8101 datasheet(116/172 Pages) LSI

116 / 172 page

4-28

Registers

RWM2[7:0]

Receive FIFO Increment = 16 Words (64 Bytes)

Watermark 2 Threshold

[7:0], R/W

4.3.16 Register 19–Flow Control 1

Note:

MCNTRL 15-bit occurs on REGD15 pin

MCNTRL

MAC Control Frame Enable

15, R/W

MCPASS[1:0]

MAC Control Frame Pass Through

Enable

[14:13], R/W

RWM2[7:0]

Description

Range

−4096 words (0−16386 bytes)

11111111

Reserved, do not use

11111110

4080 words in FIFO (16320 bytes)

11111110

4064 words in FIFO (16256 bytes)

00000001

32 words in FIFO (128 bytes)

00000000

16 words in FIFO (64 bytes)

MCNTRL

MCPASS[1:0]

MCFLTR

MCENDPS

MCASND[3:0]

RES = 0

MCNTRL

Description

Valid receive MAC control frames cause the

transmitter to pause (ﬂow control enabled)

Transmitter not paused (ﬂow control disable)

MCPASS[1:0] Description

Valid MAC control frame that have pause

opcode are passed through to receive FIFO

Valid MAC control frames that have any opcode

are passed through to receive FIFO

Valid MAC control frames that have nonpause

opcode are passed through to receive FIFO

MAC control frames are not passed through to

receive FIFO

8101 Datasheet(PDF) 116 Page - LSI Computer Systems

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