SAM7X256_14 Datasheet, PDF (24/662 Pages) ATMEL Corporation – ARM-based Flash MCU

Figure 9-1.
System Controller Block Diagram
System Controller
jtag_nreset
Boundary Scan
TAP Controller
NRST
XIN
XOUT
PLLRC
PA0-PA30
PB0-PB30
irq0-irq1
fiq
periph_irq[2..19]
pit_irq
rtt_irq
wdt_irq
dbgu_irq
pmc_irq
rstc_irq
efc_irq
Advanced
Interrupt
Controller
int
MCK
periph_nreset
dbgu_rxd
Debug
Unit
dbgu_irq
force_ntrst
dbgu_txd
MCK
debug
periph_nreset
SLCK
power_on_reset
Periodic
Interval
Timer
Real-Time
Timer
pit_irq
rtt_irq
SLCK
debug
idle
proc_nreset
cal
gpnvm[0]
Watchdog
Timer
wdt_irq
gpnvm[1]
wdt_fault
WDRPROC
en
BOD
POR
flash_wrdis
bod_rst_en
power_on_reset
jtag_nreset
flash_poe
Reset
Controller
periph_nreset
proc_nreset
rstc_irq
Voltage
Regulator
Mode
Controller
SLCK
nirq
nfiq
proc_nreset
PCK
debug
power_on_reset
force_ntrst
security_bit
flash_poe
flash_wrdis
cal
gpnvm[0..2]
efc_irq
MCK
proc_nreset
standby
cal
ARM7TDMI
Embedded
Flash
Memory
Controller
Voltage
Regulator
RCOSC
SLCK
OSC
MAINCK
PLL
PLLCK
int
periph_nreset
usb_suspend
periph_nreset
periph_clk[2-3]
dbgu_rxd
Power
Management
Controller
periph_clk[2..18]
pck[0-3]
PCK
UDPCK
MCK
pmc_irq
idle
PIO
Controller
periph_irq{2-3]
irq0-irq1
fiq
dbgu_txd
UDPCK
periph_clk[11]
periph_nreset
periph_irq[11]
usb_suspend
USB Device
Port
periph_clk[4..19]
periph_nreset
periph_irq[4..19]
Embedded
Peripherals
in
out
enable
SAM7X Series [DATASHEET] 24
6120K–ATARM–11-Feb-14