Datasheet

SAM9261 [DATASHEET]
Atmel-6062O-ATARM-SAM9261-Datasheet_21-Jun-16
24
8.1 Block Diagram
Figure 8-1. System Controller Block Diagram
NRST
SLCK
Advanced
Interrupt
Controller
Real-Time
Timer
Periodic
Interval
Timer
Reset
Controller
PA0–PA31
periph_nreset
System Controller
Watchdog
Timer
wdt_fault
WDRPROC
PIO
Controllers
Power
Management
Controller
XIN
XOUT
PLLRCA
MAINCK
PLLACK
pit_irq
MCK
proc_nreset
wdt_irq
periph_irq{2..4]
periph_nreset
periph_clk[2..21]
PCK
MCK
pmc_irq
UDPCK
nirq
nfiq
rtt_irq
Embedded
Peripherals
periph_clk[2..4]
pck[0–3]
in
out
enable
ARM926EJ-S
SLCK
SLCK
irq0–irq2
fiq
irq0–irq2
fiq
periph_irq[6..21]
periph_irq[2..21]
int
int
periph_nreset
periph_clk[6..21]
jtag_nreset
ice_nreset
proc_nreset
periph_nreset
dbgu_txd
dbgu_rxd
pit_irq
rtt_irq
dbgu_irq
pmc_irq
rstc_irq
wdt_irq
rstc_irq
SLCK
Boundary Scan
TAP Controller
jtag_nreset
debug
PCK
debug
idle
debug
Bus Matrix
MCK
periph_nreset
proc_nreset
backup_nreset
periph_nreset
idle
Debug Unit
dbgu_irq
MCK
dbgu_rxd
periph_nreset
force_ntrst
dbgu_txd
USB Device
Port
UDPCK
periph_nreset
periph_clk[10]
periph_irq[10]
usb_suspend
usb_suspend
rtt_alarm
Shutdown
Controller
SLCK
rtt_alarm
backup_nreset
SHDN
WKUP
4 General-purpose
Backup Registers
backup_nreset
XIN32
XOUT32
LCDCK
PLLRCB
PLLBCK
UHPCK
PB0–PB31
PC0–PC31
USB Host
Port
UHPCK
periph_nreset
periph_clk[20]
periph_irq[20]
LCD
Controller
LCDCK
periph_nreset
periph_clk[21]
periph_irq[21]
VDDBU Powered
VDDCORE Powered
force_ntrst
ntrst
VDDCORE
POR
MAIN
OSC
PLLA
VDDBU
POR
SLOW
CLOCK
OSC
PLLB
ice_nreset