AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 171

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

Table 20-10. Shared CompactFlash Interface Multiplexing
Figure 20-7. CompactFlash Application Example
6438F–ATARM–21-Jun-10
Pins
NRD/CFOE
NWR0/NWE/CFWE
NWR1/NBS1/CFIOR
NWR3/NBS3/CFIOW
A25/CFRNW
Application Example
NWR1/CFIOR
NWR3/CFIOW
NCS4/CFCS0
A25/CFRNW
Figure 20-7 on page 171
CFRNW signals are not directly connected to the CompactFlash slot 0, but do control the direc-
tion and the output enable of the buffers between the EBI and the CompactFlash Device. The
timing of the CFCS0 signal is identical to the NCS4 signal. Moreover, the CFRNW signal
remains valid throughout the transfer, as does the address bus. The CompactFlash _WAIT sig-
nal is connected to the NWAIT input of the Static Memory Controller. For details on these
waveforms and timings, refer to the Static Memory Controller Section.
NWE/CFWE
EBI
NOE/CFOE
A22/REG
CD (PIO)
D[15:0]
CFCE1
CFCE2
NWAIT
A[10:0]
Access to CompactFlash Device
CompactFlash Signals
CFOE
CFWE
CFIOR
CFIOW
CFRNW
illustrates an example of a CompactFlash application. CFCS0 and
DIR
/OE
/OE
Access to Other EBI Devices
EBI Signals
NRD
NWR0/NWE
NWR1/NBS1
NWR3/NBS3
A25
CompactFlash Connector
D[15:0]
_CD1
_CD2
A[10:0]
_REG
_OE
_WE
_IORD
_IOWR
_CE1
_CE2
_WAIT
AT91SAM9G45
171