Cypress Semiconductor CY7C1364C Manual do Utilizador descarregar pdf (Página 16)

CY7C1364C

Document Number: 001-74592 Rev. *B Page 16 of 29

Instruction 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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