PHY Address & Netboot
Michael Wurm <[email protected]>
| Newsgroups | gmane.comp.hardware.microcontrollers.tini |
|---|---|
| Organization | Technical University Graz |
| Message-ID | <opr1n5bcx8bq9re5@localhost> |
Hi, I'm designing a board using DS80C400 with an alternative Ethernet-PHY. I have to hardwire the PHY's address, but when I set it to 00000, the PHY enters isolate-mode automatically after reset. Will the NetBoot also work with a PHY at a different address or clear the isolate-bit? thanks, Michael From the Datasheet: -------------------- PHY Address [4:0]: The values of the PAD[4:0] pins are latched to this register at power-up/reset. The first PHY address bit transmitted or received is the MSB of the address (bit 4). A station management entity connected to multiple PHY entities must know the appropriate address of each PHY. A PHY address of <00000> that is latched in to the part at power-up/reset will cause the Isolate bit of the PR0 (bit 10, register address 00h) to be set. After power up/reset the only way to enable or disable isolate mode is to set or clear the Isolate bit (bit 10) PR0. After power up/reset writing <00000> to bits [4:0] of this register will not cause the part to enter isolate mode. -------------------- _______________________________________________ TINI mailing list TINI-6tN4nzCoH/[email protected] To UNSUBSCRIBE, edit your profile, or see list archives: http://lists.dalsemi.com/mailman/listinfo/tini