mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 1119

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

43.4.4.3.4 Nine-bit format with parity enabled
43.4.4.3.5 Non-memory mapped tenth bit for parity
The most significant memory-mapped bit can be used for address mark wakeup.
43.4.5 Single-wire operation
Normally, the UART uses two pins for transmitting and receiving. In single-wire
operation, the RXD pin is disconnected from the UART and the UART implements a
half-duplex serial connection. The UART uses the TXD pin for both receiving and
transmitting.
Freescale Semiconductor, Inc.
Figure 43-114. Single-wire operation (C1[LOOPS] = 1, C1[RSRC] = 1)
START
START
BIT
BIT
START
START
START
ADDRESS
BIT
BIT
BIT
Figure 43-111. Eight bits of data with MSB first and parity
Figure 43-110. Eight bits of data with LSB first and parity
Figure 43-113. Nine bits of data with MSB first and parity
MARK
Figure 43-112. Nine bits of data with LSB first and parity
BIT 0
BIT 8
ADDRESS
MARK
BIT 8
BIT 0
BIT 7
Figure 43-109. Nine bits of data with MSB first
BIT 1
BIT 7
MCF51JF128 Reference Manual, Rev. 2, 03/2011
BIT 7
BIT 1
BIT 6
TRANSMITTER
BIT 2
BIT 6
RECEIVER
BIT 6
BIT 2
BIT 5
BIT 3
BIT 5
TXINV
BIT 5
BIT 3
BIT 4
BIT 4
BIT 4
Chapter 43 Universal Asynchronous Receiver/Transmitter (UART)
Preliminary
BIT 4
BIT 4
BIT 3
RXINV
BIT 5
BIT 3
BIT 3
BIT 5
BIT 2
BIT 6
BIT 2
BIT 2
BIT 6
BIT 1
BIT 7
BIT 1
Tx pin input
Tx pin output
BIT 1
BIT 7 PARITY STOP
BIT 0 PARITY STOP
ADDRESS
RXD
MARK
BIT 8 PARITY STOP
BIT 0 PARITY STOP
BIT 0 STOP
BIT
BIT
BIT
BIT
BIT
START
START
START
BIT
BIT
BIT
START
START
BIT
BIT
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