lan9220 Standard Microsystems Corp., lan9220 Datasheet - Page 35
lan9220
Manufacturer Part Number
lan9220
Description
16-bit Non-pci Small Form Factor 10/100 Ethernet Controller With Variable Voltage I/o & Hp Auto-mdix Support
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9220.pdf
(150 pages)
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16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support
Datasheet
SMSC LAN9220
C SR s and Status FIFO s
Data path operations for the various supported endianess and word swap configurations are illustrated
in
endian logic for each type of host access. This figure and table assume an internal byte ordering of 3-
2-1-0, where ‘3’ is the most significant byte (data[31:24]) and ‘0’ is the least significant byte (data[7:0]).
Figure
W O R D _SW A P
3.3.
(H W _C FG [29])
FPO R TEN D
Table 3.8, "Endian Ordering Logic Operation"
Figure 3.2 LAN9220 Host Data Path Diagram
FIFO Port Endian O rdering
A ccess (addresses 00h to
R X/TX D ata FIFO Port
(H ost D ata B us)
"W O R D SW A P"
D [15:0]
Logic
Logic
3C h)
DATASHEET
35
D irect FIFO A ccess Endian
illustrates the byte ordering applied by the
R X/TX D ata FIFO D irect
(FIFO _SEL = 1)
O rdering Logic
A ccess
Revision 2.6 (12-04-08)
(H W _C FG [28])
FSELEN D
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