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| 型号： | GT-48001A |
| 厂商： | Galileo Technology Services, LLC |
| 英文描述： | Switched Ethernet Controller For 10BaseX(10BaseX交换式快速以太网控制器) |
| 中文描述： | 交换式以太网控制器10BaseX（10BaseX交换式快速以太网控制器） |
| 文件页数： | 64/101页 |
| 文件大小： | 1235K |
| 代理商： | GT-48001A |
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GT-48001A Switched Ethernet Controller
Revision 1.6
65
Figure 17: Primary Status LED Timing (Link Test Fails)
Partition, Status LED blinks twice * Primary status bit is activated twice every 5 seconds for 420 ms each time, with a
period of 1.26 seconds between two consecutive activations.
Figure 18: Primary Status LED Timing (Port Partitioned)
16.3.1.3 Primary Port Status LED (Mode 1): (LEDMode input is HIGH)
In this mode, the Port Status LED initially displays the port link status information (indication type a) and then switches
to reflect the port traffic (Transmit or Receive) activity (indication type b). The switching between the two types of indi-
cations is as follows:
Indication type a:
The Port Status LED indicates the port link status for a period of about 3 to 3.5 seconds (active - link test passes, inactive
- link test fails) following any of the events below:
1) Rst* deassertion
2) transition between link test fail to link test pass
Following this time period, the Port Status LED will switch to indication type b. In the case that the link test fails, the
Port Status LED will remain inactive and will not switch to indication type b.
Indication type b:
The Port Status LED indicates the port traffic (Transmit or Receive) activity which is a logical OR of the transmit and
receive dynamic signals. The "monostable" function is applied to this indication type so the LED can be viewed for a
period of about 200 ms per each traffic activity. The Port Status LED will switch to indication type a on the following cas-
es:
1) Rst* assertion
2) transition from link test pass to link test fail
420ms
5s
Link Intergity Test Fails: Primary Status LED Blinks 420ms every 5sec
420ms
5s
Port Partitioned: Primary Status LED Twice for 420ms every 5sec
420ms
1.26 sec
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