mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 1096

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

Functional description
43.4.1 Transmitter
43.4.1.1 Transmitter character length
The UART transmitter can accommodate either 8, 9, or 10-bit data characters. The state
of the C1[M] and C1[PE] bits and the C4[M10] bit determine the length of data
characters. When transmitting 9-bit data, bit C3[T8] is the ninth bit (bit 8).
1096
MODULE
SBR12:0
CLOCK
PE
PT
BAUDRATE GENERATE
GENERATION
PARITY
BRFA4:0
TXINV
MSBF
IRQ / DMA
LOGIC
M10
M
Figure 43-91. Transmitter Block Diagram
MCF51JF128 Reference Manual, Rev. 2, 03/2011
VARIABLE 12-BIT TRANSMIT
SHIFT REGISTER
UART DATA REGISTER (UART_D)
Preliminary
SHIFT DIRECTION
7816 LOGIC
INTERNAL BUS
TRANSMITTER CONTROL
LOOP
CONTROL
TXDIR
SBK
TE
IRQ Requests
DMA Requests
R485 CONTROL
Freescale Semiconductor, Inc.
DMA Done
TxD
TxD Pin Control
Tx port en
Tx output buffer en
Tx input buffer en
LOOPS
RSRC
TxD
RTS_B
CTS_B