Cypress CY7C1361C User Manual
Page 16
CY7C1361C
CY7C1363C
Document #: 38-05541 Rev. *F
Page 16 of 31
Scan Register Sizes
Register Name
Bit Size (x 36)
Bit Size (x 18)
Instruction
3
3
Bypass
1
1
ID
32
32
Boundary Scan Order (119-ball BGA package)
71
71
Boundary Scan Order (165-ball FBGA package)
71
71
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.