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PEP8 cleanup

This commit is contained in:
mrg 2020-06-26 11:47:35 -07:00
parent 567675ab31
commit e23d41c1d4
1 changed files with 20 additions and 19 deletions
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35
compiler/modules/sense_amp.py
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@ -8,11 +8,12 @@
import design import design
import debug import debug
import utils import utils
from tech import GDS,layer, parameter,drc from tech import GDS, layer, parameter, drc
from tech import cell_properties as props from tech import cell_properties as props
from globals import OPTS from globals import OPTS
import logical_effort import logical_effort
class sense_amp(design.design): class sense_amp(design.design):
""" """
This module implements the single sense amp cell used in the design. It This module implements the single sense amp cell used in the design. It
@ -28,10 +29,10 @@ class sense_amp(design.design):
props.sense_amp.pin.gnd] props.sense_amp.pin.gnd]
type_list = ["INPUT", "INPUT", "OUTPUT", "INPUT", "POWER", "GROUND"] type_list = ["INPUT", "INPUT", "OUTPUT", "INPUT", "POWER", "GROUND"]
if not OPTS.netlist_only: if not OPTS.netlist_only:
(width,height) = utils.get_libcell_size("sense_amp", GDS["unit"], layer["boundary"]) (width, height) = utils.get_libcell_size("sense_amp", GDS["unit"], layer["boundary"])
pin_map = utils.get_libcell_pins(pin_names, "sense_amp", GDS["unit"]) pin_map = utils.get_libcell_pins(pin_names, "sense_amp", GDS["unit"])
else: else:
(width, height) = (0,0) (width, height) = (0, 0)
pin_map = [] pin_map = []
def get_bl_names(self): def get_bl_names(self):
@ -61,37 +62,37 @@ class sense_amp(design.design):
# FIXME: This input load will be applied to both the s_en timing and bitline timing. # FIXME: This input load will be applied to both the s_en timing and bitline timing.
#Input load for the bitlines which are connected to the source/drain of a TX. Not the selects. # Input load for the bitlines which are connected to the source/drain of a TX. Not the selects.
from tech import spice, parameter from tech import spice
# Default is 8x. Per Samira and Hodges-Jackson book: # Default is 8x. Per Samira and Hodges-Jackson book:
# "Column-mux transistors driven by the decoder must be sized for optimal speed" # "Column-mux transistors driven by the decoder must be sized for optimal speed"
bitline_pmos_size = 8 #FIXME: This should be set somewhere and referenced. Probably in tech file. bitline_pmos_size = 8 # FIXME: This should be set somewhere and referenced. Probably in tech file.
return spice["min_tx_drain_c"]*(bitline_pmos_size)#ff return spice["min_tx_drain_c"] * bitline_pmos_size # ff
def get_stage_effort(self, load): def get_stage_effort(self, load):
#Delay of the sense amp will depend on the size of the amp and the output load. # Delay of the sense amp will depend on the size of the amp and the output load.
parasitic_delay = 1 parasitic_delay = 1
cin = (parameter["sa_inv_pmos_size"] + parameter["sa_inv_nmos_size"])/drc("minwidth_tx") cin = (parameter["sa_inv_pmos_size"] + parameter["sa_inv_nmos_size"]) / drc("minwidth_tx")
sa_size = parameter["sa_inv_nmos_size"]/drc("minwidth_tx") sa_size = parameter["sa_inv_nmos_size"] / drc("minwidth_tx")
cc_inv_cin = cin cc_inv_cin = cin
return logical_effort.logical_effort('column_mux', sa_size, cin, load+cc_inv_cin, parasitic_delay, False) return logical_effort.logical_effort('column_mux', sa_size, cin, load + cc_inv_cin, parasitic_delay, False)
def analytical_power(self, corner, load): def analytical_power(self, corner, load):
"""Returns dynamic and leakage power. Results in nW""" """Returns dynamic and leakage power. Results in nW"""
#Power in this module currently not defined. Returns 0 nW (leakage and dynamic). # Power in this module currently not defined. Returns 0 nW (leakage and dynamic).
total_power = self.return_power() total_power = self.return_power()
return total_power return total_power
def get_en_cin(self): def get_en_cin(self):
"""Get the relative capacitance of sense amp enable gate cin""" """Get the relative capacitance of sense amp enable gate cin"""
pmos_cin = parameter["sa_en_pmos_size"]/drc("minwidth_tx") pmos_cin = parameter["sa_en_pmos_size"] / drc("minwidth_tx")
nmos_cin = parameter["sa_en_nmos_size"]/drc("minwidth_tx") nmos_cin = parameter["sa_en_nmos_size"] / drc("minwidth_tx")
#sen is connected to 2 pmos isolation TX and 1 nmos per sense amp. # sen is connected to 2 pmos isolation TX and 1 nmos per sense amp.
return 2*pmos_cin + nmos_cin return 2 * pmos_cin + nmos_cin
def get_enable_name(self): def get_enable_name(self):
"""Returns name used for enable net""" """Returns name used for enable net"""
#FIXME: A better programmatic solution to designate pins # FIXME: A better programmatic solution to designate pins
enable_name = self.en_name enable_name = self.en_name
debug.check(enable_name in self.pin_names, "Enable name {} not found in pin list".format(enable_name)) debug.check(enable_name in self.pin_names, "Enable name {} not found in pin list".format(enable_name))
return enable_name return enable_name