Output (MDIO) Module User's Guide

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4 MDIO Registers

4.1 MDIO Version Register (VERSION)

MDIO Registers

Table 24 lists the memory-mapped registers for the MDIO module. See the device-specific data manual

for the memory address of these registers.

Table 24. Management Data Input/Output (MDIO) Registers

Offset Acronym Register Description Section

0h VERSION MDIO Version Register Section 4.1

4h CONTROL MDIO Control Register Section 4.2

8h ALIVE PHY Alive Status register Section 4.3

Ch LINK PHY Link Status Register Section 4.4

10h LINKINTRAW MDIO Link Status Change Interrupt (Unmasked) Register Section 4.5

14h LINKINTMASKED MDIO Link Status Change Interrupt (Masked) Register Section 4.6

20h USERINTRAW MDIO User Command Complete Interrupt (Unmasked) Register Section 4.7

24h USERINTMASKED MDIO User Command Complete Interrupt (Masked) Register Section 4.8

28h USERINTMASKSET MDIO User Command Complete Interrupt Mask Set Register Section 4.9

2Ch USERINTMASKCLEAR MDIO User Command Complete Interrupt Mask Clear Register Section 4.10

80h USERACCESS0 MDIO User Access Register 0 Section 4.11

84h USERPHYSEL0 MDIO User PHY Select Register 0 Section 4.12

88h USERACCESS1 MDIO User Access Register 1 Section 4.13

8Ch USERPHYSEL1 MDIO User PHY Select Register 1 Section 4.14

The MDIO version register (VERSION) is shown in Figure 27 and described in Table 25 .

Figure 27. MDIO Version Register (VERSION)

31 16

MODID

R-7h

15 8 7 0

REVMAJ REVMIN

R-1h R-3h

LEGEND: R = Read only; - n = value after reset

Table 25. MDIO Version Register (VERSION) Field Descriptions

Bit Field Value Description

31-16 MODID 0-FFFFh Identifies type of peripheral.

7h MDIO

15-8 REVMAJ 0-FFh Identifies major revision of peripheral.

1h Current major revision of peripheral.

7-0 REVMIN 0-FFh Identifies minor revision of peripheral.

3h Current minor revision of peripheral.

SPRUEQ6 – December 2007 Ethernet Media Access Controller (EMAC)/Management Data Input/Output (MDIO) 71

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