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 6 Track ID JATR-1076-21 Rev. 1.2
6.4.
LED Interface
Table 4. LED Interface
Symbol Type Pin No Description
LED0, 1 O 48, 56 LED Pins (Active low)
LEDS1~0 00 01 10 11
LED0 TX/RX TX/RX TX LINK/ACT
LED1 Infrastructure LINK RX Infrastructure
During power down mode, the LED signals are logic high.
6.5.
Attachment Unit Interface
6.5.1. RTL8225 RF Chipset
Table 5. Attachment Unit Interface
Symbol Type Pin No Description
RIFSCK O 57 Serial Clock Output.
For the RTL8225 RF chipset, all operation mode switching and register setting is
done via a 4-wire serial interface.
RIFSD I/O 61 Serial Data Input/Output.
RFLE O 58 Serial Enable control.
CALEN O 77 Serial Read/Write control.
CALMODE O 108 Receiver Output.
I and Q channel AC coupling high-pass corner frequency selection. The output
function of this pin is not used in the RTL8225 RF chipset.
LNA_HL O 88 Not used in the RTL8225 RF chipset.
ANTSEL O 87 Antenna Select.
The antenna detects signal change states as the receiver switches from antenna to
antenna during the acquisition process in antenna diversity mode. This is a
complement for ANTSELB for differential drive of antenna switches.
ANTSELB O 95 Antenna Select B.
The antenna detects signal change states as the receiver switches from antenna to
antenna during the acquisition process in the antenna diversity mode. This is a
complement for ANTSEL for differential drive of antenna switches.
TRSW
TRSWB
O
O
104
103
Transmit/Receive path select.
The TRSW select signal controls the direction of the Transmit/Receive switch.
VCOPDN O 49 Output Pin as shutdown mode select digital input.
A_PAPE O 85 2.4GHz Transmit Power Amplifier Power Enable.
B_PAPE O 107 Not used in the RTL8225 RF chipset.
RFTXEN O 102 Not used in the RTL8225 RF chipset.
RFRXEN O 113 Not used in the RTL8225 RF chipset.
GPIO0 O 67 General purpose input/output pin.
GPIO1 O 68 General purpose input/output pin.
GPIO2 O 69 General purpose input/output pin.
GPIO3 O 70 General purpose input/output pin.