LAN9221i SMSC [SMSC Corporation], LAN9221i Datasheet - Page 37
LAN9221i
Manufacturer Part Number
LAN9221i
Description
High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LAN9221I.pdf
(151 pages)
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High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
Datasheet
SMSC LAN9221/LAN9221i
AND/OR (FSELEND = 1 for Data FIFO direct access when FIFO_SEL=1)
AND/OR (FSELEND = 1 for Data FIFO direct access when FIFO_SEL=1)
31
(FPORTEND = 1 for Data FIFO port access on addresses 00h-3Ch)
31
(FPORTEND = 1 for Data FIFO port access on addresses 00h-3Ch)
MSB
MSB
A[1] = 1
A[1] = 0
A[1] = 1
A[1] = 0
3
3
24
24
23
15
23
15
INTERNAL FIFO ORDER
INTERNAL FIFO ORDER
HOST DATA BUS
HOST DATA BUS
BIG ENDIAN
BIG ENDIAN
2
0
2
2
2
0
16
16
8
8
7
15
7
15
1
1
3
1
3
1
Figure 3.3 FIFO Access Byte Ordering
8
8
WORD_SWAP != FFFF_FFFFh
0
0
WORD_SWAP = FFFF_FFFFh
7
7
LSB
LSB
0
0
DATASHEET
0
0
37
AND/OR (FSELEND = 0 for Data FIFO direct access when FIFO_SEL=1)
AND/OR (FSELEND = 0 for Data FIFO direct access when FIFO_SEL=1)
31
31
(FPORTEND = 0 for Data FIFO port access on addresses 00h-3Ch)
(FPORTEND = 0 for Data FIFO port access on addresses 00h-3Ch)
MSB
MSB
A[1] = 1
A[1] = 0
A[1] = 0
A[1] = 1
3
3
24
24
23
15
15
23
INTERNAL FIFO ORDER
INTERNAL FIFO ORDER
LITTLE ENDIAN
LITTLE ENDIAN
HOST DATA BUS
HOST DATA BUS
3
1
2
2
1
3
16
16
8
8
7
15
7
15
2
0
1
0
2
1
8
8
Revision 2.6 (12-04-08)
0
0
7
7
LSB
LSB
0
0
0
0
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