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Section 3 Floating-Point Unit (FPU)
Page 104 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
3.3.3 Floating-Point Communication Register (FPUL)
Information is transferred between the FPU and CPU via FPUL. FPUL is a 32-bit system register
that is accessed from the CPU side by means of LDS and STS instructions. For example, to
convert the integer stored in general register R1 to a single-precision floating-point number, the
processing flow is as follows:
R1 (LDS instruction) FPUL (single-precision FLOAT instruction) FR1