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LAN9220 датащи(PDF) 28 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) 28 Page - Microchip Technology

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LAN9220
DS00002417A-page 28
 2006-2017 Microchip Technology Inc.
FIGURE 3-9:
FIFO ACCESS BYTE ORDERING
BIG ENDIAN
(FPORTEND = 1 for Data FIFO port access on addresses 00h-3Ch)
AND/OR (FSELEND = 1 for Data FIFO direct access when FIFO_SEL=1)
0
1
2
3
0
7
8
15
16
23
31
24
3
2
1
0
0
7
8
15
A[1] = 0
A[1] = 1
MSB
LSB
HOST DATA BUS
INTERNAL FIFO ORDER
0
1
2
3
0
1
2
3
0
7
8
15
0
7
8
15
16
23
31
24
A[1] = 0
A[1] = 1
MSB
LSB
HOST DATA BUS
INTERNAL FIFO ORDER
WORD_SWAP != FFFF_FFFFh
LITTLE ENDIAN
(FPORTEND = 0 for Data FIFO port access on addresses 00h-3Ch)
AND/OR (FSELEND = 0 for Data FIFO direct access when FIFO_SEL=1)
BIG ENDIAN
(FPORTEND = 1 for Data FIFO port access on addresses 00h-3Ch)
AND/OR (FSELEND = 1 for Data FIFO direct access when FIFO_SEL=1)
0
1
2
3
0
7
8
15
16
23
31
24
1
0
3
2
0
7
8
15
A[1] = 0
A[1] = 1
MSB
LSB
HOST DATA BUS
INTERNAL FIFO ORDER
0
1
2
3
2
3
0
1
0
7
8
15
0
7
8
15
16
23
31
24
A[1] = 0
A[1] = 1
MSB
LSB
HOST DATA BUS
INTERNAL FIFO ORDER
WORD_SWAP = FFFF_FFFFh
LITTLE ENDIAN
(FPORTEND = 0 for Data FIFO port access on addresses 00h-3Ch)
AND/OR (FSELEND = 0 for Data FIFO direct access when FIFO_SEL=1)



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