Section 3 Oscillator Circuits and Operating Modes
Rev. 2.00 Mar 09, 2006 page 109 of 906
REJ09B0292-0200
3.2.2
Clock Operating Mode Settings
Table 3.2 lists the functions and operation of clock modes 0 to 6.
Table 3.2
Operating Modes
Clock Mode
Function/Operation
Clock Source
0
PLL circuits 1 and 2 operate. A clock is output with the same
phase (with the same frequency as E
φ
) as the internal clocks
(I
φ
, E
φ
, P
φ
) from the CKIO pin
PLL circuits 1 and 2 can be switched between the operating
and halted states by means of control bits in the frequency
modification register (FMR). The CKIO pin can also be placed
in the high-impedance state
Normally, mode 0 should be used.
Crystal resonator/
external clock input
1
PLL circuits 1 and 2 operate. A clock (with the same
frequency as E
φ
) 1/4
φ
cycle in advance of the chip's internal
system clock
φ
is output from the CKIO pin.
PLL circuits 1 and 2 can be switched between the operating
and halted states by means of control bits in the frequency
modification register (FMR). The CKIO pin can also be placed
in the high-impedance state. However, clock phase shifting is
not performed when PLL circuit 1 is halted.
Normally, mode 0 should be used.
2
Only PLL circuit 2 operates. The clock from PLL circuit 2 is
output from the CKIO pin (having the same frequency as the
E
φ
). As PLL circuit 1 does not operate, phases are not
matched in this mode
PLL circuit 2 can be switched between the operating and
halted states by means of a control bit in the frequency
modification register (FMR). The CKIO pin can also be placed
in the high-impedance state
3
Only PLL circuit 2 operates. The CKIO pin is high-impedance
PLL circuit 2 can be switched between the operating and
halted states by means of a control bit in the frequency
modification register (FMR)
4
Only PLL circuit 1 operates. Operate PLL circuit 1 when
operating with synchronization of the phases of the clock
input from the CKIO pin and the internal clocks (I
φ
, E
φ
, P
φ
).
PLL circuit 2 does not operate in this mode
PLL circuit 1 can be switched between the operating and
halted states by means of a control bit in the frequency
modification register (FMR)
External clock input
Содержание SH7616
Страница 10: ...Rev 2 00 Mar 09 2006 page x of xxvi ...
Страница 132: ...Section 2 CPU Rev 2 00 Mar 09 2006 page 106 of 906 REJ09B0292 0200 ...
Страница 568: ...Section 12 16 Bit Free Running Timer FRT Rev 2 00 Mar 09 2006 page 542 of 906 REJ09B0292 0200 ...
Страница 582: ...Section 13 Watchdog Timer WDT Rev 2 00 Mar 09 2006 page 556 of 906 REJ09B0292 0200 ...
Страница 662: ...Section 14 Serial Communication Interface with FIFO SCIF Rev 2 00 Mar 09 2006 page 636 of 906 REJ09B0292 0200 ...
Страница 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Страница 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
Страница 935: ...SH7616 Hardware Manual ...