Part Number: DP83822
The DP83822 has extended registers than can help improve the margins for 10BaseTe TP_IDL tests.
Register 0x0023[11:8] = 0x8 by Default
Setting 0x0023[11:8] to 0x9 or 0xA can improve Margins.
See Pictures below (TP_IDL Load2)
| 0x0023[11:8] =0x8 |  |
| 0x0023[11:8] = 0x9 |  |
| 0x0023[11:8] = 0xA |  |
Figure 1 - Test Setup