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LAN9252/ML データシート(PDF) 269 Page - Microchip Technology |
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LAN9252/ML データシート(HTML) 269 Page - Microchip Technology |
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269 / 329 page ![]() 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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