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KSZ9567R 数据表(PDF) 156 Page - Microchip Technology |
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KSZ9567R 数据表(HTML) 156 Page - Microchip Technology |
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156 / 232 page ![]() KSZ9567R DS00002329D-page 156 2017-2019 Microchip Technology Inc. 5.2.4 PORT N: PORT SWITCH MAC CONTROL REGISTERS (0xN400 - 0xN4FF) 5.2.4.1 Port MAC Control 0 Register 5.2.4.2 Port MAC Control 1 Register Address: 0xN400 Port N: 1-7 Size: 8 bits Bits Description Type Default 7:4 RESERVED RO 0x0 3 RESERVED R/W 0b 2 RESERVED RO 0b 1 Broadcast Storm Protection Enable 1 = Enable broadcast storm protection for ingress traffic 0 = Disable broadcast storm protection for ingress traffic R/W 0b 0 RESERVED R/W 0b Address: 0xN401 Port N: 1-7 Size: 8 bits Bits Description Type Default 7 RESERVED R/W 0b 6 RESERVED RO 0b 5:4 RESERVED R/W 00b 3 Back pressure Enable Back pressure is used only for half duplex. Full duplex uses PAUSE frame flow control which is enabled separately. 1 = Enable port back pressure 0 = Disable port back pressure R/W 0b 2:1 RESERVED R/W 00b 0 Pass All Frames Bad frames (CRC error, too large, too small) are normally dropped. This feature allows them to be forwarded for mirroring purposes only. This bit does not affect filtering of flow control frames. To disable filtering of flow control frames, refer to the Switch MAC Control 4 Register. 1 = Enable 0 = Disable R/W 0b |
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