May 17, 2011 #1 C chris_li Member level 2 Joined Nov 7, 2005 Messages 42 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,569 Hi Guy, I am junior, I want to ask a foolish question, in general, selecting which layer for SRAM/subblock power ring? Is there any routine or experience? Thanks.
Hi Guy, I am junior, I want to ask a foolish question, in general, selecting which layer for SRAM/subblock power ring? Is there any routine or experience? Thanks.
May 17, 2011 #2 L lohi21 Member level 3 Joined Dec 12, 2009 Messages 64 Helped 11 Reputation 22 Reaction score 10 Trophy points 1,288 Location Singapore Activity points 1,691 chris_li said: Hi Guy, I am junior, I want to ask a foolish question, in general, selecting which layer for SRAM/subblock power ring? Is there any routine or experience? Thanks. Click to expand... Hi chris, if you know, which metal layer is being used out SRAM/sub block, then prefer same metal for your ring creation. but if your SRAM is a macro, then your approach would be different, and various factors to be considered before using any particular metal layer. In general: most likely the same metal layer as out side your block for mesh and/or if your design is working on single voltage domain.
chris_li said: Hi Guy, I am junior, I want to ask a foolish question, in general, selecting which layer for SRAM/subblock power ring? Is there any routine or experience? Thanks. Click to expand... Hi chris, if you know, which metal layer is being used out SRAM/sub block, then prefer same metal for your ring creation. but if your SRAM is a macro, then your approach would be different, and various factors to be considered before using any particular metal layer. In general: most likely the same metal layer as out side your block for mesh and/or if your design is working on single voltage domain.
May 24, 2011 #3 R rca Advanced Member level 5 Joined May 20, 2010 Messages 1,527 Helped 355 Reputation 710 Reaction score 336 Trophy points 1,363 Location Marin Activity points 8,773 why do you want to have a dedicated power ring for each ram?, you could connect by a grid upper the RAM? some ram have already an internal power ring, some not...
why do you want to have a dedicated power ring for each ram?, you could connect by a grid upper the RAM? some ram have already an internal power ring, some not...