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Signal/Connection Descriptions
JTAG/OnCE Interface
Table 2-15 JTAG/OnCE Interface (Continued)
Signal
Signal
Name
Type
TDI
Input
TDO
Output
Tri-stated
TMS
Input
2-22
State
during
Reset
Input
Test Data Input—TDI is a test data serial input signal used for test instructions and data.
TDI is sampled on the rising edge of TCK and has an internal pull-up resistor.
This input is 3.3V tolerant.
Test Data Output—TDO is a test data serial output signal used for test instructions and
data. TDO is tri-statable and is actively driven in the shift-IR and shift-DR controller states.
TDO changes on the falling edge of TCK.
Input
Test Mode Select—TMS is an input signal used to sequence the test controller's state
machine. TMS is sampled on the rising edge of TCK and has an internal pull-up resistor.
This input is 3.3V tolerant.
DSP56367
Signal Description
MOTOROLA
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