Cypress Semiconductor CY7C1383D Manual do Utilizador descarregar pdf (Página 15)

CY7C1381D

CY7C1383D

Document #: 38-05544 Rev. *C Page 15 of 29

Identification Codes

Instruction Code Description

EXTEST 000 Captures I/O ring contents. Places the boundary scan register between TDI and TDO.

Forces all SRAM outputs to High-Z state.

IDCODE 001 Loads the ID register with the vendor ID code and places the register between TDI and

TDO. This operation does not affect SRAM operations.

SAMPLE Z 010 Captures I/O ring contents. Places the boundary scan register between TDI and TDO.

Forces all SRAM output drivers to a High-Z state.

RESERVED 011 Do Not Use: This instruction is reserved for future use.

SAMPLE/PRELOAD 100 Captures I/O ring contents. Places the boundary scan register between TDI and TDO.

Does not affect SRAM operation.

RESERVED 101 Do Not Use: This instruction is reserved for future use.

RESERVED 110 Do Not Use: This instruction is reserved for future use.

BYPASS 111 Places the bypass register between TDI and TDO. This operation does not affect SRAM

operations.

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