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Cypress FM4 Series - Configuration

Cypress FM4 Series
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CHAPTER 4: Resets
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 161
2. Configuration
This section explains configuration of reset circuit.
Block Diagram of Resets
Figure 2-1 Block Diagram of Resets
Reset
generator
SW-WDG
HW-WDG
CSV
INITX
LVDH
PONR
TRSTX
PORESETn
SYSRESETn
nTRST
SQ-WDG reset
HW-WDG reset
Clock failure detection reset
Anomalous frequency detection reset
HRESET
SYSRESETREQ
Cortex-M4F
SYSRESETREQ
SYSRESETn
PRESET0
PRESET1
PRESET2
Reg
Reg
Deep
standby
control block
DSTR
PONR : Power-on reset
INITX : INITX pin input reset
LVDH : Low-voltage detection reset
TRSTX : TRSTX pin input reset
HRESET : AHB bus reset (a bus reset issued by all reset factors)
PRESET0, 1, 2 : APB0, APB1, APB2 bus resets (bus resets issued by all reset factors)
SW-WDG reset : Software watchdog reset
HW-WDG reset : Hardware watchdog reset
CSV reset : Clock failure detection reset
FCS reset : Anomalous frequency detection reset
PORESETn : Power-on reset that is input to Cortex-M4F
SYSRESETn : System reset that is input to Cortex-M4F
SYSRESETREQ : "SYSRESETREQ bit" signal of Cortex-M4F internal reset control register
nTRST : SWJ-DP reset
DSTR : Deep standby transition reset

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