Datasheet

SCIx_BDH field descriptions
Field Description
7
LBKDIE
LIN Break Detect Interrupt Enable (for LBKDIF)
0 Hardware interrupts from SCI_S2[LBKDIF] disabled (use polling).
1 Hardware interrupt requested when SCI_S2[LBKDIF] flag is 1.
6
RXEDGIE
RxD Input Active Edge Interrupt Enable (for RXEDGIF)
0 Hardware interrupts from SCI_S2[RXEDGIF] disabled (use polling).
1 Hardware interrupt requested when SCI_S2[RXEDGIF] flag is 1.
5
SBNS
Stop Bit Number Select
SBNS determines whether data characters are one or two stop bits.
NOTE: For SCI2, this field is masked.
0 One stop bit.
1 Two stop bit.
4–0
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 SCI
baud rate generator. When BR is cleared, the SCI baud rate generator is disabled to reduce supply
current. When BR is 1 - 8191, the SCI baud rate equals BUSCLK/(16×BR).
15.2.2 SCI Baud Rate Register: Low (SCIx_BDL)
This register, along with SCI_BDH, control the prescale divisor for SCI baud rate
generation. To update the 13-bit baud rate setting [SBR12:SBR0], first write to
SCI_BDH to buffer the high half of the new value and then write to SCI_BDL. The
working value in SCI_BDH does not change until SCI_BDL is written.
SCI_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, SCI_C2[RE] or
SCI_C2[TE] bits are written to 1.
Address: Base address + 1h offset
Bit 7 6 5 4 3 2 1 0
Read
SBR
Write
Reset
0 0 0 0 0 1 0 0
SCIx_BDL field descriptions
Field Description
7–0
SBR
Baud Rate Modulo Divisor
These 13 bits in SBR[12:0] are referred to collectively as BR. They set the modulo divide rate for the SCI
baud rate generator. When BR is cleared, the SCI baud rate generator is disabled to reduce supply
current. When BR is 1 - 8191, the SCI baud rate equals BUSCLK/(16×BR).
Chapter 15 Serial communications interface (SCI)
MC9S08PA60 Reference Manual, Rev. 1, 9/2012
Freescale Semiconductor, Inc. 407