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LAN9220 датащи(PDF) 27 Page - Microchip Technology

номер детали LAN9220
подробное описание детали  16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support
PDF  142 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN9220 датащи(HTML) 27 Page - Microchip Technology

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 2006-2017 Microchip Technology Inc.
DS00002417A-page 27
LAN9220
Data path operations for the various supported endianess and word swap configurations are illustrated in Figure 3-9.
Table 3-8, "Endian Ordering Logic Operation" illustrates the byte ordering applied by the 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 3-8:
LAN9220 HOST DATA PATH DIAGRAM
"W ORD S W AP"
Logic
FIFO Port Endian O rdering
Logic
RX /TX Data FIFO Port
A ccess (addresses 00h to
3C h)
D irect FIFO A ccess E ndian
O rdering Logic
RX/TX Data FIFO Direct
A ccess
(FIFO _SE L = 1)
CSRs and S tatus FIFO s
FPO R TEN D
(H W _C FG [29])
FSELEN D
(H W _C FG [28])
D[15:0]
(H ost D ata B us)
W O RD_S W AP



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