RTL8100C & RTL8100CL
Datasheet
LWAKE Signal
The RTL8100C(L) also supports the LAN WAKE-UP function. The LWAKE pin is used to notify the
motherboard to execute the wake-up process whenever the RTL8100C(L) receives a wakeup event, such as
a Magic Packet.
The LWAKE signal is asserted according to the following setting:
• LWPME bit (bit4, CONFIG4)
•
•
0: LWAKE is asserted whenever a wakeup event occurs
1: LWAKE can only be asserted when PMEB is asserted and ISOLATEB is low
• Bit1 of DELAY byte (offset 1Fh, EEPROM)
•
•
0: LWAKE signal is disabled
1: LWAKE signal is enabled
6.6. VPD (Vital Product Data)
Bit 31 of the VPD is used to issue VPD read/write commands and is also a flag used to indicate whether the
transfer of data between the VPD data register and the 93C46 has completed or not.
1.
2.
Write VPD register (write data to the 93C46)
Write the flag bit to 1 at the same time the VPD address is written. When the flag bit is set to 0 by
the RTL8100C(L), the VPD data (all 4 bytes) has been transferred from the VPD data register to the
93C46.
Read VPD register (read data from the 93C46)
Write the flag bit to a zero at the same time the VPD address is written. When the flag bit is set to
one by the RTL8100C(L), the VPD data (all 4 bytes) has been transferred from the 93C46 to the
VPD data register.
Single-Chip Fast Ethernet Controller
48
Track ID: JATR-1076-21 Rev. 1.06
ETC [ ETC ]
