SH7280 Datasheet, PDF (106/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 4 Clock Pulse Generator (CPG)
(8) AD Clock Frequency Control Register (ACLKCR)
The AD clock frequency control register (ACLKCR) has control bits assigned for the following
functions: AD clock (Aφ) output/non-output and the frequency division ratio.
(9) Standby Control Register
The standby control register has bits for controlling the power-down modes and for selecting the
USB clock. See section 28, Power-Down Modes, for more information.
(10) Oscillation Stop Detection Control Register (OSCCR)
The oscillation stop detection control register (OSCCR) has an oscillation stop detection flag and a
bit for selecting flag status output through an external pin.
(11) USB-only oscillator (SH7285, SH7286)
The oscillator for USB clock only that is connected to the resonator of 48 MHz.
Rev. 1.00 Jun. 26, 2008 Page 76 of 1692
REJ09B0393-0100