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DSP56857 데이터시트(PDF) 171 Page - Freescale Semiconductor, Inc

부품명 DSP56857
상세설명  Digitial Signal Controller
PDF  662 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

DSP56857 데이터시트(HTML) 171 Page - Freescale Semiconductor, Inc

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Features
Power-On Reset (POR) and Computer Operating Properly (COP), Rev. 4
Freescale Semiconductor
7-3
7.1 Introduction
The Power-on Reset (POR) function monitors the core power supply, the I/O, and analog power
supply. If either of those power supplies are below their thresholds, the POR output for each
respective supply is held high. Once the power supply goes above the thresholds, the POR
outputs are held low.
Computer Operating Properly (COP) is also discussed in this chapter as it relates to resets.
7.2 Features
•
The circuit monitors both the core power supply and peripheral power supply
•
Holds a wide chip reset once either of these supply voltages are below the thresholds
•
Generates the address of the Reset Vector provided to the core after exit Reset
•
The address of Reset Vector (same as the COP Reset) is located at $1F0000
The COP module design features include:
•
Programmable time-out period = (COP_PRESCALER
× (CT + 1)) oscillator clock cycles,
where CT can be from $0000 to $FFFF
•
Programmable Wait and Stop mode operations
•
COP timer is disabled while host CPU is in Debug mode



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