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參數(shù)資料
| 型號： | MDS108A |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | Unmanaged 9-Port 10/100 Mbps Ethernet Switch |
| 中文描述： | 非托管9端口10/100 Mbps以太網(wǎng)交換機 |
| 文件頁數(shù)： | 13/37頁 |
| 文件大?。?/td> | 308K |
| 代理商： | MDS108A |
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MDS108
Data Sheet
13
Zarlink Semiconductor Inc.
9.0 XLink Cascade Port
Port 8 on the MDS108 is the XLink port. The XLink port provides a means of packet communication between two
MDS108 chips. When cascaded via the XLink port, two MDS108 devices are capable of providing up to sixteen
10/100 Mbps ports.
The XLink port utilizes an industry standard MII interface. This expansion port is capable of operating at several
data rates, depending upon configuration. Multiple data rates are achieved by multiplying the MII reference clock for
the XLink interface (M8_REFCLK). When operating at greater than 200 Mbps, the MDS108 must utilize a higher
frequency system clock in order to be able to support the greater switching bandwidth requirements. With a 66 MHz
system clock the MDS108 can support full wire-speed forwarding on all 8 ports, and full wire speed on the XLink
port for expansion port data rates of 200 Mbps and 100 Mbps. With a 80 MHz system clock, the MDS108 can
support full wire-speed operation on all 8 ports and the XLink at data rates up to 400 Mbps.
The XLink frequency of operation is determined by strap options during power-up. The frame buffer memory
address pins L_A[10:9] provide the frequency of operation selection as shown in the table.
When two MDS108 devices are cascaded to form a 16 port switch, the XLink port on each MDS108 is treated as if
it were a standard switch output. Standard Ethernet packet protocols are utilized, traditional packet integrity checks
are performed at the receiving MDS108 XLink port, and standard length Ethernet packets are transmitted.
Refer to the XLink Application Note (MSAN-216).
10.0 EEPROM I
2
C Interface
A simple 2 wire serial interface is provided to allow the configuration of the MDS108 from an external EEPROM.
The MDS108 utilizes a 1 K bit EEPROM with an I
2
C interface.
Xlink Data Rate
L_A[10:9] Strap Level
100 Mbps
11
200 Mbps
10
300 Mbps
01
400 Mbps
00
Table 3 - XLink Port Strap Options
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相關代理商/技術參數(shù) |
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|---|---|
| MDS108AL | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Unmanaged 9-Port 10/100 Mbps Ethernet Switch |
| MDS10-IDW | 制造商:Leviton Manufacturing Co 功能描述: |
| MDS1100 | 制造商:Microsemi Corporation 功能描述:MDS1100 - Bulk 制造商:Microsemi Corporation 功能描述:RF POWER TRANSISTOR BIPOLAR/HBT |
| MDS-113 | 制造商:Power Dynamics Inc 功能描述: |
| MDS12 | 制造商:M.E.C. Relays 功能描述: 制造商:TE Connectivity 功能描述: |
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