UARTx_BDH field descriptions (continued)
Field
Description
0
Hardware interrupts from UART_S2[LBKDIF] disabled (use polling).
1
Hardware interrupt requested when UART_S2[LBKDIF] flag is 1.
6
RXEDGIE
RxD Input Active Edge Interrupt Enable (for RXEDGIF)
0
Hardware interrupts from UART_S2[RXEDGIF] disabled (use polling).
1
Hardware interrupt requested when UART_S2[RXEDGIF] flag is 1.
5
SBNS
Stop Bit Number Select
SBNS determines whether data characters are one or two stop bits.
0
One stop bit.
1
Two stop bit.
SBR
Baud Rate Modulo Divisor.
The 13 bits in SBR[12:0] are referred to collectively as BR, and they set the modulo divide rate for the
UART baud rate generator. When BR is cleared, the UART baud rate generator is disabled to reduce
supply current. When BR is 1 - 8191, the UART baud rate equals BUSCLK/(16×BR).
33.3.2 UART Baud Rate Register: Low (UARTx_BDL)
This register, along with UART_BDH, control the prescale divisor for UART baud rate
generation. To update the 13-bit baud rate setting [SBR12:SBR0], first write to
UART_BDH to buffer the high half of the new value and then write to UART_BDL. The
working value in UART_BDH does not change until UART_BDL is written.
UART_BDL is reset to a non-zero value, so after reset, the baud rate generator remains
disabled until the first time the receiver or transmitter is enabled; that is, 1 is written to
UART_C2[RE] or UART_C2[TE].
Address: Base a 1h offset
Bit
7
6
5
4
3
2
1
0
Read
Write
Reset
0
0
0
0
0
1
0
0
UARTx_BDL field descriptions
Field
Description
SBR
Baud Rate Modulo Divisor
These 13 bits in SBR[12:0] are referred to collectively as BR, which set the modulo divide rate for the
UART baud rate generator. When BR is cleared, the UART baud rate generator is disabled to reduce
supply current. When BR is 1 - 8191, the UART baud rate equals BUSCLK/(16×BR).
Register definition
MKW01Z128 MCU Reference Manual, Rev. 3, 04/2016
650
Freescale Semiconductor, Inc.
Содержание MKW01Z128
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