User's Manual

RTL8187L
Datasheet
Wireless LAN Network Interface Controller 24 Track ID JATR-1076-21 Rev. 1.2
Offset# Bit# Symbol Description
0 17 MOREFRAG More Fragment.
This bit is set to 1 in all data type frames that have another fragment of the current
packet to follow.
0 16 SPLCP Short Physical Layer Convergence Protocol format.
When set, this bit indicates that a short PLCP preamble will be added to the
header before transmitting the frame.
0 15 NO_ENCRYPT No Encryption.
This packet will be sent out without encryption even if Tx encryption is enabled.
0 14:12 RSVD Reserved.
0 11:0 TPKTSIZE Transmit Packet Size.
This field indicates the number of bytes required to transmit the frame.
4 31 LENGEXT Length Extension.
This bit is used to supplement the Length field (bits 30:16, offset 4). This bit will
be ignored if the TXRATE is set to 1Mbps, 2Mbps, or 5.5Mbps.
4 30:16 Length PLCP Length.
The PLCP length field indicates the number of microseconds required to transmit
the frame.
4 15:0 RTSDUR RTS Duration.
These bits indicate the RTS frame’s duration field before transmitting the current
frame and will be ignored if the RTSEN bit is set to 0.
8 31:28 RATE_FALL
BACK_LIMIT
Data Rate Auto Fallback Limit.
8 27:25 RSVD Reserved.
8 24 ANTENNA Tx Antenna.
8 23:16 AGC Tx AGC.
8 15:8 RETRY_LIMIT Retry Count Limit.
8 7:4 CWMAX Maximum Contention Window.
8 3:0 CWMIN Minimum Contention Window.