At91Sam9Rl Block Diagram; Microcontroller; Memory; Clock Circuitry - Atmel AT91SAM9RL-EK User Manual

Board Description
3.2

AT91SAM9RL Block Diagram

Figure 3-1. AT91SAM9RL Block Diagram
MASTER SLAVE
System Controller JTAG Selection and Boundary Scan
TST
FIQ
AIC
IRQ
DRXD DBGU
DTXD
PDC
PCK0-PCK1
Interface
ITCM DTCM
PLLA
PLLRCA
PMC
OSC
XIN
12M
XOUT
UPLL
WDT PIT
RC
4
GPBREG
OSC
XIN32
32K
XOUT32
RTT
SHDN
SHDC
RTC
WKUP
PDC
VDDBU
POR
RSTC
MCI
VDDCORE
POR
NRST
PIOA PIOB
PIOC
PIOD
3.3

Microcontroller

One AT91SAM9RL64 217-ball LFBGA fitted on board
3.4

Memory

32 Kbytes of Internal ROM
64 Kbyte of Internal SRAM
Atmel serial DataFlash
64 Mbytes of SDRAM memory (32-bit bus width)
256 Mbytes of NAND Flash memory (8-bit bus width)
TWI serial EEPROM (footprint only)
3.5

Clock Circuitry

12 MHz standard crystal for the embedded oscillator
3-4
6325A–ATARM–08-Jan-08
HS UTMI
Transceiver
In-Circuit Emulator
USB
Device
ARM926EJ-S Processor
TCM
ICache DCache
4 Kbytes 4 Kbytes
DMA
D
I
6-layer AHB Bus Matrix
SRAM
ROM
64K Bytes
32K Bytes
APB
PDC
PDC
USART0
USART1
TWI0 TWI1
USART2
USART3
LCDC
HS
DMA
Peripheral
Peripheral
DMA
Bridge
Controller
PDC PDC PDC
TC0
SSC0
TC1
SPI
AC97
PWM
SSC1
TC2
EBI
CompactFlash
NAND Flash
& ECC
SDRAM
Controller
2-channel
DMA
Static
Memory
Controller
PDC Touch
Screen
Controller
6-channel 10-bit ADC
AT91SAM9RL-EK Evaluation Board User Guide
D0-D15
A0/NBS0
A1/NBS2/NWR2
A2-A15
A16/BA0
A17/BA1
NCS0
NCS1/SDCS
NRD/CFOE
NWR0/NWE/CFWE
NWR1/NBS1/CFIOR
NWR3/NBS3/CFIOW
SDCK, SDCKE
RAS, CAS
SDWE, SDA10
NWAIT
A23-A24 A18-A20
A21/NANDALE
A22/NANDCLE
A25/CFRNW
D16-D31
NCS4/CFCS0
NCS5/CFCS1
NCS3/NANDCS
NCS2
CFCE1-CFCE2
NANDOE, NANDWE