r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 164

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

6. Floating-Point Unit (FPU)
Rev.1.00 Jan. 10, 2008 Page 134 of 1658
REJ09B0261-0100
Bit
17 to 12 Cause
11 to 7
6 to 2
1
0
Bit Name
Enable
Flag
RM1
RM0
Initial
Value
All 0
All 0
All 0
0
1
R/W
R/W
R/W
R/W
R/W
R/W
Description
FPU Exception Cause Field
FPU Exception Enable Field
FPU Exception Flag Field
Each time an FPU operation instruction is executed, the
FPU exception cause field is cleared to 0. When an
FPU exception occurs, the bits corresponding to FPU
exception cause field and flag field are set to 1. The
FPU exception flag field remains set to 1 until it is
cleared to 0 by software.
For bit allocations of each field, see table 6.3.
Rounding Mode
These bits select the rounding mode.
00: Round to Nearest
01: Round to Zero
10: Reserved
11: Reserved