Sci Status Register 2 (Scixs2) - ROHS MC9S08QE128 Reference Manual

Serial Communications Interface (S08SCIV4)
Field
1 Framing Error Flag — FE is set at the same time as RDRF when the receiver detects a logic 0 where the stop
FE bit was expected. This suggests the receiver was not properly aligned to a character frame. To clear FE, read
SCIxS1 with FE = 1 and then read the SCI data register (SCIxD).
0 No framing error detected. This does not guarantee the framing is correct.
1 Framing error.
0 Parity Error Flag — PF is set at the same time as RDRF when parity is enabled (PE = 1) and the parity bit in
PF the received character does not agree with the expected parity value. To clear PF, read SCIxS1 and then read
the SCI data register (SCIxD).
0 No parity error.
1 Parity error.
14.2.5

SCI Status Register 2 (SCIxS2)

This register has one read-only status flag.
7
R
LBKDIF RXEDGIF
W
Reset 0
= Unimplemented or Reserved
Field
7 LIN Break Detect Interrupt Flag — LBKDIF is set when the LIN break detect circuitry is enabled and a LIN break
LBKDIF character is detected. LBKDIF is cleared by writing a "1" to it.
0 No LIN break character has been detected.
1 LIN break character has been detected.
6 RxD Pin Active Edge Interrupt Flag — RXEDGIF is set when an active edge (falling if RXINV = 0, rising if
RXEDGIF RXINV=1) on the RxD pin occurs. RXEDGIF is cleared by writing a "1" to it.
0 No active edge on the receive pin has occurred.
1 An active edge on the receive pin has occurred.
4 Receive Data Inversion — Setting this bit reverses the polarity of the received data input.
1
RXINV 0 Receive data not inverted
1 Receive data inverted
3 Receive Wake Up Idle Detect— RWUID controls whether the idle character that wakes up the receiver sets the
RWUID IDLE bit.
0 During receive standby state (RWU = 1), the IDLE bit does not get set upon detection of an idle character.
1 During receive standby state (RWU = 1), the IDLE bit gets set upon detection of an idle character.
2 Break Character Generation Length — BRK13 is used to select a longer transmitted break character length.
BRK13 Detection of a framing error is not affected by the state of this bit.
0 Break character is transmitted with length of 10 bit times (11 if M = 1)
1 Break character is transmitted with length of 13 bit times (14 if M = 1)
258
Table 14-5. SCIxS1 Field Descriptions (continued)
6 5
0
RXINV
0 0
Figure 14-10. SCI Status Register 2 (SCIxS2)
Table 14-6. SCIxS2 Field Descriptions
MC9S08QE128 MCU Series Reference Manual, Rev. 2
Description
4 3
RWUID BRK13
0 0
Description
2 1
LBKDE
0 0
Freescale Semiconductor
0
RAF
0