SAM3N0A Atmel Corporation, SAM3N0A Datasheet - Page 562

• Manufacturer Part Number: SAM3N0A
• Manufacturer: Atmel Corporation

• SYNC: Synchronous Mode Select
0: USART operates in Asynchronous Mode.
1: USART operates in Synchronous Mode.
• CPHA: SPI Clock Phase
CPHA = 0: Data is changed on the leading edge of SPCK and captured on the following edge of SPCK.
CPHA = 1: Data is captured on the leading edge of SPCK and changed on the following edge of SPCK.
CPHA determines which edge of SPCK causes data to change and which edge causes data to be captured. CPHA is used
with CPOL to produce the required clock/data relationship between master and slave devices.
• PAR: Parity Type
• NBSTOP: Number of Stop Bits
• CHMODE: Channel Mode
• MSBF: Bit Order
0: Least Significant Bit is sent/received first.
1: Most Significant Bit is sent/received first.
• CPOL: SPI Clock Polarity
CPOL = 0: The inactive state value of SPCK is logic level zero.
CPOL = 1: The inactive state value of SPCK is logic level one.
11011A–ATARM–04-Oct-10
11011A–ATARM–04-Oct-10
Value
0
1
2
3
– Applicable if USART operates in SPI Mode (USART_MODE = 0xE or 0xF):
– Applicable if USART operates in SPI Mode (Slave or Master, USART_MODE = 0xE or 0xF):
Value
Value
0
1
2
0
1
2
3
4
6
REMOTE_LOOPBACK
LOCAL_LOOPBACK
AUTOMATIC
MULTIDROP
NORMAL
1_5_BIT
Name
Name
1_BIT
2_BIT
SPACE
MARK
Name
EVEN
ODD
NO
Description
1 stop bit
1.5 stop bit (SYNC = 0) or reserved (SYNC = 1)
2 stop bits
Description
Even parity
Odd parity
Parity forced to 0 (Space)
Parity forced to 1 (Mark)
No parity
Multidrop mode
Description
Normal Mode
Automatic Echo. Receiver input is connected to the TXD pin.
Local Loopback. Transmitter output is connected to the Receiver Input.
Remote Loopback. RXD pin is internally connected to the TXD pin.
SAM3N
SAM3N
562
562