Toshiba TLCS-900/H1 Series Data Book page 31

(2) Change / Stop Control
(OK) PLL use mode (f
→ Low frequency oscillator operation mode(f
LD (PLLCR0),-0------B
LD (PLLCR1),0-------B
LD (SYSCR1), ----1---B
LD (SYSCR0), 0-------B
(NG) PLL use mode (f
→High frequency oscillator stop
LD (SYSCR1), ----1---B
LD (PLLCR0), -0------B
LD (PLLCR1), 0-------B
LD (SYSCR0), 0-------B
(OK) PLL use mode (f
→High frequency oscillator operation mode (f
HALT(High frequency oscillator stop)
LD (SYSCR2), ----01--B
LD (PLLCR0),-0------B
LD (PLLCR1), 0------B
HALT
(NG) PLL use mode (f
LD (SYSCR2), ----01--B
HALT
)→ High frequency oscillator operation mode(f
PLL
; Change the system clock f
; PLL stop
; Change the system clock f
; High frequency oscillator stop
)→ Low frequency oscillator operation mode(f
PLL
; Change the system clock f
; Change the internal clock (f
; PLL stop
; High frequency oscillator stop
)→Set the STOP mode
PLL
; Set the STOP mode
(This command can execute before use of PLL)
; Change the system clock f
; PLL stop
; Shift to STOP mode
)→Set the STOP mode→ HALT(High frequency oscillator stop)
PLL
; Set the STOP mode
(This command can execute before use of PLL)
; Shift to STOP mode
92CH21 - 27
OSCH
)→High frequency oscillator stop
s
to f
PLL OSCH
to fs
OSCH
)→ PLL stop
s
to f
PLL S
) f
C PLL to
)→ PLL stop→
OSCH
to f
PLL OSCH
TMP92CH21
)→ PLL Stop
f
OSCH