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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Significant customer concentrations as a percentage of net revenue) (Details) - Revenue Benchmark - Customer Concentration Risk	3 Months Ended
	Dec. 28, 2024	Dec. 30, 2023
Tianshui Huatian Technology Co., Ltd.
Concentration Risk [Line Items]
Customer concentrations risk percentage	10.90%
First Technology China Ltd.
Concentration Risk [Line Items]
Customer concentrations risk percentage	11.80%
Matfron (Shanghai) Semiconductor Technology Co.,Ltd.
Concentration Risk [Line Items]
Customer concentrations risk percentage		10.60%

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- Definition

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