Freescale Semiconductor MPC5565, Reference Manual

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Signal Description
MPC5565 Microcontroller Reference Manual, Rev. 1.0
2-24 Freescale Semiconductor
2.3.3.7 Nexus Message Start/End Out
MSEO[1:0]
MSEO[1:0] are outputs that indicate when messages start and end on the MDO pins.
2.3.3.8 Nexus Ready Output
RDY
RDY is an output that indicates to the development tools the data is ready to be read from or written to the
Nexus read/write access registers.
2.3.4 JTAG Signals
2.3.4.1 JTAG Test Clock Input
TCK
TCK provides the clock input for the on-chip test logic.
2.3.4.2 JTAG Test Data Input
TDI
TDI provides the serial test instruction and data input for the on-chip test logic.
2.3.4.3 JTAG Test Data Output
TDO
TDO provides the serial test data output for the on-chip test logic.
2.3.4.4 JTAG Test Mode Select Input
TMS
TMS controls test mode operations for the on-chip test logic.
2.3.4.5 JTAG Compliance Input
JCOMP
The JCOMP pin is used to enable the JTAG TAP controller.
2.3.4.6 Test Mode Enable Input
TEST
The TEST pin is used to place the chip in test mode. It must be negated for normal operation.