mc3phacvp Freescale Semiconductor, Inc, mc3phacvp Datasheet - Page 27

• Manufacturer Part Number: mc3phacvp
• Description: Mc3phac Motor Control Unit
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
FUNCTIONAL
Address: $FE01
Reset
PC MASTER
FAULT BITS
SOFTWARE
POWER UP
RESET PIN
COMMAND
MC3PHAC
VOLTAGE
LOW V
RESET
W
R
Field
5–4
7
6
1
POWER
DD
UP
1
7
POWER UP Bit — This read-only bit indicates the last system reset was caused by the power-up
reset detection circuit.
0 Power-up reset was not the source of the reset or a read of the reset status register after the
1 The last reset was caused by an initial power-up of the MC3PHAC.
RESET PIN Bit — This read-only bit indicates the last system reset was caused from the RESET
input pin.
0 The RESET pin was not the source of the reset or a read of the reset status register after the
1 Last reset was caused by an external reset applied to the RESET input pin.
MC3PHAC FUNCTIONAL FAULT Bits — This read-only bit indicates if the last system reset was
the result of an internal system error.
0 The FUNCTIONAL FAULT was not the source of the reset or a read of the reset status register
1 MC3PHAC internal system error
PC MASTER SOFTWARE RESET COMMAND Bit — This read-only bit indicates the last system
reset was the result of a PC master software reset command.
0 The PC master software RESET COMMAND was not the source of the reset or a read of the
1 The MC3PHAC was reset by the PC master software command reset as the result of a write
LOW V
applied to the MC3PHAC.
0 The LOW V
1 The last reset was caused by the low power supply detection circuit.
first read.
first read.
after the first read.
reset status register after the first read.
of $30 to location $1000
first read.
= Unimplemented or Reserved
RESET
DD
PIN
0
6
Table 10. Reset Status Register Field Descriptions
VOLTAGE Bit — This read-only bit indicates if the last reset was the result of low V
MC3PHAC Monolithic Intelligent Motor Controller, Rev. 2
DD
FUNCTIONAL
was not the source of the reset or a read of the reset status register after the
MC3PHAC
FAULT
Figure 17. Reset Status Register
5
0
FUNCTIONAL
MC3PHAC
FAULT
4
0
Description
PC MASTER
SOFTWARE
COMMAND
RESET
0
3
0
2
VOLTAGE
LOW V
1
0
DD
Operation
0
0
DD
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