参数资料
型号: GT-48002A
厂商: Galileo Technology Services, LLC
英文描述: Switched Fast Ethernet Controller for 100BaseX(100BaseX交换式快速以太网控制器)
中文描述: 交换式快速以太网控制器(100BaseX交换式快速以太网控制器的100BaseX)
文件页数: 71/102页
文件大小: 1001K
代理商: GT-48002A
GT-48002A Switched Fast Ethernet Controller
70
Revision 1.2
17.5
Parallel LED Interface Description
The Parallel LED Interface consists of the six MACLED output pins per port.
MAC0LED[0], MAC1LED[0] : Port Status LED
MAC0LED[1], MAC1LED[1] : Transmit data in progress (TxEn)
MAC0LED[2], MAC1LED[2] : Receive data in progress (RxDV)
MAC0LED[3], MAC1LED[3] : Collision active (Col)
MAC0LED[4], MAC1LED[4] : Full/Half Duplex
MAC0LED[5], MAC1LED[5] : Receive Buffer Full
The MAC0LED and MAC1LED outputs are active LOW. An external buffer should be added for each driven LED. The
MAC0LED and MAC1LED outputs reflect the same data (value and timing) which is accessible via the Serial Interface.
The Parallel Interface includes the same "monostable" function on the Dynamic Internal Signals as the Serial Interface.
The “monostable" function timing is selected via the LEDMode input.
Figure 18: Parallel LED Interface Timings
T ms
MACxLED
where: T = ~62 ms for LEDMode input = 0
T = ~7.5 ms for LEDMode input = 1
dynamic signals
static signals
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