參數資料
型號: MDS213CG
廠商: ZARLINK SEMICONDUCTOR INC
元件分類: 網絡接口
英文描述: 12-Port 10/100Mbps + 1Gbps 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
文件頁數: 46/120頁
文件大?。?/td> 1678K
代理商: MDS213CG
MDS213
Data Sheet
46
Zarlink Semiconductor Inc.
Figure 16 - An example of byte swapping
11.0 The LED Interface
11.1 LED interface
The MDS213 LED interface supports the status per port in a serial stream that may be daisy-chained to connect
two MDS213 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+2 in the MDS213, 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 17 - LED Interface Connections
To provide the port status information from our MDS213 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 - a continuous serial stream of data for all status LEDs which repeats 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
MDS213
Master
LE_SYNCO
LE_DO
MDS213
Slave
LE_SYNCI
LE_DI
LE_CLKO
LE_SYNCO
LE_DO
LED-
DECODER
LED-DISPLAY
相關PDF資料
PDF描述
MDS220 Analog IC
MDS221 Analog IC
MDS223 Analog IC
MDS35-800 DIODE / SCR MODULE
MDS35 DIODE / SCR MODULE
相關代理商/技術參數
參數描述
MDS217 制造商:未知廠家 制造商全稱:未知廠家 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
MDS21P-6BF-000 制造商:Amphenol Corporation 功能描述:MICRO D/36in WIRE 26AWG 7 STRD FLOT
MDS21S-6AA-000 制造商:Amphenol Corporation 功能描述:MICRO D/18in WIRE 26AWG 7 STRD THRU HOLE