High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
14.2.6.4
Switch Fabric CSR Interface Data Register (SWITCH_CSR_DATA)
Offset:
1ACh
Size:
32 bits
This read/write register is used in conjunction with the Switch Fabric CSR Interface Command Register
(SWITCH_CSR_CMD) to perform read and write operations with the Switch Fabric CSR’s. Refer to
Section 14.5, "Switch Fabric Control and Status Registers," on page 308 for details on the registers
indirectly accessible via this register.
BITS
DESCRIPTION
Switch CSR Data (CSR_DATA)
TYPE
DEFAULT
31:0
R/W
00000000h
This field contains the value read from or written to the Switch Fabric CSR.
The Switch Fabric CSR is selected via the CSR Address (CSR_ADDR[15:0])
bits of the Switch Fabric CSR Interface Command Register
(SWITCH_CSR_CMD).
Upon a read, the value returned depends on the R/nW bit in the Switch
Fabric CSR Interface Command Register (SWITCH_CSR_CMD). If R/nW is
set, the data is from the switch fabric. If R/nW is cleared, the data is the
value that was last written into this register.
SMSC LAN9312
235
Revision 1.2 (04-08-08)
DATASHEET
SMSC [ SMSC CORPORATION ]
