SAM9XE256 Atmel Corporation, SAM9XE256 Datasheet - Page 312

• Manufacturer Part Number: SAM9XE256
• Manufacturer: Atmel Corporation

Specifications of SAM9XE256

• Flash (kbytes): 256 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

26.4.7
Register Name:
Access Type:
• TXNPTR: Transmit Next Pointer
TXNPTR contains next transmit buffer address.
When a half duplex peripheral is connected to the PDC, RXNPTR = TXNPTR.
26.4.8
Register Name:
Access Type:
• TXNCTR: Transmit Counter Next
TXNCTR contains next transmit buffer size.
When a half duplex peripheral is connected to the PDC, RXNCTR = TXNCTR.
6254C–ATARM–22-Jan-10
31
23
15
31
23
15
7
–
–
7
Transmit Next Pointer Register
Transmit Next Counter Register
30
22
14
30
22
14
PERIPH_TNPR
Read-write
6
PERIPH_TNCR
Read-write
–
–
6
29
21
13
29
21
13
5
–
–
5
AT91SAM9XE128/256/512 Preliminary
28
20
12
28
20
12
4
–
–
4
TXNCTR
TXNCTR
TXNPTR
TXNPTR
TXNPTR
TXNPTR
27
19
11
27
19
11
3
–
–
3
26
18
10
26
18
10
2
–
–
2
25
17
25
17
9
1
–
–
9
1
24
16
24
16
8
0
–
–
8
0
312