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LXD9785 PQFP Demo Board with FPGA for SS-SMII (Fiber)-to-MII Conversion
18 Development Kit Manual
Document #: 249323
Revision #: 003
Rev. Date: January 24, 2002
5.2 Inter Frame Status LEDs
By using the conversion FPGAs, the Inter Frame Status information for Speed status, Duplex
status, and Link status are output to an LED circuit. The LEDs (D101 - D154) provide a
continuous, real-time status for all eight ports. This feature is provided to assist the customer in
evaluation of the Inter Frame Status operation.
Table 9. LED Pulse Stretch Settings (Register 20)
Bit Name Description Type Default
20.3:2 LEDFREQ
00 = Stretch LED events to 30 ms.
01 = Stretch LED events to 60 ms.
10 = Stretch LED events to 100 ms.
11 = Reserved.
R/W 00
20.1
PULSE-
STRETCH
0 = Disable pulse stretching of all LEDs.
1 = Enable pulse stretching of all LEDs.
R/W 1