Name PMC (Pic Mezzanine Card)
<<BackSource: Time:2014/8/29 0:00:00
| 【TYPE】： | Typical high-speed & high-density HDI board |
| 【Difficulty】： |
Ⅰ.18 pieces of DDRII chips mounted on both face and back; Ⅱ.High-density placement, strict topology structure and time sequence relation; Ⅲ.Multiple large currents, and strict heat design to meet clients' requirements; |
| 【Countermeasure】： |
Ⅰ.Making detailed data analysis to calculate time sequence; Ⅱ.Conducting pre-simulation to determine DDRII' s routing topology, and delete some unnecessary matching resistance. Ⅲ.Conducting post-simulation to assure their time sequence; Ⅳ.Reasonable design current routing channels through current calculating software; Ⅴ.Using HDI design to meet density requirements; Ⅵ .Multi-person concurrent design ensures board design progress; |
| 【Result】： | Completion time of board design is half of the customer's estimated time, and the signal quality complies with the requirements. |
