Please login to view the entire Verification Horizons article.
Please register or login to view.
by Gayathri SN and Badrinath Ramachandra, L&T Technology Services Limited
INTRODUCTION
Power management is a major concern throughout the chip design flow from architectural design to RTL implementation and physical design. Multi-power domain SoCs are complex and present new integration and verification challenges because many blocks have different operating modes at different voltages, different clock period and duty cycles of each block being awake, asleep or in shutdown mode. USB 3.0 or USB 2.0 Lower Layer resides in an always on power domain. This block has to be powered-on always for normal USB functionality and also to initiate suspend and wake-up sequences. If Link settles in USB 2.0 mode, USB 3.0 Lower Layer can be powered off. If
...