Cypress CY7C1294DV18 - Manual (Page 12)

CY7C1292DV18
CY7C1294DV18
Document #: 001-00350 Rev. *A Page 12 of 23
TAP Controller Block Diagram
0
0 1 2 . . 29 30 31
Boundary Scan Register
Identification Register
0 1 2 . . . . 106
0 1 2
Instruction Register
Bypass Register
Selection
Circuitry
Selection
Circuitry
TAP Controller
TDI
TDO
TCK
TMS
TAP Electrical Characteristics Over the Operating Range [10, 11, 12]
Parameter Description Test Conditions Min. Max. Unit
V
OH1
Output HIGH Voltage I
OH
=
−2.0 mA
1.4 V
V
OH2
Output HIGH Voltage I
OH
=
−100 µA
1.6 V
V
OL1
Output LOW Voltage I
OL
= 2.0 mA 0.4 V
V
OL2
Output LOW Voltage I
OL
= 100
µA
0.2 V
V
IH
Input HIGH Voltage 0.65V
DD
V
DD
+ 0.3 V
V
IL
Input LOW Voltage –0.3 0.35V
DD
V
I
X
Input and OutputLoad Current GND
≤ V
I
≤ V
DD
−5
5
µA
Notes:
10. These characteristic pertain to the TAP inputs (TMS, TCK, TDI and TDO). Parallel load levels are specified in the Electrical Characteristics table.
11. Overshoot: V
IH
(AC) < V
DDQ
+0.85V (Pulse width less than t
CYC
/2), Undershoot: V
IL
(AC) > –1.5V (Pulse width less than t
CYC
/2).
12. All voltage referenced to Ground.
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