參數(shù)資料
型號(hào)： MDS212CG
廠(chǎng)商： ZARLINK SEMICONDUCTOR INC
元件分類(lèi)： 網(wǎng)絡(luò)接口
英文描述： 12-Port 10/100Mbps Ethernet Switch
中文描述： DATACOM, LAN SWITCHING CIRCUIT, PBGA456
封裝： 35 X 35 MM, 2.33 MM HEIGHT, MS-034, HSBGA-456
文件頁(yè)數(shù)： 44/111頁(yè)
文件大?。?/td> 1609K
代理商： MDS212CG
MDS212
Data Sheet
44
Zarlink Semiconductor Inc.
Figure 14 - An example of byte swapping
11.0 The LED Interface
11.1 LED Interface
The MDS212 LED interface supports the status per port in a serial stream that may be daisy-chained to connect
two MDS212 chips. Daisy-chaining greatly reduces the pin count and number of board traces routed from the
Physical Layer to the LEDs, thus simplifying system design and reducing overall system cost. For a large port
configuration such as the 24 in the MDS212, a large number of LED signals is needed, which may induce noise and
layout issues in the system. The LED information is transmitted in a frame-structured format with a synchronization
pulse at the start of each frame.
Figure 15 - LED Interface Connections
To provide the port status information from our MDS212 chips via a serial output channel, five additional
pins are required.
LE_CLKO - at 12.5 MHz
LE_SYNCI/O - a sync pulse -- defines the boundary between frames
LE_DI/O - acontinuous serial stream of data for all status LEDs which repeat once every frame time
A low cost external device (i.e. a 44-pin FPGA-like device) decodes the LED framed data and drives the LED array
for display. This device may be customized for different system configurations.
Byte 0
Byte 1
Byte 2
Byte 3
CPU Bus
Internal Data Bus
31
24 23
16 15
8 7
0
Byte 3
Byte 2
Byte 1
Byte 0
31
24 23
1615
8 7
0
MDS212
Master
LE_SYNCO
LE_DO
MDS212
Slave
LED
Decoder
LED Display
LE_CLKO
LE_SYNCO
LE_DO
LE_DI
LE_SYNCI
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MDS213 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:12-Port 10/100Mbps + 1Gbps Ethernet Switch
MDS213CG 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:12-Port 10/100Mbps + 1Gbps Ethernet Switch
MDS217 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Analog IC
MDS-21E09 制造商:ITT Interconnect Solutions 功能描述:BACKSHELL - Bulk
MDS21P-6AA-000 制造商:Amphenol Corporation 功能描述:MICRO D/18in WIRE 26AWG 7 STRD THRU HOLE
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