Cypress CY7C1157V18 TAP Controller Block Diagram, TAP Electrical Characteristics, Gnd ≤ Vi ≤ Vdd

CY7C1146V18, CY7C1157V18

CY7C1148V18, CY7C1150V18

TAP Controller Block Diagram

Figure 3. Tap Controller Block Diagram

TDI

					0
			Bypass Register
Selection			2	1	0	Selection	TDO
Circuitry	Instruction Register					Circuitry
31	30 29 . .		2	1	0
	Identification Register
106	. .	. .	2	1	0
	Boundary Scan Register

TCK TMS

TAP Controller

TAP Electrical Characteristics

The Tap Electrical Characteristics table over the operating range follows. [11, 12, 13]

Parameter	Description	Test Conditions	Min	Max	Unit
VOH1	Output HIGH Voltage	IOH = −2.0 mA	1.4		V
VOH2	Output HIGH Voltage	IOH = −100 μA	1.6		V
VOL1	Output LOW Voltage	IOL = 2.0 mA		0.4	V
VOL2	Output LOW Voltage	IOL = 100 μA		0.2	V
VIH	Input HIGH Voltage		0.65 VDD	VDD + 0.3	V
VIL	Input LOW Voltage		–0.3	0.35 VDD	V
IX	Input and Output Load Current	GND ≤ VI ≤ VDD	−5	5	μA

Notes

11.These characteristics pertain to the TAP inputs (TMS, TCK, TDI, and TDO). Parallel load levels are specified in the Electrical Characteristics Table.

12.Overshoot: VIH(AC) < VDDQ + 0.35V (Pulse width less than tCYC/2), Undershoot: VIL(AC) > −0.3V (Pulse width less than tCYC/2).

13.All voltage referenced to ground.

Document Number: 001-06621 Rev. *D Page 15 of 27

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