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Document Number: 001-06582 Rev. *D Page 16 of 29
TAP Controller Block Diagram
Figure 3. Tap Controller Block Diagram
TAP Electrical Characteristics
The Tap Electrical Characteristics table over the operating range follows.
[13, 14, 15]
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 μA1.6 V
V
OL1
Output LOW Voltage I
OL
= 2.0 mA 0.4 V
V
OL2
Output LOW Voltage I
OL
= 100 μA0.2V
V
IH
Input HIGH Voltage 0.65 V
DD
V
DD
+ 0.3 V
V
IL
Input LOW Voltage –0.3 0.35 V
DD
V
I
X
Input and Output Load Current GND ≤ V
I
≤ V
DD
–5 5 μA
0
012..
29
3031
Boundary Scan Register
Identification Register
012..
.
.106
012
Instruction Register
Bypass Register
Selection
Circuitry
Selection
Circuitry
TAP Controller
TDI
TDO
TCK
TMS
Notes
13.These characteristic pertain to the TAP inputs (TMS, TCK, TDI and TDO). Parallel load levels are specified in the Electrical Characteristics table.
14.Overshoot: V
IH
(AC) < V
DDQ
+ 0.35V (pulse width less than t
CYC
/2), Undershoot: V
IL
(AC) > −0.3V (pulse width less than t
CYC
/2)
15.All voltage referenced to ground.
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