Datasheet

RTL8169S-32/RTL8169S-64
Datasheet
Integrated Gigabit Ethernet Controller 20 Track ID: JATR-1076-21 Rev. 1.4
A Wakeup Frame event occurs only when the following conditions are met:
• The destination address of the received Wakeup Frame is acceptable to the RTL8110S, e.g. a broadcast, multicast, or unicast
address to the current RTL8110S adapter.
• The received Wakeup Frame does not contain a CRC error.
• The PMEn bit (CONFIG1#0) is set to 1.
• The 16-bit CRC* of the received Wakeup Frame matches with the 16-bit CRC* of the sample Wakeup Frame pattern given
by the local machine’s OS. Or, the RTL8169S is configured to allow direct packet wakeup, e.g. a broadcast, multicast, or
unicast network packet.
*16-bit CRC: The RTL8169S 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 PME# signal is asserted only when the following conditions are met:
1. The PMEn bit (bit0, CONFIG1) is set to 1.
2. The PME_En bit (bit8, PMCSR) in PCI Configuration Space is set to 1.
3. The RTL8169S may assert PME# 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.
4. A Magic Packet, LinkUp, or Wakeup Frame been received.
5. Writing a 1 to the PME_Status (bit15) of the PMCSR register in the PCI Configuration Space clears this bit and causes the
RTL8169S to stop asserting a PME# (if enabled).
When the device is in power down mode, e.g. D1-D3, the IO, MEM, and Boot ROM spaces are all disabled. After a RST#
assertion, the device’s power state is restored to D0 automatically if the original power state was D3
cold
. There is no hardware
delay at the device’s power state transition. When in ACPI mode, the device does not support PME (Power Management
Enable) from D0 (this is the Realtek default setting of the PMC register auto loaded from EEPROM). The setting may be
changed from the EEPROM, if required). The RTL8169S also supports the legacy LAN WAKE-UP function. The LWAKE
pin is used to notify legacy motherboards to execute the wake-up process whenever the device receives a wakeup event, such
as Magic Packet.
The LWAKE signal is asserted according to the following settings:
1. LWPME bit (bit4, CONFIG4):
• LWAKE can only be asserted when the PMEB is asserted and the ISOLATEB is low.
• LWAKE is asserted whenever a wakeup event occurs.
2. Bit1 of DELAY byte (offset 1Fh, EEPROM):
• LWAKE signal is enabled.
• LWAKE signal is disabled.