarillo, CA 93012
Tel: (800) VITESSE
FAX: (805) 987-5896
Email: prodinfo@vitesse.com
Internet: www.vitesse.com
Where:
B[1:0]00=Undefined,
01=Flow control channel,
10=Flow control channel,
11=Acknowledge
BRK1=This is the CRQ word for the next packet, 0=End of packet
M[0:15]Current outputs the transmit side is connected to
D[3:0] User defined data sent by transmitting port card
2.2.7 CRQ Word Format at the Transceiver RXOUT[31:0] Interface
This is the CRQ command word format on the parallel interface RXOUT[31:0] of the transceiver. The two
overhead bits are removed. This word arrives at the transceiver D words before the end of packet and also at the end
of packet. The BRK bit is used to designate the end of packet (see Application Note 31). The data bits D[3:0] can be
used by the transmitting port card to send information to the receiving port card such as port ID number.
Where:
BRK1=This is the CRQ word for the next packet, 0=End of packet
M[0:15]Current outputs the transmit side is connected to
D[3:0] User defined data sent by transmitting port card
2.3 Transmitter Operation
In Packet Mode, the transmitter is loaded with a connection request (CRQ) word followed by data words at the
parallel interface. The operation of the transceiver is such that a single CRQ word loaded into TXIN[31:0] may cause
the transceiver to send multiple CRQ words to the switch chip. When this happens, data may be blocked for several
word clocks until the switch grants the request. In order to improve bandwidth utilization, a system wide mode of
operation (called
‘
early arbitration
’
) can be used where the switch matrix reconfiguration time is delayed D word
clocks from the time arbitration results are determined. This allows the user logic to receive arbitration results just as
the first word of the next data packet is ready for transmission, thus improving bandwidth utilization.
The CRQ word has several control bits that are shown in the definitions above. Five of these bits control the
operation of the transceiver. The mode bits MD[1:0] determine the transceiver operating mode for a particular
connection request. The control bits CT[2:0] determine priority levels or time-out values depending on the mode of
operation. A summary of these operating modes is shown below. All of these modes will operate with early
arbitration as described in the next sections.
33 32
31 30 29 28 27 26 25
24
23 22 21 20
19 18 17 16
15 14 13 12
11 10 09 08
07 06 05 04
03 02 01 00
0 0
0 B B 1 0 1 0
1 0
B
R
M M M M
00 01 02 03
M M M M
04 05 06 07
M M M M
08 09 10 11
M M M M
12 13 14 15
D D D D
03 02 01 00
1 0 1 0
K
------ Active Connections ------
--Data--
31 30 29 28
27 26 25
24
23 22 21 20
19 18 17 16
15 14 13 12
11 10 09 08
07 06 05 04
03 02 01 00
0 0 0 0
0 0 0
B
R
M M M M
00 01 02 03
M M M M
04 05 06 07
M M M M
08 09 10 11
M M M M
12 13 14 15
D D D D
03 02 01 00
0 0 0 0
K
------ Active Connections ------
--Data--
相關(guān)PDF資料
PDF描述
VSC872 80 Gb/s Intelligent Switch Fabric
VSC874 10 Gbps Queue Manager with Integrated SPI4.2 Interface
VSC880 High Performance 16x16 Serial Crosspoint Switch
VSC9110 Target Specification
VSC9115 2.5 Gb/s Multi-Service SONET/SDH Mapper Device with Virtual Concatenation
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
VSC872 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:80 Gb/s Intelligent Switch Fabric
VSC872TV01 制造商:Vitesse Semiconductor Corporation 功能描述:
VSC874 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:10 Gbps Queue Manager with Integrated SPI4.2 Interface
VSC880 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:High Performance 16x16 Serial Crosspoint Switch
VSC880TY 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:High Performance 16x16 Serial Crosspoint Switch
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

*
*
*