公开(公告)号：US20160308519A1

公开(公告)日：2016-10-20

申请号：US15138142

申请日：2016-04-25

Applicant: QUALCOMM Incorporated

Inventor： Thomas Clark Bryan ,  Alvin Leng Sun Loke ,  Stephen Knol ,  Gregory Francis Lynch ,  Tin Tin Wee ,  LuVerne Ray Peterson ,  Yue Li

IPC: H03K5/15 ,  H01L23/538 ,  H01L25/065

CPC classification number: H03K5/15013 ,  G06F1/10 ,  G11C7/22 ,  H01L23/5384 ,  H01L23/5389 ,  H01L25/0655 ,  H01L2224/04105 ,  H01L2224/12105 ,  H01L2224/16225 ,  H01L2224/16227 ,  H01L2224/16235 ,  H01L2224/20 ,  H01L2224/24137 ,  H01L2224/73267 ,  H01L2924/15311

Abstract: Circuits for die-to-die clock distribution are provided. A system includes a transmit clock tree on a first die and a receive clock tree on a second die. The transmit clock tree and the receive clock tree are the same, or very nearly the same, so that the insertion delay for a given bit on the transmit clock tree is the same as an insertion delay for a bit corresponding to the given bit on the receive clock tree. While there may be clock skew from bit-to-bit within the same clock tree, corresponding bits on the different die experience the same clock insertion delays.