TNETE2101

10BASE-T/100BASE-TX/100BASE-FX

LOW-POWER PHYSICAL-LAYER INTERFACE

SPWS032D – JANUARY 1997 – REVISED MARCH 1999

25

POST OFFICE BOX 655303

Table 11. Message-Code Field Values (Continued)

MESSAGE

CODE

BIT 10–0

MESSAGE CODE DESCRIPTION

OUI-tagged message. The OUI-tagged message consists of a single message code of 0000.0000.0101,

followed by four user codes defined in the following chart. The numbers indicate where each bit of the 24-bit

OUI should be stored in the 11-bit user code. Bits 8–0 of the third user code and the fourth (and final) user code

contain a user-defined user-code value that is specific to the OUI transmitted.

5

00000000101

Bit

10

User-Code Encoding of OUI

Bit

0

5

00000000101

1st

23

22

21

20

19

18

17

16

15

14

13

2nd

12

11

10

9

8

7

6

5

4

3

2

3rd

1

0

User-defined user code specific to OUI

4th

User-defined user code specific to OUI

PHY identifier tag code. The PHY ID tag code message consists of a single message code of 0000.0000.0110

followed by four user codes defined in the following chart. The numbers indicate where each bit of the 32-bit

PHY ID (stored in GEN_id_hi register 0x2:15–0 and GEN_id_lo register 0x3:15–0) should be stored in the

11-bit user code. Bit 0 of the third user code and the fourth (and final) user code contain a user-defined

user-code value that is specific to the PHY ID transmitted.

Bit

10

User-Code Encoding of PHY ID

Bit

0

6

00000000110

1st

0x2

15

0x2

14

0x2

13

0x2

12

0x2

11

0x2

10

0x2

9

0x2

8

0x2

7

0x2

6

0x2

5

2nd

0x2

4

0x2

3

0x2

2

0x2

1

0x2

0

0x3

15

0x3

14

0x3

13

0x3

12

0x3

11

0x3

10

3rd

0x3

9

0x3

8

0x3

7

0x3

6

0x3

5

0x3

4

0x3

3

0x3

2

0x3

1

0x3

0

UD

UC

4th

User-defined user code specific to PHY ID

2047

11111111111

Reserved for future autonegotiation use