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Tap controller state diagram – Cypress CY7C1312BV18 User Manual

Page 14

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CY7C1310BV18, CY7C1910BV18
CY7C1312BV18, CY7C1314BV18

Document #: 38-05619 Rev. *F

Page 14 of 29

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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