Part Number: DP83867E
Other Parts Discussed in Thread: AM6546
Hi Team,
My customer is using DP83867ERGZ for 1000BASE connection(LAN and WAN) along with AM6546 in one of the project.
Currently doing the Hardware Validation and are doing the Electrical signal measurements to verify the RGMII v2.0 Timing Requirements.
Below are the measurements
| RGMII Timing Parameters 1000BASE | |||
| Tx/Rx | Parameter | Requirement | Measured |
| RX 1000BASE | Rx Setup Time | 2ns | 2.8ns |
| Rx Hold Time | 2ns | 5.3ns | |
| Rx Clock Cycle | 8ns | 8ns | |
| Rx Clock Fall Time | 0.75ns | 1.75ns | |
| Rx Clock Rise Time | 0.75ns | 1.75ns | |
From the measurements it is observed that the Rx signals are not meeting the Timing requirements.
Since these are just point to point connections with only series termination resistor in between, we do not have any control in hardware for these signals.
Requested your help to analyze and resolve this issue.
Please find attached snapshot, help with your inputs and comments to resolve this issue.
waveforms_06102020_RGMII (1).zip
Regards, Shinu Mathew.
