Enhanced Serial Communication Interface (eSCI)
MPC5565 Microcontroller Reference Manual, Rev. 1.0
Freescale Semiconductor
20-35
Receiver
RDRF
Indicates that received data is available in the eSCI data register. The
receive data register full (RDRF) interrupt is set when the data in the
receive shift register transfers to the eSCI data register. An RDRF
interrupt indicates that the received data has been transferred to the
eSCI data register and that the received data can now be read by the
MCU. The RDRF bit is cleared by writing a one to the RDRF bit
location in the ESCI
x
_SR.
ESCI
x
_SR[2]
RIE
Receiver
IDLE
Indicates that receiver input has become idle. The idle line (IDLE)
interrupt is set when 10 consecutive logic 1s (if M = 0) or 11
consecutive logic 1s (if M = 1) appear on the receiver input. After the
IDLE is cleared, a valid frame must again set the RDRF flag before an
idle condition can set the IDLE flag.
The IDLE bit is cleared by writing
a one to the IDLE bit location in the ESCI
x
_SR.
ESCI
x
_SR[3]
ILIE
Receiver
OR
Indicates that an overrun condition has occurred. The overrun (OR)
interrupt is set when software fails to read the eSCI data register
before the receive shift register receives the next frame. The newly
acquired data in the shift register is lost in this case, but the data
already in the eSCI data registers is not affected.The OR bit is cleared
by writing a one to the OR bit location in the ESCI
x
_SR.
ESCI
x
_SR[4]
ORIE
Receiver
NF
Detect noise error on receiver input. The NF interrupt is set when the
eSCI detects noise on the receiver input.
ESCI
x
_SR[5]
NFIE
Receiver
FE
Framing error has occurred. The interrupt is set when the stop bit is
read as a 0; which violates the SCI protocol. FE is cleared by writing
it with 1.
ESCI
x
_SR[6]
FEIE
Receiver
PF
Parity of received data does not match parity bit; parity error has
occurred. The interrupt is set when the parity of the received data is
not correct. PF is cleared by writing it with 1.
ESCI
x
_SR[7]
PFIE
LIN
BERR
Detected a bit error, only valid in LIN mode. While the eSCI is in LIN
mode, the bit error (BERR) flag is set when one or more bits in the last
transmitted byte is not read back with the same value. The BERR flag
is cleared by writing a 1 to the bit. A bit error causes the LIN FSM to
reset. Clear the BERR flag by writing a 1 to the bit.
ESCI
x
_SR[11]
IEBERR
LIN
RXRDY
Indicates LIN hardware has received a data byte. While in LIN mode,
the receiver ready (RXRDY) flag is set when the eSCI receives a valid
data byte in an RX frame. RXRDY is not set for bytes which the
receiver obtains by reading back the data which the LIN finite state
machine (FSM) has sent out. Clear the RXRDY flag by writing a 1 to
the bit.
ESCI
x
_SR[16]
RXIE
LIN
TXRDY
Indicates LIN hardware can accept a control or data byte. While in LIN
mode, the transmitter ready (TXRDY) flag is set when the eSCI can
accept a control or data byte. Clear the TXRDY flag by writing a 1 to
the bit.
ESCI
x
_SR[17]
TXIE
Table 20-21. eSCI Interrupt Flags, Sources, Mask Bits, and Descriptions (continued)
Interrupt
Source
Flag
Description
Source
Local
Enable
Содержание MPC5565
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Страница 515: ...External Bus Interface EBI MPC5565 Microcontroller Reference Manual Rev 1 0 12 70 Freescale Semiconductor...
Страница 553: ...Flash Memory MPC5565 Microcontroller Reference Manual Rev 1 0 13 38 Freescale Semiconductor...
Страница 559: ...SRAM MPC5565 Microcontroller Reference Manual Rev 1 0 14 6 Freescale Semiconductor...
Страница 577: ...Boot Assist Module BAM MPC5565 Microcontroller Reference Manual Rev 1 0 15 18 Freescale Semiconductor...
Страница 895: ...Deserial Serial Peripheral Interface DSPI MPC5565 Microcontroller Reference Manual Rev 1 0 19 72 Freescale Semiconductor...
Страница 973: ...Preface MPC5565 Microcontroller Reference Manual Rev 1 0 21 36 Freescale Semiconductor...
Страница 1145: ...MPC5565 Register Map MPC5565 Microcontroller Reference Manual Rev 1 0 A 60 Freescale Semiconductor...
Страница 1153: ...Calibration MPC5565 Microcontroller Reference Manual Rev 1 0 B 8 Freescale Semiconductor...