Maxim DS33Z41 Ethernet Interface Registers, Ethernet Interface Register Bit Descriptions

Models: DS33Z41

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DS33Z41 Quad IMUX Ethernet Mapper

9.6Ethernet Interface Registers

The Ethernet Interface registers are used to configure RMII/MII bus operation and establish the MAC parameters as required by the user. The MAC Registers cannot be addressed directly from the Processor port. The registers below are used to perform indirect read or write operations to the MAC registers. The MAC Status Registers are shown in Table 9-7. Accessing the MAC Registers is described in the Section 8.14.

9.6.1Ethernet Interface Register Bit Descriptions

Register Name:

SU.MACRADL

 

 

 

 

 

Register Description:

MAC Read Address Low Register

 

 

 

Register Address:

140h

 

 

 

 

 

Bit #

7

6

5

4

3

2

1

0

Name

MACRA7

MACRA6

MACRA5

MACRA4

MACRA3

MACRA2

MACRA1

MACRA0

Default

0

0

0

0

0

0

0

0

Bits 7 to 0: MAC Read Address (MACRA7 to MACRA0). Low byte of the MAC address. Used only for read operations.

Register Name:

SU.MACRADH

 

 

 

 

 

Register Description:

MAC Read Address High Register

 

 

 

Register Address:

141h

 

 

 

 

 

Bit #

7

6

5

4

3

2

1

0

Name

MACRA15

MACRA14

MACRA13

MACRA12

MACRA11

MACRA10

MACRA9

MACRA8

Default

0

0

0

0

0

0

0

0

Bits 7 to 0: MAC Read Address (MACRA15 to MACRA8). High byte of the MAC address. Used only for read operations.

Register Name:

SU.MACRD0

 

 

 

 

 

Register Description:

MAC Read Data Byte 0

 

 

 

 

Register Address:

142h

 

 

 

 

 

Bit #

7

6

5

4

3

2

1

0

Name

MACRD7

MACRD6

MACRD5

MACRD4

MACRD3

MACRD2

MACRD1

MACRD0

Default

0

0

0

0

0

0

0

0

Bits 7 to 0: MAC Read Data Byte 0 (MACRD7 to MACRD0). One of four bytes of data read from the MAC. Valid after a read command has been issued and the SU.MACRWC.MCS bit is zero.

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Maxim DS33Z41 Ethernet Interface Registers, Ethernet Interface Register Bit Descriptions, Su.Macradl, Su.Macradh