Technical Reference Manual
002-29852 Rev. *B
Bits Name
SW
HW
Default or
Enum
Description
26
OFC_MASK
RW
R
0
CPU FPU exception mask for the CPU's FPCSR.OFC
'overflow' exception condition:
'0': The CPU's exception condition does NOT activate
the CPU's floating point interrupt.
'1': the CPU's exception condition activates the CPU's
floating point interrupt.
27
UFC_MASK
RW
R
0
CPU FPU exception mask for the CPU's FPCSR.UFC
'underflow' exception condition:
'0': The CPU's exception condition does NOT activate
the CPU's floating point interrupt.
'1': the CPU's exception condition activates the CPU's
floating point interrupt.
28
IXC_MASK
RW
R
0
CPU FPU exception mask for the CPU's FPCSR.IXC
'inexact' exception condition:
'0': The CPU's exception condition does NOT activate
the CPU's floating point interrupt.
'1': the CPU's exception condition activates the CPU's
floating point interrupt.
Note: the 'inexact' condition is set as a result of
rounding. Rounding may occur frequently and is
typically not an error condition. To prevent frequent
CPU FPU interrupts as a result of rounding, this field is
typically set to '0'.
31
IDC_MASK
RW
R
0
CPU FPU exception mask for the CPU's FPCSR.IDC
'input denormalized' exception condition:
'0': The CPU's exception condition does NOT activate
the CPU's floating point interrupt.
'1': the CPU's exception condition activates the CPU's
floating point interrupt.
Note: if the CPU FPCSR.FZ field is set to '1',
denormalized inputs are 'flushed to zero'. Dependent
on the FPU algorithm, this may or may not occur
frequently. To prevent frequent CPU FPU interrupts as
a result of denormalized inputs, this field may be set to
'0'.
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2022-04-18
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