MDIO Registers
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4
MDIO Registers
Table 22
lists the memory-mapped registers for the MDIO module. See the device-specific data manual
for the memory address of these registers.
Table 22. 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
4.1
MDIO Version Register (VERSION)
The MDIO version register (VERSION) is shown in
Figure 26
and described in
Table 23
.
Figure 26. MDIO Version Register (VERSION)
31
16
MODID
R-7h
15
8
7
0
REVMAJ
REVMIN
R-1h
R-4h
LEGEND: R = Read only; -n = value after reset
Table 23. 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.
4h
Current minor revision of peripheral.
70
Ethernet Media Access Controller (EMAC)/Management Data Input/Output
SPRUFI5B – March 2009 – Revised December 2010
(MDIO)
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