DS33R11 Ethernet Mapper with Integrated T1/E1/J1 Transceiver

Register Name:

SU.MMCCTRL

 

 

 

 

 

 

 

Register Description:

MAC MMC Control Register

 

 

 

 

 

Register Address:

0100h (indirect)

 

 

 

 

 

 

 

0100h:

 

 

 

 

 

 

 

 

 

 

 

 

Bit #

31

30

 

29

 

28

 

27

26

25

24

 

Name

Reserved

Reserved

Reserved

 

Reserved

 

Reserved

Reserved

Reserved

Reserved

Default

0

0

 

0

 

0

 

0

0

0

0

 

0101h:

 

 

 

 

 

 

 

 

 

 

 

 

Bit #

23

22

 

21

 

20

 

19

18

17

16

 

Name

Reserved

Reserved

Reserved

 

Reserved

 

Reserved

Reserved

Reserved

Reserved

Default

0

0

 

0

 

0

 

0

0

0

0

 

0102h:

 

 

 

 

 

 

 

 

 

 

 

 

Bit #

15

14

 

13

 

12

 

11

10

09

08

 

Name

Reserved

Reserved

MXFRM10

 

MXFRM9

 

MXFRM8

MXFRM7

MXFRM6

MXFRM5

Default

0

0

 

1

 

0

 

1

1

1

1

 

0103h:

 

 

 

 

 

 

 

 

 

 

 

 

Bit #

07

06

 

05

 

04

 

03

02

01

00

 

Name

MXFRM4

MXFRM3

 

MXFRM2

 

MXFRM1

 

MXFRM0

Reserved

Reserved

Reserved

 

Default

0

1

 

1

 

1

 

0

0

1

0

 

Bits 3 - 13: Maximum Frame Size (MXFRM[0:10]) These bits indicate the maximum packet size value. All transmitted frames larger than this value are counted as long frames.

Bit 1: Reserved - Note that this bit must be written to a “1” for proper operation.

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Maxim DS33R11 specifications Su.Mmcctrl