SH7619_09 Datasheet, PDF (249/860 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 8 Clock Pulse Generator (CPG)
8.4.3 Usage Notes
• MCLKCR is used only to generate clocks for the on-chip PHY. However, dedicated clocks
input from the CK_PHY pin can be used instead of Mφ, which is set by MCLKCR as clocks
for the on-chip PHY.
• When changing the contents of MCLKCR or FRQCR, make sure that the on-chip PHY is in
the reset state. Otherwise, a hazard may be temporarily generated on Mφ output. To use Mφ as
clocks for the on-chip PHY, assert the module reset of the on-chip PHY after the contents of
MCLKCR or FRQCR have been changed.
Rev. 6.00 Jul. 15, 2009 Page 209 of 816
REJ09B0237-0600