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TMS320C6748开发板PCB叠层厚度问题

Other Parts Discussed in Thread: TMS320C6748

TMS320C6748 DSP 开发套件 的PCB叠层厚度不对称,pp层49mil,为什么这样设计?是因为芯片都在顶层吗?顶层和底层的覆铜为2OZ(2.5Mil),,为什么不用1OZ呢,不够吗?

www.ti.com.cn/.../TMDXLCDK6748