mirror of https://github.com/VLSIDA/OpenRAM.git
43 lines
1.3 KiB
Python
43 lines
1.3 KiB
Python
import globals
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import design
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from math import log
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import design
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from tech import GDS,layer
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import utils
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class ms_flop(design.design):
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"""
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Memory address flip-flop
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"""
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pins = ["din", "dout", "dout_bar", "clk", "vdd", "gnd"]
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chars = utils.auto_measure_libcell(pins, "ms_flop", GDS["unit"], layer["boundary"])
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def __init__(self, name):
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design.design.__init__(self, name)
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self.width = ms_flop.chars["width"]
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self.height = ms_flop.chars["height"]
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self.clk_offset = ms_flop.chars["clk"]
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self.din_offset = ms_flop.chars["din"]
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self.dout_offset = ms_flop.chars["dout"]
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self.dout_bar_offset = ms_flop.chars["dout_bar"]
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def delay(self, slew, load = 0.0):
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#import pinv
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# use inv to mimic the delay
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# din -> mout
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#ref = pinv.pinv("reference_inv")
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#mid_load = ref.input_load()
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#din_t_mout_delay = ref.delay(slew = slew, load = mid_load)
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# mout -> out
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#mout_t_out_delay = ref.delay(slew = slew, load = load)
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#result = din_t_mout_delay + mout_t_out_delay
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# dont k how to calculate this now, use constant in tech file
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from tech import spice
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result = self.return_delay(spice["msflop_delay"], spice["msflop_slew"])
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return result
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