
Signal Descriptions
2-18
Freescale Semiconductor
Table 2-20. Debug Support Signals
Signal Name
Abbreviation
Function
I/O
Test Reset
TRST
This active-low signal is used to initialize the JTAG logic
asynchronously.
I
Test Clock
TCLK
Used to synchronize the JTAG logic.
I
Test Mode Select
TMS
Used to sequence the JTAG state machine. TMS is sampled on the
rising edge of TCLK.
I
Test Data Input
TDI
Serial input for test instructions and data. TDI is sampled on the rising
edge of TCLK.
I
Test Data Output
TDO
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.
O
Development Serial
Clock
DSCLK
Clocks the serial communication port to the BDM module during
packet transfers.
I
Breakpoint
BKPT
Used to request a manual breakpoint.
I
Development Serial
Input
DSI
This internally-synchronized signal provides data input for the serial
communication port to the BDM module.
I
Development Serial
Output
DSO
This internally-registered signal provides serial output communication
for BDM module responses.
O
Processor Status Clock PSTCLK
Used by the development system to known when to sample the
DDATA and PST signals.
O
Debug Data
DDATA[3:0]
Display captured processor data and breakpoint status. The PSTCLK
signal can be used by the development system to know when to
sample DDATA[3:0].
O
Processor Status
Outputs
PST[3:0]
Indicate core status, as shown in
. Debug mode timing is
synchronous with the processor clock; status is unrelated to the
current bus transfer. The PSTCLK signal can be used by the
development system to know when to sample PST[3:0].
O
Table 2-21. Processor Status
PST[3:0]
Processor Status
0000
Continue execution
0001
Begin execution of one instruction
0010
Reserved
0011
Entry into user mode
0100
Begin execution of PULSE and WDDATA instructions
0101
Begin execution of taken branch
0110
Reserved
0111
Begin execution of RTE instruction
1000
Begin one-byte transfer on DDATA
MCF5329 Reference Manual, Rev 3
Содержание MCF5329
Страница 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 126: ...Enhanced Multiply Accumulate Unit EMAC 4 20 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 564: ...Liquid Crystal Display Controller LCDC 22 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 692: ...Programmable Interrupt Timers PIT0 PIT3 28 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 720: ...Queued Serial Peripheral Interface QSPI 30 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 790: ...Message Digest Hardware Accelerator MDHA 33 20 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 902: ...Register Memory Map Quick Reference A 26 Freescale Semiconductor MCF5329 Reference Manual Rev 3...