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KSZ9567R 数据表(PDF) 92 Page - Microchip Technology |
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KSZ9567R 数据表(HTML) 92 Page - Microchip Technology |
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92 / 233 page  KSZ9567R DS00002329E-page 92 2022 Microchip Technology Inc. and its subsidiaries 5.1.4.25 Switch MAC Control 2 Register 5.1.4.26 Switch MAC Control 3 Register 2 Jumbo Packet Support The programmable packet payload size limit is specified in register 0x0308 – 0x0309, up to a maximum of 9000 bytes. This bit overrides bit 1 of this register. 1 = Enable support for jumbo packets 0 = Disable R/W 0b 1 Legal Maximum Packet Size Check Disable 1 = Accept packets up to 2000 bytes in size. 0 = Accept only standard size packets, up to 1522 bytes for tagged packets, or 1518 bytes for untagged packets. Larger packets will be dropped. R/W 0b 0 Pass Short Packet 1 = Accept packets between 32 and 64 bytes in size. 0 = Accept only standard size packets, at least 64 bytes. Smaller packets are dropped. R/W 0b Address: 0x0332 Size: 8 bits Bits Description Type Default 7:4 RESERVED R/W 0x0 3 Null VID Replacement Describes the behavior when a packet is received with a null (zero) VID. 1 = Replace a null VID with the Port Default VID as defined in the Port Default Tag 0 Register and Port Default Tag 1 Register 0 = No replacement of null VID R/W 0b 2:0 Broadcast Storm Protection Rate bits [10:8] The remainder of this fields bits are in the Switch MAC Control 3 Register. Multiply this value by 64 to determine how many bytes of packet data are allowed on an input port in a preset period. The period is 5ms for a 1000Mbps port, 50ms for a 100Mbps port, or 500ms for a 10Mbps. The default is 1%. R/W 000b Address: 0x0333 Size: 8 bits Bits Description Type Default 7:0 Broadcast Storm Protection Rate bits [7:0] The remainder of this fields bits are in the Switch MAC Control 2 Register. Multiply this value by 64 to determine how many bytes of packet data are allowed on an input port in a preset period. The period is 5ms for a 1000Mbps port, 50ms for a 100Mbps port, or 500ms for a 10Mbps. The default is 1%. R/W 0x4A Bits Description Type Default |
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