1. Purpose of the gate
Output of the released family members scales up towards forecast demand, with yield and the share of parts in each speed grade monitored.
The volume ramp turns a released member into a supplied product, and it is often the point at which the vendor learns most about the production spread of the process. For an FPGA, supply has two dimensions: the number of parts, set by wafer starts, yield and package capacity, and the mix of grades, set by how the production spread falls into the speed grades. A ramp that delivers enough parts of the wrong grades still leaves customers short.
The review checks yield and grade mix against plan, capacity against the forecast, and the actions in place where either falls short. It also looks at test capacity, since configuration loading makes FPGA test time a frequent bottleneck.
Early field quality is part of the picture. Returns from the first volume shipments are analysed quickly, because a problem found early in the ramp affects few customers.
The ramp review is repeated as further members are released, so the record should make it easy to compare members and see where a later member differs.
Speed grade mix can sometimes be adjusted without new silicon, for example by moving binning limits within the guard bands the characterisation supports, or by offering a fast grade only in some packages. Such changes are decided with characterisation and quality, never by supply alone, because they change what each grade promises.
10 more sections for registered members.