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SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
• RX_PP: Receiver Preamble Pattern detected
The following values assume that RX_MPOL field is not set:
• RX_MPOL: Receiver Manchester Polarity
0: Logic Zero is coded as a zero-to-one transition, Logic One is coded as a one-to-zero transition.
1: Logic Zero is coded as a one-to-zero transition, Logic One is coded as a zero-to-one transition.
• ONE: Must Be Set to 1
Bit 29 must always be set to 1 when programming the US_MAN register.
• DRIFT: Drift Compensation
0: The USART can not recover from an important clock drift
1: The USART can recover from clock drift. The 16X clock mode must be enabled.
Value
Name
Description
00
ALL_ONE
The preamble is composed of ‘1’s
01
ALL_ZERO
The preamble is composed of ‘0’s
10
ZERO_ONE
The preamble is composed of ‘01’s
11
ONE_ZERO
The preamble is composed of ‘10’s