Cypress CY7C1268V18 TAP Controller State Diagram, State diagram for the TAP controller follows.9

CY7C1266V18, CY7C1277V18

CY7C1268V18, CY7C1270V18

TAP Controller State Diagram

The state diagram for the TAP controller follows.[9]

1

0

TEST-LOGIC RESET

0

TEST-LOGIC/ IDLE

1	SELECT	1	1
			SELECT
	DR-SCAN		IR-SCAN
	0		0
	1		1
	CAPTURE-DR		CAPTURE-IR
	0		0

SHIFT-DR		0	SHIFT-IR		0
1			1
EXIT1-DR		1	EXIT1-IR		1
0			0
PAUSE-DR		0	PAUSE-IR		0
1			1
0			0
EXIT2-DR			EXIT2-IR
1			1
UPDATE-DR			UPDATE-IR
1	0		1	0

Note

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

Document Number: 001-06347 Rev. *D Page 14 of 27

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