XC886/888CLM
Serial Interfaces
User’s Manual
12-43
V1.3, 2010-02
Serial Interfaces, V 1.0
12.3.2
Interrupts
An overview of the various interrupts in SSC is provided in
.
Table 12-7
SSC Interrupt Sources
Interrupt
Signal
Description
Transmission
starts
TIR
Indicates that the transmit buffer can be reloaded with new
data.
Transmission
ends
RIR
The configured number of bits have been transmitted and
shifted to the receive buffer.
Receive
Error
EIR
This interrupt occurs if a new data frame is completely
received and the last data in the receive buffer was not
read.
Phase Error
EIR
This interrupt is generated if the incoming data changes
between one cycle before and two cycles after the latching
edge of the shift clock signal SCLK.
Baud Rate
Error (Slave
mode only)
EIR
This interrupt is generated when the incoming clock signal
deviates from the programmed baud rate by more than
100%.
Transmit
Error (Slave
mode only)
EIR
This interrupt is generated when TB was not updated since
the last transfer if a transfer is initiated by a master.
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