AT32UC3A464S Atmel Corporation, AT32UC3A464S Datasheet - Page 845

• Manufacturer Part Number: AT32UC3A464S
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A464S

• Flash (kbytes): 64 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• Hardware Qtouch Acquisition: No
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Sd / Emmc: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: AES
• Sram (kbytes): 128
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0 to 3.6
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

30.7.7
Name:
Access Type:
Offset:
Reset Value:
• BLKLEN: Data Block Length
• BCNT: MMC/SDIO Block Count - SDIO Byte Count
32072G–11/2011
TRTYP
Others
31
23
15
7
This field determines the size of the data block.
This field is also accessible in the MR register.
If MR.FBYTE bit is zero, the BLKEN[17:16] field must be written to 0b00
This field determines the number of data byte(s) or block(s) to transfer.
The transfer data type and the authorized values for BCNT field are determined by CMDR.TRTYP field:
Warning: In SDIO Byte and Block modes, writing to the seven last bits of BCNT field is forbidden and may lead to unpredictable
results.
0
2
3
Block Register
Type of Transfer
MMC/SDCard Multiple Block
SDIO Byte
SDIO Block
-
30
22
14
6
BLKR
Read/Write
0x018
0x00000000
Notes:
1. In SDIO Byte mode, BLKLEN field is not used.
2. BLKLEN should be specified before sending the data transfer command. Otherwise, Overrun
29
21
13
5
may occur (even if MR.RDPROOF bit is set).
BCNT Authorized Values
From 1 to 65535: Value 0 corresponds to an infinite block transfer.
From 1 to 512 bytes: Value 0 corresponds to a 512-byte transfer.
Values from 0x200 to 0xFFFF are forbidden.
From 1 to 511 blocks: Value 0 corresponds to an infinite block transfer.
Values from 0x200 to 0xFFFF are forbidden.
Reserved.
28
20
12
4
BLKLEN[15:8]
BLKLEN[7:0]
BCNT[15:8]
BCNT[7:0]
27
19
11
3
26
18
10
2
25
17
9
1
24
16
8
0
845