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LAN9252/ML データシート(PDF) 269 Page - Microchip Technology

部品番号 LAN9252/ML
部品情報  2/3-Port EtherCAT® Slave Controller with Integrated Ethernet PHYs
PDF  329 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN9252/ML データシート(HTML) 269 Page - Microchip Technology

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 2015 Microchip Technology Inc.
DS00001909A-page 269
LAN9252
12.14.59.2 FMMUx Length Register
Note:
For EtherCAT Core CSR registers longer than one byte, the LSB has the lowest address and the MSB the
highest address.
12.14.59.3 FMMUx Logical Start Bit Register
12.14.59.4 FMMUx Logical Stop Bit Register
Offset:
FMMUx Base Address +4h-5h
Size:
16 bits
Bits
Description
ECAT
Type
PDI
Type
Default
15:0
Length
Offset from the first logical FMMU byte to the last FMMU Byte +
1 (e.g., if two bytes are used, then this parameter shall contain
2).
R/W
RO
0000h
Offset:
FMMUx Base Address +6h
Size:
8 bits
Bits
Description
ECAT
Type
PDI
Type
Default
7:3
RESERVED
Write as 0.
RO
RO
00000b
2:0
Logical Start Bit
Logical starting bit that shall be mapped (bits are counted from
least significant bit (0) to most significant bit (7)).
R/W
RO
000b
Offset:
FMMUx Base Address +7h
Size:
8 bits
Bits
Description
ECAT
Type
PDI
Type
Default
7:3
RESERVED
Write as 0.
RO
RO
00000b
2:0
Logical Stop Bit
Last logical bit that shall be mapped (bits are counted from least
significant bit (0) to most significant bit (7)).
R/W
RO
000b



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