Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X 数据表

Description

Reset

Type

Name

Bit/Field

Preamble Length for Transmit Frames

These bits control the number of preamble bytes that are added to the
beginning of every Transmit frame. The preamble reduction occurs only
when the MAC is operating in the full-duplex mode.

Description

Value

7 bytes of preamble

0x0

5 bytes of preamble

0x1

3 bytes of preamble

0x2

reserved

0x3

0x0

RW

PRELEN

1:0