LAN9303 Datasheet, PDF (136/366 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII
Datasheet
Chapter 13 Register Descriptions
This section describes the various control and status registers (CSR’s). These registers are broken
into 3 categories. The following sections detail the functionality and accessibility of all the registers
within each category:
„ Section 13.2, "System Control and Status Registers," on page 138
„ Section 13.3, "Ethernet PHY Control and Status Registers," on page 191
„ Section 13.4, "Switch Fabric Control and Status Registers," on page 212
Figure 13.1 contains an overall base register memory map of the device. This memory map is not
drawn to scale, and should be used for general reference only.
Note: Not all registers are memory mapped or directly addressable. For details on the accessibility
of the various registers, refer the register sub-sections listed above.
3FFh
... _RESERVED
2E0h
2DCh
Switch CSR Direct Data
...
Registers
200h
1DCh
1C0h
1B0h
1ACh
19Ch
Virtual PHY Registers
Switch Interface Registers
RESERVED
0ACh
0A8h
0A4h
PHY Management Interface
Registers
050h
04Ch
RESERVED
Base + 000h
Figure 13.1 Base Register Memory Map
Revision 1.3 (08-27-09)
136
DATASHEET
SMSC LAN9303/LAN9303i