| ??? 10/31/09 14:54 Modified: 10/31/09 14:56 Read: times |
#170279 - it saves I/O's! Responding to: ???'s previous message |
The typical "MII" (media independent interface) to the typical PHY uses about 26 pins. If the PHY is on board, it uses just the transmit/receive lines that actually go to the RJ45, presumably with integrated magnetics. That saves board area, and lots of hassle! Of course, if you damage the PHY, the whole MCU is in the toilet, but "nobody" attempts to repair boards at the component level any longer.
RE |
| Topic | Author | Date |
| Fancy a '51 with TCP/IP? | 01/01/70 00:00 | |
| Dead ? | 01/01/70 00:00 | |
| Shame about the support? | 01/01/70 00:00 | |
| waiting | 01/01/70 00:00 | |
| DIY? | 01/01/70 00:00 | |
| it's still more | 01/01/70 00:00 | |
| Cortex-M3 comparison | 01/01/70 00:00 | |
| PHY on-chip | 01/01/70 00:00 | |
| it saves I/O's! | 01/01/70 00:00 | |
| RMII | 01/01/70 00:00 | |
| to PHY or not to PHY | 01/01/70 00:00 | |
| It's not that easy to damage the PHY | 01/01/70 00:00 | |
| Reason for off-chip PHY | 01/01/70 00:00 | |
| different PHY? | 01/01/70 00:00 | |
| Wisdom of youth | 01/01/70 00:00 | |
Wiznet | 01/01/70 00:00 |