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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Sep. 24, 2022
Accounting Policies [Abstract]  
Summary of Concentration Risk The following table represents these customers’ aggregate percent of total revenue:
 
    
Year Ended
 
    
September 24,
2022
   
September 25,
2021
   
September 26,
2020
 
Customer A
     94.4     66.9     n/a  
Customer B
     n/a       28.1     44.8
Customer C
     n/a       n/a       42.5
  
 
 
   
 
 
   
 
 
 
Aggregate Percent of Total Revenue
     94.4     95.0     87.3
The following table represents these customers’ aggregate percent of total accounts receivable:
 
    
September 24,
2022
   
September 25,
2021
 
Customer A
     39.5     96.6
Customer B
     40.7     n/a  
Customer C
     15.3     n/a  
  
 
 
   
 
 
 
Aggregate Percent of Total Accounts Receivable
     95.5     96.6
Summary of Property and Equipment Useful Life Depreciation is computed using the straight-line method and depreciation expense is allocated between cost of revenue, research and development expenses, and selling, general, and administrative expenses on the statements of operations over the following estimated useful lives:
 
    
Estimated Useful Life
Computer equipment and software, furniture and fixtures, and test equipment
  
3 - 5 years
Leasehold improvements
   Shorter of estimated useful life or remaining term of the lease
Property and equipment at September 24, 2022 and September 25, 2021 consists of the following (in thousands):
 
    
Year Ended
 
    
September 24,
2022
    
September 25,
2021
 
Computer equipment and software, furniture and fixtures, and test equipment
   $ 45,818      $ 34,268  
Leasehold improvements
     2,904        2,909  
  
 
 
    
 
 
 
Total property and equipment
     48,722        37,177  
Less accumulated depreciation
     (23,844      (18,560
  
 
 
    
 
 
 
Property and equipment, net
   $ 24,878      $ 18,617