HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 422
HD6417615
Manufacturer Part Number
HD6417615
Description
Hardware Manual
Manufacturer
Hitachi Semiconductor
Datasheet
1.HD6417615.pdf
(873 pages)
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9.3.5
The EtherC has a Magic Packet detection function. This function provides a Wake-On-LAN
(WOL) facility that activates various peripheral devices connected to a LAN from the host device
or other source. This makes it possible to construct a system in which a peripheral device receives
a Magic Packet sent from the host device or other source, and activates itself. Further information
on Magic Packets can be found in the technical documentation published by AMD Corporation.
The procedure for using the WOL function with the SH7615 is as follows.
1. Disable interrupt source output by means of the various interrupt enable/mask registers.
2. Set the Magic Packet detection enable bit.
3. Set the Magic Packet detection interrupt enable bit to the enable setting.
4. If necessary, set the CPU operating mode to sleep mode or set supporting functions to module
5. When a Magic Packet is detected, an interrupt is sent to the CPU. The WOL pin notifies
Notes: 1. When the Magic Packet is detected, data is stored in the RxFIFO by the broadcast
406
standby mode.
peripheral LSIs that the Magic Packet has been detected.
2. With a Magic Packet, reception is performed regardless of the destination address. As a
Magic Packet™ Detection
packet that has received data previously and the EtherC is notified of the receiving
status. To return to normal operation from the interrupt processing, initialize the EtherC
and E-DMAC by using the software reset bit (SWR) in the E-DMAC mode register
(EDMR).
result, this function is valid, and the WOL pin enabled, only in the case of a match with
the destination address specified by the format in the Magic Packet.
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