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MDS108 PDF даташит

Спецификация MDS108 изготовлена ​​​​«Zarlink Semiconductor» и имеет функцию, называемую «Unmanaged 9-Port 10/100 Mbps Ethernet Switch».

Детали детали

Номер произв MDS108
Описание Unmanaged 9-Port 10/100 Mbps Ethernet Switch
Производители Zarlink Semiconductor
логотип Zarlink Semiconductor логотип 

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MDS108 Даташит, Описание, Даташиты
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MDS108
Unmanaged 9-Port 10/100 Mbps
Ethernet Switch
Data Sheet
Features
November 2003
• 8 10/100 Mbps auto-negotiating RMII ports
• 1 10/100 Mbps auto-negotiating MII/serial port
(port 8) that can be used as a WAN uplink or as a
9th port
Ordering Information
MDS108AL 208 Pin PQFP
• Operates stand-alone or can be cascaded with a
second MDS108 to reach 16 ports
-40°C to +85°C
- XLink expansion MII port (port 8)
- Input ports are defined to be high or low priority
- Operates at 100/200/300/400 Mbps
- Allows explicit identification of IP phone ports
• External I2C EEPROM for power-up configuration
• Supports both full and half duplex ports
- Default mode allows operation without external
EEPROM
• Ports 0 & 1 can be trunked to provide a 200 Mbps
link to another switch or server
• Up to 8 port-based VLANs
• Port 7 can be used to mirror traffic from the other 7
ports (0-6)
• Full wirespeed layer 2 switching on all ports (up to
2.679 M packets per second)
• Utilizes a single low-cost external pipelined,
SyncBurst SRAM (SBRAM) for buffer memory
• Internal 1 K MAC address table
- 256 KB or 512 KB (1 chip)
- Auto address learning
- Auto address aging
• Flow control capabilities
- Provides back-pressure for half duplex
DataShee
Leading-edge Quality of Service (QoS)
capabilities provided based on 802.1 p
andDIaPtaSheet4U.c- om802.3x
flow
control
for
full
duplex
TOS/DS field
• Supports external parallel port for configuration
- 2 queues per output port
updates
- Packet scheduling based on Weighted Round
Robin (WRR) and Weighted Random Early
Detection/Drop (WRED)
• Special power-saving mode for inactive ports
• Ability to support WinSock 2.0 and Windows2000
smart applications
- With flow control disabled, can drop packets
during congestion using WRED
- 2 levels of packet drop provided
• Provides port-based prioritization of packets on
up to 4 ports
• Transmit delay control capabilities
- Assures maximum delay (< 1 ms)
- Supports mixed voice/data networks
• Optimized pin-out for easy board layout
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Figure 1 - System Block Diagram
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of ZarDlinak tSaeSmhiceonedtu4cUtor.cInoc.m
Copyright 2003, Zarlink Semiconductor Inc. All Rights Reserved.









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MDS108 Даташит, Описание, Даташиты
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MDS108
Data Sheet
Description
The MDS108 is a fully integrated 9-port Ethernet switch designed to support the low-cost requirements of
unmanaged switch applications. The MDS108 provides features that are normally not associated with plug-and-
play technology, while not requiring an external processor to facilitate their utilization.
The MDS108 begins operating immediately at power-up, learning addresses automatically, and forwarding packets
at full wire-speed to any of its eight output ports or the XLink expansion port. The default configuration allows
operation without using an external EEPROM.
With an EEPROM to configure the device at power-up, the MDS108 provides flexible features: port trunking, port
mirroring, port-based VLANs and (QoS) capabilities that are usually associated only with managed switches.
The built-in intelligence capabilites of the MDS108 allows it to recognize and offer packet prioritization using Zarlink
Semiconductor’s QoS. Packets are prioritized based upon their layer 2 VLAN priority tag or the layer 3 Type-Of-
Service/ Differentiated Services (TOS/DS) field. This priority can be defined as transmit and/or drop priority.
The MDS108 can be used to create an 8-port unmanaged switch with one WAN router port by connecting a CPU
(ARM or MPC 850) to the additional MII port (port 8). The only external components needed are the physical layer
transceivers and a single SBRAM, resulting in a low, total system cost.
Designed to support the requirements of converging networks, the MDS108 utilizes a power conserving
architecture. To further enhance this power management, the chip automatically detects when a switch port is not
being utilized, and turns off the logic associated with that port, thereby saving power and reducing the current load
on the switch power supply.
et4U.com
Operating at 66 MHz internally, and with a 66 MHz interface to the external SBRAM, the MDS108 sustains full wire-
speed switching on all 9 ports.
DataShee
The chip is packaged in a small 208 pin PlasticDQautaadSFhleaet-tP4aUk.c(PoQmFP) package.
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MDS108 Даташит, Описание, Даташиты
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MDS108 Physical Pinout
MDS108
Data Sheet
et4U.com
L_A[7]
L_A[8]
VDD_CORE
L_A[9]
L_A[10]
L_A[11]
VSS
L_A[12]
L_A[13]
L_A[14]
VDD
NC
NC
NC
NC
NC
NC
VSS (CORE)
M0_TXEN
M0_TXD[0]
M0_TXD[1]
M0_CRS_DV
M0_RXD[0]
M0_RXD[1]
VDD
M1_TXEN
M1_TXD[0]
M1_TXD[1]
M1_CRS_DV
M1_RXD[0]
M1_RXD[1]
VSS
M2_TXEN
M2_TXD[0]
M2_TXD[1]
M2_CRS_DV
M2_RXD[0]
M2_RXD[1]
VDD (CORE)
M3_TXEN
M3_TXD[0]
M3_TXD[1]
M3_CRS_DV
M3_RXD[0]
M3_RXD[1]
VSS (CORE)
NC
NC
NC
NC
NC
NC
208 206 204 202 200 198 196 194 192 190 188 186 184 182 180 178 176 174 172 170 168 166 164 162 160 158 156
2+
4
Buffer Mem Interface
154
6 Pin 1 I.D.
152
150
8
148
10
146
12
144
14
142
16
140
18
138
20
136
22
134
24
132
26
130
28
128
30
126
32
124
34
36 DataSheet4U.com 122
120
38
118
40
116
42
114
44
112
46
110
48
108
50
RMII Port Interfaces
106
52
54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104
L_OE#
L_WE#
VSS
L_CLK
VDD
L_A[17]
L_A[2]
VSS
SCLK
VDD
MIR_CTL[3]
MIR_CTL[2]
MIR_CTL[1]
MIR_CTL[0]
RSTIN#
RSTOUT#
VSS (CORE)
T_MODE
TSTOUT[7]
TSTOUT[6]
TSTOUT[5]
TSTOUT[4]
TSTOUT[3]
TSTOUT[2]
TSTOUT[1]
TSTOUT[0]
VDD (CORE)
ACK
DATA0
STROBE
TRUNK_EN
TEST#
SDA
SCL
M_MDIO
VSS
M_MDC
VDD
M8_REFCLK
VSS
M8_SPEED
M8_DUPLEX
M8_LINK
M8_TXD[3]
M8_TXD[2]
M8_TXD[1]
M8_TXD[0]
M8_TXEN
VDD
M8_TXCLK
VSS (CORE)
M8_RXD[3]
DataShee
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Zarlink Semiconductor Inc.
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