參數(shù)資料
型號: MVTX2604
廠商: Zarlink Semiconductor Inc.
英文描述: Managed 24-Port 10/100 Mb + 2 Port 1 Gb Ethernet Switch
中文描述: 管理24端口的10/100 Mb 2端口千兆以太網(wǎng)交換機(jī)1
文件頁數(shù): 46/173頁
文件大?。?/td> 2097K
代理商: MVTX2604
MVTX2604
Data Sheet
48
Zarlink Semiconductor Inc.
11.2SCAN LINK and SCAN COL interface
An external CPLD logic is required to take the link signals and collision signals from the GPSI PHYs and shift them
into the switch device. The switch device will drive out a signature to indicate the start of the sequence. After that,
the CPLD should shift in the link and collision status of the PHYS as shown in the figure. The extra link status
indicates the polarity of the link signal. One indicates the polarity of the link signal is active high.
Figure 14 - SCAN LINK and SCAN COLLISON Status Diagram
12.0 LED Interface
12.1 LED Interface Introduction
A serial output channel provides port status information from the MVTX2604 chips. It requires three additional pins.
LED_CLK at 12.5 MHz
LED_SYN a sync pulse that defines the boundary between status frames
LED_DATA a continuous serial stream of data for all status LEDs that repeats once every frame time
A non-serial interface is also allowed, but in this case, only the Gigabit ports will have status LEDs.
A low cost external device (44 pin PAL) is used
to decode the serial data and to drive an LED array for display. This
device can be customized for different needs.
12.2 Port Status
In the VTX2604, each port has 8 status indicators, each represented by a single bit. The 8 LED status indicators
are:
Bit 0: Flow control
Bit 1:Transmit data
Bit 2: Receive data
Bit 3: Activity (where activity includes either transmission or reception of data)
Bit 4: Link up
Bit 5: Speed (1= 100 Mb/s; 0= 10 Mb/s)
Bit 6: Full-duplex
Bit 7: Collision
scan_clk
scan_link/
scan_col
Drived by VTX260x
Drived by CPLD
25 cycles for link/
24 cycles for col
Total 32 cycles period
Drived by MVTX260x
Drived by CPLD
Total 32 cycles period
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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MVTX2801A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Unmanaged 4 port Gigabit Ethernet switch
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