mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 452

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

Operating Mode Configuration Pins
19.17.9 Debug Data (DDATA[3:0])
Debug data signals (DDATA[3:0]) display captured processor data and breakpoint status.
19.17.10 Device Test Enable (TEST)
TEST is used to put the device into various manufacturing test modes. It should be tied to
VDD for normal operation.
19.18 Operating Mode Configuration Pins
The MCF5272 has four mode-select signals, some of which are shared with output signals
used during normal device operation. These signals are HI-Z, QSPI_Dout/WSEL,
QSPI_CLK/BUSW1, and QSPI_CS0/BUSW0. BYPASS is a Motorola test mode signal
and should never have a pull-down resistor. The remaining three mode-select signals must
each have a 4.7-K) pull-up or pull-down resistor. These signals are sampled on the rising
edge of Reset Output (RSTO).
19-38
1
PST[3:0]
1100
1101
1110
1111
These encodings are asserted for multiple cycles.
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
Table 19-7. Processor Status Encoding
1
1
1
1
Continue execution
Begin execution of an instruction
Begin execution of PULSE instruction or WDDATA.
Entry into user mode
Begin execution of PULSE instruction
Begin execution of taken branch
Reserved
Begin execution of RTE instruction
Begin 1 byte transfer on DDATA
Begin 2 byte transfer on DDATA
Begin 3 byte transfer on DDATA
Begin 4 byte transfer on DDATA
Exception processing
Emulator mode entry exception processing
Processor is stopped, waiting for an interrupt
Processor is halted
MCF5272 User’s Manual
Definition
MOTOROLA