Atmel Evaluation Kit AT91SAM9G20-EK AT91SAM9G20-EK Data Sheet
Product codes
AT91SAM9G20-EK
Board Description
3-4
AT91SAM9G20-EK Evaluation Board User Guide
6413C–ATARM–18-Feb-09
3.2
AT91SAM9G20 Block Diagram
Figure 3-1.
Block Diagram
ARM926EJ-S Processor
JT
A
G
Selection and Boundar
y Scan
In-Circuit Em
ulator
AIC
F
ast SRAM
16 Kb
ytes
D0-D15
A0/NBS0
A2-A15, A18-A20
A16/BA0
A17/BA1
NCS0
NCS1/SDCS
NRD/CFOE
NWR0/NWE/CFWE
NWR1/NBS1/CFIOR
NWR3/NBS3/CFIO
W
SDCK, SDCKE
RAS
, CAS
SD
WE, SD
A10
FIQ
IRQ0-IRQ2
DRXD
DTXD
MMU
APB
RO
M
64 Kb
ytes
P
e
ripher
al
Br
idge
24-channel
P
e
ripher
al
DMA
Bus Interf
ace
A1/NBS2/NWR2
TST
PCK0-PCK1
System
Controller
XIN
TDI
TDO
TMS
TCK
JT
AGSEL
ID
NANDOE, NAND
WE
PMC
OSC
XOUT
PIT
WDT
DBGU
SLA
VE
MASTER
PDC
BMS
A23-A24
NCS5/CFCS1
A25/CFRNW
NCS4/CFCS0
NW
AIT
CFCE1-CFCE2
EBI
Static
Memor
y
Controller
CompactFlash
NAND Flash
SDRAM
Controller
NCS2, NCS6, NCS7
NCS3/NANDCS
R
TCK
ECC
Controller
ETXCK-ERXCK
ETXEN-ETXER
ECRS-ECOL
ERXER-ERXD
V
ERX0-ERX3
ETX0-ETX3
MDC
MDIO
F100
10/100 Ether
net
MA
C
FIFO
DMA
FIFO
SSC
PDC
USB
De
vice
DDM
DDP
TK
TF
TD
RD
RF
RK
TC0
TC1
TC2
TCLK0-TCLK2
TIO
A0-TIO
A2
TIOB0-TIOB2
SPI0
SPI1
PDC
USAR
T0
USAR
T1
USAR
T2
USAR
T3
USAR
T4
USAR
T5
R
TS0-R
TS3
SCK0-SCK2
TXD0-TXD5
RXD0-RXD5
CTS0-CTS3
PDC
TWI
TWCK
TWD
MCI
PDC
T
ransceiv
er
DPRAM
ICache
32K b
ytes
DCache
32K b
ytes
6-la
y
er Matr
ix
6 x 100M x 32-bit w
ords
NPCS2
NPCS1
SPCK
MOSI
MISO
NPCS0
NPCS3
SPI0_, SPI1_
MCCK
MCD
A0-MCD
A3
MCCD
A
NRST
XIN32
XOUT32
VDDCORE
PIO
A
PIOB
PIOC
DSR0
DCD0
DTR0
RI0
USB
OHCI
DMA
T
ransc.
T
ransc.
HDP
A
HDMA
HDPB
HDMB
Image
Sensor
Interf
ace
DMA
ISI_PCK
ISI_DO-ISI_D7
ISI_HSYNC
ISI_VSYNC
ISI_MCK
4-channel
10-bit
ADC
AD0-AD3
ADTRIG
AD
VREF
VDD
ANA
GND
ANA
PDC
D16-D31
RT
T
OSC
RSTC
POR
4GPREG
SHDN
WKUP
SHDC
POR
RC
OSCSEL
VDDB
U
MCDB0-MCDB3
MCCDB
TC3
TC4
TC5
TCLK3-TCLK5
TIO
A3-TIO
A5
TIOB3-TIOB5
F
ast SRAM
16 Kb
ytes
PDC
A21/NAND
ALE, A22/NANDCLE
PLLA
Filter
Filter
PLLB