SMSC LAN9311 User Manual

Page of 460
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
189
Revision 1.4 (08-19-08)
DATASHEET
 
14.2.2.8
Host MAC CSR Interface Data Register (MAC_CSR_DATA)
This read-write register is used in conjunction with the 
 to indirectly access the Host MAC CSR’s.
Note:
The full list of Host MAC CSR’s are described in 
. For more information on the Host MAC, refer to 
.
Offset:
0A8h
Size:
32 bits
BITS
DESCRIPTION
TYPE
DEFAULT
31:0
Host MAC CSR Data
This field contains the value read from or written to the Host MAC CSR as 
specified in the 
. Upon a read, the value returned depends on the R/nW 
bit in the MAC_CSR_CMD register. If R/nW is a 1, the data in this register 
is from the Host MAC. If R/nW is 0, the data is the value that was last written 
into this register.
Note:
The MAC_CSR_CMD and MAC_CSR_DATA registers must not be 
modified until the CSR Busy bit is cleared in the MAC_CSR_CMD 
register.
R/W
00000000h