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GS81314LD37GK-800 датащи(PDF) 11 Page - GSI Technology |
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GS81314LD37GK-800 датащи(HTML) 11 Page - GSI Technology |
11 / 39 page GS81314LD19/37GK-933/800 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. Rev: 1.02 3/2016 11/39 © 2015, GSI Technology Register Write Mode Utilization - Synchronous Method Register Write Mode can also be utilized synchronously up to the full operating speed of the device. However, MRW cannot be trained using Loopback Mode, so the ability to use it synchronously may be limited to slower operating frequencies where the lack of training capability is less problematic for the user. In this case, MRW, R, W, and SA[10:1] are all driven synchronously (i.e. they all meet setup and hold time specs to CK). When Register Write Mode is utilized in this manner, multiple registers can be programmed in successive cycles. The timing diagrams below arbitrarily show four registers programmed in successive cycles, but in practice it can be any number greater than or equal to one. The requirements for this usage case are as follows: • At least 16 NOPs must be initiated before and after the Register Write(s). • MRW must be driven High (synchronously), R must be driven Low (synchronously), and SA[10:1] must be driven Valid (syn- chronously) for each Register Write. • W state is a “don’t care” (synchronously) for each Register Write. Synchronous Register Write Timing Diagram CK SA[10:1] W Register Write Mode 16 NOPs Read / Write Read / Write 16 NOPs Reg #d Reg #a MRW Reg #b Reg #c tIVKH tKHIX tRVKH tKHRX R X X X X V V V V V V V V V |
Аналогичный номер детали - GS81314LD37GK-800 |
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Аналогичное описание - GS81314LD37GK-800 |
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