CY7C1141V18, CY7C1156V18
CY7C1143V18, CY7C1145V18
TAP Controller Block Diagram
Figure 3. Tap Controller Block Diagram
TDI
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| 0 |
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| Bypass Register |
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Selection |
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| 2 | 1 | 0 | Selection | TDO |
Circuitry | Instruction Register |
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31 | 30 29 . | . | 2 | 1 | 0 |
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| Identification Register |
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106 | . . | . | . | 2 | 1 | 0 |
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| Boundary Scan Register |
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TCK TMS
TAP Controller
TAP Electrical Characteristics
The Tap Electrical Characteristics table over the operating range follows.[12, 13, 14]
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 |
| 0.35 VDD | V | |
IX | Input and Output Load Current | GND ≤ VI ≤ VDD | 5 | μA |
Notes
12.These characteristic pertain to the TAP inputs (TMS, TCK, TDI and TDO). Parallel load levels are specified in the Electrical Characteristics table.
13.Overshoot: VIH(AC) < VDDQ + 0.35V (Pulse width less than tCYC/2), Undershoot: VIL(AC) > −0.3V (Pulse width less than tCYC/2).
14.All voltage refer to ground.
Document Number: | Page 16 of 28 |
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