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 7 Track ID JATR-1076-21 Rev. 1.2
Symbol Type Pin No Description
GPIO4 O 100 General purpose input/output pin.
GPIO5 O 94 General purpose input/output pin.
VREFO X 118 Not used in the RTL8225 RF chipset.
VRP X 119 Not used in the RTL8225 RF chipset.
VRN X 120 Not used in the RTL8225 RF chipset.
RXIP
RXIN
I
I
121
122
Receive (Rx) In-phase Analog Data.
RXQP
RXQN
I
I
124
125
Receive (Rx) Quadrature-phase Analog Data.
RXAGC I 4 Not used in the RTL8225 RF chipset.
TXAGC O 5 Not used in the RTL8225 RF chipset.
RSSI I 6 Analog Input to the Receive Power A/D Converter for Receive AGC Control.
TSSI0
I 7 Input to the Transmit Power A/D Converter for 2.4GHz Transmit AGC Control.
TSSI1
I 8 Not used in the RTL8225 RF chipset.
TXQP
TXQN
I
I
11
12
Not used in the RTL8225 RF chipset.
TXIP
TXIN
O
O
14
13
Not used in the RTL8225 RF chipset.
TXQTP
TXQTN
O
O
15
16
Transmit (TX) Quadrature-phase Analog Data.
TXITP
TXITN
O
O
17
18
Transmit (TX) In-phase Analog Data.
6.5.2. RTL8255 RF Chipset
Table 6. RTL8255 RF Chipset
Symbol Type Pin No Description
RIFSCK O 57 Serial Clock Output.
For the RTL8255 RF chipset, all operation mode switching and register setting is
done via a 3-wire serial interface.
RIFSD O 61 Serial Data Input/Output.
RFLE O 58 Serial Enable control.
CALEN X 77 Not used in the RTL8255 RF chipset.
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 RTL8255 RF chipset.
LNAHL O 88 Not used in the RTL8255 RF chipset.
ANTSEL
ANTSELB
O
O
87
95
Antenna Select.
The antenna detects signal change states as the receiver switches from antenna to
antenna during the acquisition process in antenna diversity mode.
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 Not used in the RTL8255 RF chipset.
APAPE O 85 2.4GHz Transmit Power Amplifier Power Enable.
BPAPE O 107 5GHz Transmit Power Amplifier Power Enable.