Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
4.2
Control and Status Registers
Table 4.2 provides a list of supported registers. Register details, including bit definitions, are provided
in the proceeding subsections.
Table 4.2 SMI Register Map
REGISTER INDEX
(DECIMAL)
REGISTER NAME
Basic Control Register
GROUP
0
1
Basic
Basic Status Register
Basic
2
PHY Identifier 1
Extended
3
PHY Identifier 2
Extended
4
Auto-Negotiation Advertisement Register
Auto-Negotiation Link Partner Ability Register
Auto-Negotiation Expansion Register
Mode Control/Status Register
Special Modes
Extended
5
Extended
6
Extended
17
18
26
27
29
30
31
Vendor-specific
Vendor-specific
Vendor-specific
Vendor-specific
Vendor-specific
Vendor-specific
Vendor-specific
Symbol Error Counter Register
Control / Status Indication Register
Interrupt Source Register
Interrupt Mask Register
PHY Special Control/Status Register
Revision 1.4 (08-23-12)
48
SMSC LAN8720A/LAN8720Ai
DATASHEET