參數(shù)資料
型號(hào)： MVTX2802AG
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 網(wǎng)絡(luò)接口
英文描述： Managed 4-Port 1000 Mbps Ethernet Switch
中文描述： DATACOM, LAN SWITCHING CIRCUIT, PBGA596
封裝： 40 X 40 MM, 2.33 MM HEIGHT, MS-034, HSBGA-596
文件頁數(shù)： 34/154頁
文件大?。?/td> 1936K
代理商： MVTX2802AG
MVTX2802
Data Sheet
34
Zarlink Semiconductor Inc.
For some LED signals, the interface also provides a blinking option. Blinking may be enabled for LED signals
TxD, RxD, COL, and FC (to be described later). The pin LED_BLINK is used to enable blinking, and the blinking
frequency is around 160 ms.
9.2 Serial Mode
In serial mode, the following pins are utilized:
LED_SYNCO – a sync pulse that defines the boundary between status frames
LED_CLKO – the clock signal
LED_DO – a continuous serial stream of data for all status LEDs that repeats once every frame time
In each cycle (one frame of status information, or one sync pulse), 16
×
8 bits of data are transmitted on the LED_DO
signal. The sequence of transmission of data bits is as shown in the figure below:
Figure 6 - Timing diagram for serial mode in LED interface
The status bits shown in here are flow control (FC), transmitting data (TxD), receiving data (RxD), link up (LNK),
speed (SP0 and SP1), full duplex (FDX), and collision (COL). Note that SP[1:0] is defined as 10 for 1 Gbps, 01
for 100 Mbps, and 00 for 10 Mbps.
Also note that U0-U7 represent user-defined sub-frames in which additional status information may be
embedded. We will see later that the MVTX2802AG provides registers that can be written by the CPU to
indicate this additional status information as it becomes available.
9.3 Parallel Mode
In parallel mode, the following pins are utilized:
LED_PORT_SEL[9:0] – indicates which of the 4 Gigabit port status bytes or 2 user-defined status bytes is
being read out
LED_BYTEOUT_[7:0] – provides 8 bits for 8 different port status indicators. Note that these bits are active
low.
By default, the system is in parallel mode. In parallel mode, the 10 status bytes are scanned in a continuous
loop, with one byte read out per clock cycle, and the appropriate port select bit asserted.
9.4 LED Control Registers
An LED Control Register can be used for programming the LED clock rate, sample hold time, and pattern in
parallel mode.
In addition, the MVTX2802AG provides 8 registers called LEDUSER[7:0] for user-defined status bytes. During
operation, the CPU can write values to these registers, which will be read out to the LED interface output (serial
P0
info
P1
info
P2
info
P3
info
P4
info
P5
info
P6
info
P7
info
U0
U1
U2
U3
U4
U5
U6
U7
LE_SYNCO
LE_DO
LE_CLKO
FC
TxD
RxD
LNK
SP0
SP1
FDX
COL
0
7
6
5
4
3
2
1
相關(guān)PDF資料
PDF描述
MVTX2803 Unmanaged 8-Port 1000 Mbps Ethernet Switch
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MVTX2804AG 8-Port 1000 Mbps Ethernet Distributed Switch
MVV200 Analog IC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MVTX2803 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Unmanaged 8-Port 1000 Mbps Ethernet Switch
MVTX2803A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Unmanaged 8 port Gigabit Ethernet switch
MVTX2803AG 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Unmanaged 8-Port 1000 Mbps Ethernet Switch
MVTX2803AG2 制造商:Microsemi Corporation 功能描述:
MVTX2804 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:8-Port 1000 Mbps Ethernet Distributed Switch
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