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RTL8101E-GR Datasheet(PDF) 19 Page - Realtek Semiconductor Corp. |
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RTL8101E-GR Datasheet(HTML) 19 Page - Realtek Semiconductor Corp. |
19 / 28 page ![]() RTL8101E-GR Datasheet Integrated Fast Ethernet Controller for PCI Express 14 Track ID: JATR-1076-21 Rev. 1.1 Link Wakeup occurs only when the following conditions are met: • The LinkUp bit (CONFIG3#4) is set to 1, the PMEn bit (CONFIG1#0) is set to 1, and the corresponding wake-up method (message, beacon, or LANWAKEB) can be asserted in the current power state. Magic Packet Wakeup occurs only when the following conditions are met: • The destination address of the received Magic Packet is acceptable to the RTL8101E, e.g., a broadcast, multicast, or unicast packet addressed to the current RTL8101E adapter. • The received Magic Packet does not contain a CRC error. • The Magic bit (CONFIG3#5) is set to 1, the PMEn bit (CONFIG1#0) is set to 1, and the corresponding wake-up method (message, beacon, or LANWAKEB) can be asserted in the current power state. • The Magic Packet pattern matches, i.e. 6 * FFh + MISC (can be none) + 16 * DID (Destination ID) in any part of a valid Ethernet packet. A Wakeup Frame event occurs only when the following conditions are met: • The destination address of the received Wakeup Frame is acceptable to the RTL8101E, e.g., a broadcast, multicast, or unicast address to the current RTL8101E adapter. • The received Wakeup Frame does not contain a CRC error. • The PMEn bit (CONFIG1#0) is set to 1. • The 16-bit CRCA of the received Wakeup Frame matches the 16-bit CRC of the sample Wakeup Frame pattern given by the local machine’s OS. Or, the RTL8101E is configured to allow direct packet wakeup, e.g., a broadcast, multicast, or unicast network packet. Note: 16-bit CRC: The RTL8101E supports two normal wakeup frames (covering 64 mask bytes from offset 0 to 63 of any incoming network packet) and three long wakeup frames (covering 128 mask bytes from offset 0 to 127 of any incoming network packet). The corresponding wake-up method (message, beacon, or LANWAKEB) is asserted only when the following conditions are met: • The PMEn bit (bit0, CONFIG1) is set to 1. • The PME_En bit (bit8, PMCSR) in PCI Configuration Space is set to 1. • The RTL8101E may assert the corresponding wake-up method (message, beacon, or LANWAKEB) in the current power state or in isolation state, depending on the PME_Support (bit15-11) setting of the PMC register in PCI Configuration Space. • A Magic Packet, LinkUp, or Wakeup Frame has been received. • Writing a 1 to the PME_Status (bit15) of the PMCSR register in the PCI Configuration Space clears this bit and causes the RTL8101E to stop asserting the corresponding wake-up method (message, beacon, or LANWAKEB) (if enabled). |
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