AT91SAM9G20-CU View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
AT91SAM9G20-CU Datasheet PDF : 42 Pages
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9.1 System Controller Block Diagram
Figure 9-1. AT91SAM9G20 System Controller Block Diagram
NRST
VDDBU
irq0-irq2
fiq
periph_irq[2..24]
pit_irq
rtt_irq
wdt_irq
dbgu_irq
pmc_irq
rstc_irq
MCK
periph_nreset
dbgu_rxd
MCK
debug
periph_nreset
SLCK
debug
idle
proc_nreset
VDDCORE
POR
por_ntrst
jtag_nreset
VDDBU
POR SLCK
System Controller
Advanced
Interrupt
Controller
VDDCORE Powered
int
por_ntrst
Debug
Unit
Periodic
Interval
Timer
dbgu_irq
dbgu_txd
pit_irq
Watchdog
Timer
wdt_irq
wdt_fault
WDRPROC
Reset
Controller
rstc_irq
periph_nreset
proc_nreset
backup_nreset
VDDBU Powered
nirq
nfiq
ntrst
proc_nreset
PCK
debug
jtag_nreset
MCK
periph_nreset
UHPCK
periph_clk[20]
periph_nreset
periph_irq[20]
ARM926EJ-S
Boundary Scan
TAP Controller
Bus Matrix
USB Host
Port
SHDN
WKUP
OSCSEL
XIN32
XOUT32
XIN
XOUT
SLCK
backup_nreset
SLCK
RC
OSC
SLOW
CLOCK
OSC
MAIN
OSC
backup_nreset
rtt0_alarm
SLCK
int
MAINCK
PLLA
PLLACK
PLLB
PLLBCK
Real-Time
Timer
Shut-Down
Controller
Power
Management
Controller
rtt_irq
rtt_alarm
4 General-Purpose
Backup Registers
periph_clk[2..27]
pck[0-1]
PCK
UDPCK
UHPCK
MCK
UDPCK
periph_clk[10]
periph_nreset
periph_irq[10]
USB
Device
Port
PA0-PA31
PB0-PB31
PC0-PC31
periph_nreset
periph_nreset
periph_clk[2..4]
dbgu_rxd
PIO
Controllers
pmc_irq
idle
periph_irq[2..4]
irq0-irq2
fiq
dbgu_txd
periph_clk[6..24]
periph_nreset
periph_irq[6..24]
in
out
enable
Embedded
Peripherals
24 AT91SAM9G20 Summary
6384CS–ATARM–11-Mar-09
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