User Guide

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4 MDIO Registers
4.1 MDIO Version Register (VERSION)
MDIO Registers
Table 10 lists the memory-mapped registers for the MDIO module. See the device-specific data manual
for the memory address of these registers.
Table 10. 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 13 and described in Table 11 .
Figure 13. 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 11. MDIO Version Register (VERSION) Field Descriptions
Bit Field Value Description
31-16 MODID Identifies type of peripheral.
7h MDIO
15-8 REVMAJ Identifies major revision of peripheral. Revisions are indicated by a revision code taking the format
REVMAJ.REVMIN.
1h Current major revision of peripheral.
7-0 REVMIN Identifies minor revision of peripheral. Revisions are indicated by a revision code taking the format
REVMAJ.REVMIN.
3h Current minor revision of peripheral.
SPRU941A – April 2007 Ethernet Media Access Controller (EMAC)/ 55
Management Data Input/Output (MDIO)
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