mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 491
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mcf5272
Manufacturer Part Number
mcf5272
Description
Mcf5272 Coldfire Integrated Microprocessor User
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MCF5272.pdf
(550 pages)
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Non-IEEE 1149.1 Operation
21.7 Non-IEEE 1149.1 Operation
In non-IEEE 1149.1 operation, IEEE 1149.1 test logic must be made transparent to system
logic by forcing the TAP controller into test-logic-reset state, which takes at least five
consecutive TCK rising edges with TMS high. TMS has an internal pull-up resistor and
may be left unconnected.
If TMS is unconnected or connected to V
, the TAP controller cannot exit test-logic-reset
CC
state, regardless of the TCK state. This requires the TMS, TCK, and TDI inputs to be high.
MOTOROLA
Chapter 21. IEEE 1149.1 Test Access Port (JTAG)
21-9
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