Reset
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
7-7
7.5
Reset Configuration
7.5.1
Hard Reset Configuration
When a hard reset event occurs, the MPC561/MPC563 reconfigures its hardware system as well as the
development port configuration. The logical value of the bits that determine its initial mode of operation,
are sampled from the following:
•
The external data bus pins DATA[0:31]
•
An internal default constant (0x0000 0000)
•
An internal NVM register value (UC3FCFIG). Available on the MPC563/MPC564 only.
If at the sampling time RSTCONF is asserted, then the configuration is sampled from the external data
bus. If RSTCONF is negated and a valid NVM value exists (UC3FCFIG[HC]=0), then the configuration
is sampled from the NVM register in the UC3F module. If RSTCONF is negated and no valid NVM value
exists (UC3FCFIG[HC]=1), then the configuration word is sampled from the internal default (all zeros).
HC will be “1” if the internal Flash is erased.
summarizes the reset configuration options.
If the PRDS control bit in the PDMCR register is cleared and HRESET and RSTCONF are asserted, the
MPC561/MPC563 pulls the data bus low with a weak resistor. The user can overwrite this default by
driving the appropriate bit high. See
for the basic reset configuration scheme.
Table 7-4. Reset Configuration Options
RSTCONF
Has Configuration (HC)
Internal Configuration Word
0
x
DATA[0:31] pins
1
0
NVM Flash EEPROM register (UC3FCFIG)
1
1
Internal data word default (0x0000 0000)
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...