Tap controller state diagram – Cypress CY7C1318CV18-200BZI User Manual

Page 12

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CY7C1318CV18
CY7C1320CV18

Document Number: 001-07160 Rev. *F

Page 12 of 26

TAP Controller State Diagram

The state diagram for the TAP controller follows.

[9]

TEST-LOGIC
RESET

TEST-LOGIC/
IDLE

SELECT
DR-SCAN

CAPTURE-DR

SHIFT-DR

EXIT1-DR

PAUSE-DR

EXIT2-DR

UPDATE-DR

1

0

1

1

0

1

0

1

0

0

0

1

1

1

0

1

0

1

0

0

0

1

0

1

1

0

1

0

0

1

1

0

SELECT
IR-SCAN

CAPTURE-IR

SHIFT-IR

EXIT1-IR

PAUSE-IR

EXIT2-IR

UPDATE-IR

Note

9. The 0/1 next to each state represents the value at TMS at the rising edge of TCK.

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