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參數(shù)資料
| 型號： | VSC7122 |
| 廠商： | Vitesse Semiconductor Corporation. |
| 英文描述： | Rotary Switch; No. of Switch Positions:2; Circuitry:3PDT; Contact Current Max:1.5A; Indexing:30 ; Contact Rating:1.5A at 28VDC; Mounting Type:Panel; Number of Positions:2; Switch Features:30 degrees Indexing; Switch Function:3PDT |
| 中文描述： | 四端口旁路電路1.0625 Gbit / sec光纖通道仲裁環(huán)路磁盤陣列 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 93K |
| 代理商： | VSC7122 |
VITESSE
Advance Product Information
VSC7122
Quad Port Bypass Circuit for 1.0625 Gbit/sec
Fibre Channel Arbitrated Loop Disk Arrays
Page 2
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 805/388-3700 FAX: 805/987-5896
8/31/98
G52155-0, Rev. 2.1
The VSC7122 can be cascaded through the IN and OUT pins for arrays of disk drives greater than 4. For
disk arrays with a noninteger multiple of 4 disk drives, the unused PBC’s can be hardwired to bypass with a
external pulldown resistor.
Table 1 is a truth table detailing the data flow through the VSC7122. Figure 1 shows a timing diagram of the
data relationship in the VSC7122. There are no critical timing (setup, hold, or delay) parameters for the
VSC7122 as this part routes the serial data encoded with the baud clock that is extracted by a Fibre Channel
receiver. The primary AC parameter of importance is the jitter or data eye degradation inserted by the port
bypass circuit. The design of the VSC7122 minimizes jitter accummulation by using fully differential circuits.
This provides for symmetric rise and fall delays as well as noise rejection.
Table 1: Truth Table
Figure 1: Timing Waveforms
SELECT STATE
DATA OUTPUTS
SEL1
SEL2
SEL3
SEL4
OUT
SO4
SO3
SO2
SO1
L
L
L
L
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
L
L
L
H
SI4
IN
IN
IN
L
L
H
L
SI3
SI3
IN
IN
L
H
L
L
SI2
SI2
SI2
IN
H
L
L
L
SI1
SI1
SI1
SI1
H
H
H
H
SI4
SI3
SI2
SI1
T
1
T
2
T
jitter
OUT+/-
LSO1+/-
LSO2+/-
LSO3+/-
LSO4+/-
IN+/-
LSI1+/-
LSI2+/-
LSI3+/-
LSI4+/-
相關PDF資料 |
PDF描述 |
|---|---|
| VSC7123QN | 10-Bit Transceiver for Fibre Channel and Gigabit Ethernet |
| VSC7123 | Rotary Switch; No. of Switch Positions:10; Circuitry:SPDT; Contact Current Max:1.5A; Indexing:30 ; Contact Rating:1.5A at 28VDC; Mounting Type:Panel; Number of Positions:10; Switch Features:30 degrees Indexing; Switch Function:SPDT |
| VSC7123RD | 10-Bit Transceiver for Fibre Channel and Gigabit Ethernet |
| VSC7123QU | Development kit; Kit Contents:Evaluation Board; For Use With:CS4955A; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No RoHS Compliant: No |
| VSC7124 | Rotary Switch; No. of Switch Positions:4; Circuitry:DPDT; Contact Current Max:1.5A; Indexing:30 ; Contact Rating:1.5A at 28VDC; Mounting Type:Panel; Number of Positions:4; Switch Features:30 degrees Indexing; Switch Function:DPDT |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| VSC7122QM | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:Quad Port Bypass Circuit for 1.0625 Gbit/sec Fibre Channel Arbitrated Loop Disk Arrays |
| VSC7123 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:10-Bit Transceiver for Fibre Channel and Gigabit Ethernet |
| VSC7123QN | 制造商:VITE 功能描述: |
| VSC7123QN/C | 制造商:Vitesse Semiconductor Corporation 功能描述: |
| VSC7123QU | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:10-Bit Transceiver for Fibre Channel and Gigabit Ethernet |
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