SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 198

• Manufacturer Part Number: SAM9XE512
• Manufacturer: Atmel Corporation

Specifications of SAM9XE512

• Flash (kbytes): 512 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 180 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 6
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 312
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.65 to 1.95
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Instruction Cycle Times
8.22
8-38
Cycle
1 register
ready
1 register
not ready
Load coprocessor register (from memory)
1
1
.
n
n+1
IA
pc+3i
pc+3i
pc+3i
pc+3i
pc+3i
The load coprocessor (
to a coprocessor.
The coprocessor commits to the transfer only when it is ready to accept the data. The
coprocessor indicates that it is ready for the transfer to commence by driving CHSD or
CHSE to GO. The ARM9E-S produces addresses and requests data memory reads on
behalf of the coprocessor, which is expected to accept the data at sequential rates. The
coprocessor is responsible for determining the number of words to be transferred. It
indicates this using the CHSD and CHSE signals, setting the appropriate signal to
LAST in the cycle before it is ready to initiate the transfer of the last data word.
An interrupt can cause the ARM9E-S to abandon a busy-waiting coprocessor
instruction (see Busy-waiting and interrupts on page 6-17).
Coprocessor operations are only available in ARM state.
The load coprocessor register cycle timings are shown in Table 8-29.
IREQ
S cycle
I cycle
I cycle
I cycle
S cycle
Note
Copyright © 2000 ARM Limited. All rights reserved.
a
INSTR
(pc+2i)
(pc+3i)
(pc+2i)
-
-
(pc+3i)
-
LDC
) operation transfers one or more words of data from memory
DA
da
-
-
-
da
Table 8-29 Load coprocessor register cycle timing
DREQ
I cycle
I cycle
N cycle
I cycle
N cycle
b
RDATA
(da)
-
-
(da)
-
P
1
1
1
1
1
c
LC
0
0
0
0
0
d
CHSD
LAST
WAIT
ARM DDI 0165B
CHS
E
-
WAIT
WAIT
LAST
-