User's Manual
Table Of Contents
- General Description
- Features
- System Applications
- Block Diagram
- Pin Assignments
- Pin Descriptions
- CPU Access to Endpoint Data
- USB Request
- Get Descriptor-Device
- Get Descriptor-Device Qualifier (High Speed)
- Get Descriptor-Configuration
- Get Descriptor-String Index 0
- Get Descriptor-String Index 1
- Get Descriptor-String Index 2
- Get Descriptor-String Index 3
- Get Descriptor-String Index 4
- Get Descriptor-String Index 5
- Get Descriptor-Other Speed Configuration
- Set Address
- Set Interface 0
- Set Feature Device
- Clear Feature Device
- Set Config 0
- Set Config 1
- EEPROM (93C46 or 93C56) Contents
- USB Packet Buffering
- Functional Description
- Application Diagram
- Electrical Characteristics
- Mechanical Dimensions
- Ordering Information
RTL8187L
Datasheet
Wireless LAN Network Interface Controller 28 Track ID JATR-1076-21 Rev. 1.2
11.5.
LED Functions
The RTL8187L supports 2 LED signals in 4 configurable operation modes. The following sections describe
the different LED actions.
11.5.1. Link Monitor
The Link Monitor senses the link integrity. Whenever link status is established, the specific link LED pin is
driven low.
11.5.2. Infrastructure Monitor
The Infrastructure Monitor senses the link integrity of an Infrastructure network. Whenever Link OK in
Infrastructure network status is established, the specific Infrastructure LED pin is driven low.
11.5.3. Rx LED
Blinking of the Rx LED indicates that receive activity is occurring.
Power On
Receiving
Packet?
LED = High
LED = High for (100 +- 10) ms
LED = Low for (12 +- 2) ms
No
Yes
Figure 3. Rx LED