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KS8893ML Datasheet(PDF) 59 Page - Micrel Semiconductor |
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KS8893ML Datasheet(HTML) 59 Page - Micrel Semiconductor |
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59 / 106 page ![]() Micrel KS8893M/ML/MI June 2005 59 M9999-063005 Register 6 (0x06): Global Control 4 (continued) Bit Name R/W Description Default 4 Switch MII 10BT R/W = 1, the switch interface is in 10Mbps mode = 0, the switch interface is in 100Mbps mode Pin SMRXD1 strap option. Pull-down(0): Enable 100Mbps Pull-up(1): Enable 10Mbps Note: SMRXD1 has internal pull- down. 3 Null VID Replacement R/W = 1, will replace NULL VID with port VID (12 bits) = 0, no replacement for NULL VID 0 2-0 Broadcast Storm Protection Rate (1) Bit [10:8] R/W This register along with the next register determines how many “64 byte blocks” of packet data are allowed on an input port in a preset period. The period is 67ms for 100BT or 500ms for 10BT. The default is 1%. 000 Register 7 (0x07): Global Control 5 Bit Name R/W Description Default 7-0 Broadcast Storm Protection Rate (1) Bit [7:0] R/W This register along with the previous register determines how many “64 byte blocks” of packet data are allowed on an input port in a preset period. The period is 67ms for 100BT or 500ms for 10BT. The default is 1%. 0x63 Note: (1) 100BT Rate: 148,800 frames/sec * 67 ms/interval * 1% = 99 frames/interval (approx.) = 0x63 Register 8 (0x08): Global Control 6 Bit Name R/W Description Default 7-0 Factory Testing R/W Reserved Do not change the default values. 0x00 Register 9 (0x09): Global Control 7 Bit Name R/W Description Default 7-0 Factory Testing R/W Reserved Do not change the default values. 0x24 Register 10 (0x0A): Global Control 8 Bit Name R/W Description Default 7-0 Factory Testing R/W Reserved Do not change the default values. 0x24 |
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