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CYD01S36V
CYD02S36V/36VA/CYD04S36V
CYD09S36V/CYD18S36V
Document Number: 38-06076 Rev. *G Page 11 of 28
Table 6. Instruction Identification Codes
Instruction Code Description
EXTEST 0000 Captures the Input/Output ring contents. Places the BSR between the TDI and TDO.
BYPASS 1111 Places the BYR between TDI and TDO.
IDCODE 1011 Loads the IDR with the vendor ID code and places the register between TDI and TDO.
HIGHZ 0111 Places BYR between TDI and TDO. Forces all device output drivers to a High-Z state.
CLAMP 0100 Controls boundary to 1/0. Places BYR between TDI and TDO.
SAMPLE/PRELOAD 1000 Captures the input/output ring contents. Places BSR between TDI and TDO.
NBSRST 1100 Resets the non-boundary scan logic. Places BYR between TDI and TDO.
RESERVED All other codes Other combinations are reserved. Do not use other than the above.
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