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KS8995M_0607 Datasheet(PDF) 48 Page - Micrel Semiconductor |
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KS8995M_0607 Datasheet(HTML) 48 Page - Micrel Semiconductor |
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48 / 76 page  KS8995M Micrel, Inc. M9999-070506 48 July 2006 Address Name Description Mode Default 3 High priority receive 1, flow control may be asserted if the port’s high R/W 0 rate flow control enable priority receive rate is exceeded. (To use this, differential receive rate control must be on.) 0, flow control is not asserted if the port’s high priority receive rate is exceeded. 2 Transmit differential 1, will do transmit rate control on both high and low R/W 0 priority rate control priority packets based on the rate counters defined by the high and low priority packets respectively. 0, will do transmit rate control on any packets. The rate counters defined in low priority will be used. 1 Low priority transmit 1, enable the port’s low priority transmit rate control R/W 0 rate control enable feature. 0, disable the port’s low priority transmit rate control feature. 0 High priority transmit 1, enable the port’s high priority transmit rate control R/W 0 rate control enable feature. 0, disable the port’s high priority transmit rate control feature. Register 28 (0x1C): Port 1 Control 12 Register 44 (0x2C): Port 2 Control 12 Register 60 (0x3C): Port 3 Control 12 Register 76 (0x4C): Port 4 Control 12 Register 92 (0x5C): Port 5 Control 12 Note: Port Control 12 and 13, and Port Status 0 contents can be accessed by MIIM (MDC/MDIO) interface via the standard MIIM register definition. Address Name Description Mode Default 7 Disable auto-negotiation 1, disable auto-negotiation, speed and duplex are R/W 0 decided by bit 6 and 5 of the same register. 0, auto-negotiation is on. 6 Forced speed 1, forced 100BT if AN is disabled (bit 7). R/W 1 0, forced 10BT if AN is disabled (bit 7). 5 Forced duplex 1, forced full-duplex if (1) AN is disabled or (2) AN is R/W 0 enabled but failed. For port 4 only, 0, forced half-duplex if (1) AN is disabled or (2) AN is there is a special enabled but failed. configure pin to set the default, Pin PCRS strap option. Pull-down (0): Force half-duplex. Pull-up (1): Force full-duplex. Note: PCRS has internal pull down. 4 Advertised flow 1, advertise flow control capability. R/W 1 control capability 0, suppress flow control capability from transmission to link partner. 3 Advertised 100BT 1, advertise 100BT full-duplex capability. R/W 1 full-duplex capability 0, suppress 100BT full-duplex capability from transmission to link partner. 2 Advertised 100BT 1, advertise 100BT half-duplex capability. R/W 1 half-duplex capability 0, suppress 100BT half-duplex capability from transmission to link partner. 1 Advertised 10BT 1, advertise 10BT full-duplex capability. R/W 0 full-duplex capability 0, suppress 10BT full-duplex capability from transmission to link partner. |
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