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 25 Track ID JATR-1076-21 Rev. 1.2
11.1.2. Receive
Rx Descriptor Format
Table 29. Rx Descriptor Format
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RSVD
D
M
A
F
F
O
V
F
S
P
L
C
P
R
S
V
D
RXRATE
(4 bits)
R
S
V
D
M
A
R
P
A
M
B
A
R
R
E
S
P
W
R
M
G
T
C
R
C
3
2
I
C
V
Frame_Length (12 bits)
Offset 0
RSVD (6 bits)
W
A
K
E
U
P
D
E
C
R
Y
P
T
E
D
AGC (8 bits)
A
N
T
E
N
N
A
RSSI
(7 bits)
SQ
(8 bits)
Offset 4
TSFTL Offset 8
TSFTH Offset 12
Table 30. Rx Status Descriptor
Offset# Bit# Symbol Description
0 31:28 RSVD Reserved.
0 27 DMAF RX DMA Fail.
When set, this packet will be dropped by software.
0 26 FOVF FIFO Overflow.
When set, this bit indicates that the receive FIFO was exhausted before this
packet was fully received.
0 25 SPLCP Short Physical Layer Convergence Protocol format.
When set, this bit indicates that a short PLCP preamble was added to the current
received frame.
0 24 RSVD Reserved.