Datasheet

646
32117D–AVR-01/12
AT32UC3C
25.7.15 Manchester Configuration Register
Name: MAN
Access Type: Read-write
Offset: 0x50
Reset Value: 0x30011004
This register can only be written if the WPEN bit is cleared in the Write Protect Mode Register (if exists).
•
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.
• 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.
• RX_PP: Receiver Preamble Pattern detected
• 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
• 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.
31 30 29 28 27 26 25 24
– DRIFT 1 RX_MPOL – – RX_PP
23 22 21 20 19 18 17 16
–––– RX_PL
15 14 13 12 11 10 9 8
– – – TX_MPOL – – TX_PP
76543210
–––– TX_PL
Table 25-24.
RX_PP Preamble Pattern default polarity assumed (RX_MPOL field not set)
0 0 ALL_ONE
0 1 ALL_ZERO
10ZERO_ONE
11ONE_ZERO