at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 513
at91sam9g20-cu
Manufacturer Part Number
at91sam9g20-cu
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9G20-CU.pdf
(814 pages)
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32.7.15
Name:
Access Type:
• TX_PL: Transmitter Preamble Length
0: The Transmitter Preamble pattern generation is disabled
1 - 15: The Preamble Length is TX_PL x Bit Period
• TX_PP: Transmitter Preamble Pattern
• TX_MPOL: Transmitter 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.
• RX_PL: Receiver Preamble Length
0: The receiver preamble pattern detection is disabled
1 - 15: The detected preamble length is RX_PL x Bit Period
• RX_PP: Receiver Preamble Pattern detected
6384B–ATARM–15-Dec-08
31
23
15
–
–
–
7
–
0
0
1
1
0
0
1
1
USART Manchester Configuration Register
RX_PP
TX_PP
DRIFT
30
22
14
US_MAN
Read-write
–
–
6
–
0
1
0
1
0
1
0
1
Preamble Pattern default polarity assumed (TX_MPOL field not set)
Preamble Pattern default polarity assumed (RX_MPOL field not set)
ALL_ONE
ALL_ZERO
ZERO_ONE
ONE_ZERO
ALL_ONE
ALL_ZERO
ZERO_ONE
ONE_ZERO
29
21
13
1
–
–
5
–
RX_MPOL
TX_MPOL
28
20
12
–
4
–
27
19
11
–
–
3
AT91SAM9G20 Preliminary
26
18
10
–
–
2
RX_PL
TX_PL
25
17
9
1
RX_PP
TX_PP
24
16
8
0
513
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