35.6 General Purpose Manchester (Full-Featured UARTs Only)

General purpose Manchester is a subset of the DALI mode. When the UxP1L register is cleared, there is no minimum wait time between frames. This allows full- and half-duplex operation because writes to the UxTXB register are not held waiting for a receive operation to complete.

General purpose Manchester operation maintains all other aspects of DALI mode as shown in Figure 35-9 such as:

Single-pulse Start bit
Most Significant bit first
No stop periods between back-to-back bytes

The general purpose Manchester mode is configured with the following settings:

MODE = ‘b1000
TXEN = 1
RXEN = 1
UxP1 = 0h
UxBRG = desired baud rate
TXPOL and RXPOL = desired Idle state
STP = desired number of stop periods
RxyPPS = TX pin selection code
TX pin TRIS control = 0
RXPPS = RX pin selection code
RX pin TRIS control = 1
Input pin ANSEL bit = 0
ON = 1

The Manchester bit stream timing is shown in Figure 35-9.

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