MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 119

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MMC2114

Manufacturer Part Number
MMC2114
Description
M CORE Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet

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3.5.9 Debug and Emulation Support Signals
3.5.9.1 Test Reset (TRST)
3.5.9.2 Test Clock (TCLK)
3.5.9.3 Test Mode Select (TMS)
3.5.9.4 Test Data Input (TDI)
3.5.9.5 Test Data Output (TDO)
3.5.9.6 Debug Event (DE)
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
MOTOROLA
These signals are used as the interface to the on-chip JTAG (Joint Test
Action Group) controller and also to interface to the OnCE logic.
This active-low input signal is used to initialize the JTAG and OnCE logic
asynchronously.
This input signal is the test clock used to synchronize the JTAG and
OnCE logic.
This input signal is used to sequence the JTAG state machine. TMS is
sampled on the rising edge of TCLK.
This input signal is the serial input for test instructions and data. TDI is
sampled on the rising edge of TCLK.
This output signal is the serial output for test instructions and data. TDO
is three-stateable and is actively driven in the shift-IR and shift-DR
controller states. TDO changes on the falling edge of TCLK.
This is a bidirectional, active-low signal. As an output, this signal will be
asserted for three system clocks, synchronous to the rising CLKOUT
edge, to acknowledge that the CPU has entered debug mode as a result
of a debug request or a breakpoint condition. As an input, this signal
provides multiple functions.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
Signal Description
Advance Information
Signal Descriptions
Signal Description
119

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