ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 616
ATSAM3U-EK
Manufacturer Part Number
ATSAM3U-EK
Description
KIT EVAL FOR AT91SAM3U CORTEX
Manufacturer
Atmel
Type
MCUr
Datasheets
1.ATSAM3U-EK.pdf
(2 pages)
2.ATSAM3U-EK.pdf
(61 pages)
3.ATSAM3U-EK.pdf
(1171 pages)
4.ATSAM3U-EK.pdf
(53 pages)
Specifications of ATSAM3U-EK
Contents
Board
Processor To Be Evaluated
SAM3U
Data Bus Width
32 bit
Interface Type
RS-232, USB
Operating Supply Voltage
3 V
Silicon Manufacturer
Atmel
Core Architecture
ARM
Core Sub-architecture
Cortex - M3
Silicon Core Number
SAM3U4E
Silicon Family Name
SAM3U
Kit Contents
Board CD Docs
Rohs Compliant
Yes
For Use With/related Products
AT91SAM3U
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATSAM3U-EK
Manufacturer:
Atmel
Quantity:
10
- ATSAM3U-EK PDF datasheet
- ATSAM3U-EK PDF datasheet #2
- ATSAM3U-EK PDF datasheet #3
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32.8.9
Name:
Address:
Access:
Note:
• CPOL: Clock Polarity
0 = The inactive state value of SPCK is logic level zero.
1 = The inactive state value of SPCK is logic level one.
CPOL is used to determine the inactive state value of the serial clock (SPCK). It is used with NCPHA to produce the
required clock/data relationship between master and slave devices.
• NCPHA: Clock Phase
0 = Data is changed on the leading edge of SPCK and captured on the following edge of SPCK.
1 = Data is captured on the leading edge of SPCK and changed on the following edge of SPCK.
NCPHA determines which edge of SPCK causes data to change and which edge causes data to be captured. NCPHA is
used with CPOL to produce the required clock/data relationship between master and slave devices.
• CSNAAT: Chip Select Not Active After Transfer (Ignored if CSAAT = 1)
0 = The Peripheral Chip Select does not rise between two transfers if the SPI_TDR is reloaded before the end of the first
transfer and if the two transfers occur on the same Chip Select.
1 = The Peripheral Chip Select rises systematically between each transfer performed on the same slave for a minimal dura-
tion of:
• CSAAT: Chip Select Active After Transfer
0 = The Peripheral Chip Select Line rises as soon as the last transfer is achieved.
1 = The Peripheral Chip Select does not rise after the last transfer is achieved. It remains active until a new transfer is
requested on a different chip select.
616
616
–
–
31
23
15
7
DLYBCS
-------------------------------- -
DLYBCS
---------------------- -
SPI_CSRx registers must be written even if the user wants to use the defaults. The BITS field will not be updated with the trans-
lated value unless the register is written.
MCK
SAM3U Series
SAM3U Series
SPI Chip Select Register
MCK
+
(if DLYBCT field is different from 0)
1
(if DLYBCT field equal 0)
30
22
14
SPI_CSRx[x=0..3]
0x40008030
Read/Write
6
BITS
29
21
13
5
28
20
12
4
DLYBCT
DLYBS
SCBR
CSAAT
27
19
11
3
CSNAAT
26
18
10
2
NCPHA
25
17
9
1
6430D–ATARM–25-Mar-11
6430D–ATARM–25-Mar-11
CPOL
24
16
8
0
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