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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Significant customer concentrations as a percentage of total accounts receivable) (Details) - Accounts Receivable [Member] - Customer Concentration Risk [Member]		9 Months Ended
		Jun. 29, 2019	Jun. 30, 2018
Super Power International
Concentration Risk [Line Items]
Customer concentrations risk percentage	[1]	15.80%	13.00%
Haoseng Industrial Company Limited
Concentration Risk [Line Items]
Customer concentrations risk percentage	[1]		27.60%
Forehope Electronic (Ningbo) Co Ltd [Member]
Concentration Risk [Line Items]
Customer concentrations risk percentage		14.40%
Micron Technology, Inc [Member] [Member]
Concentration Risk [Line Items]
Customer concentrations risk percentage		10.20%
[1] Distributor of the Company's products.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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