SH7670 Datasheet, PDF (405/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Bit
4
3 to 0
Section 11 Power-Down Modes
Initial
Bit Name Value R/W Description
MSTP7
0
R/W Module Stop 7
When the MSTP7 bit is set to 1, the clock supply to
the FPU is halted. After the MSTP7 bit is set to 1, the
value of 0 cannot be written for clearing. In other
words, once the MSTP7 bit is set to 1 and the clock
supply to the FPU is temporarily halted, then the clock
supply to the FPU cannot be restarted by clearing the
MSTP7 bit to 0.
If the clock supply to the FPU is halted and then
restarted, a power-on reset must be performed for
this LSI.
0: FPUC runs.
1: Clock supply to FPU halted.

All 0
R
Reserved
These bits are always read as 0. The write value
should always be 0.
Rev. 1.00 Nov. 14, 2007 Page 379 of 1262
REJ09B0437-0100