Section 3 Oscillator Circuits and Operating Modes
Rev. 2.00 Mar 09, 2006 page 108 of 906
REJ09B0292-0200
Pin Configuration:
Table 3.1 lists the functions relating to the pins relating to the oscillator
circuit.
Table 3.1
Pin Configuration
Pin Name
I/O
Function
CKIO
I/O
External clock input pin or internal clock output pin
XTAL
O
Connects to the crystal resonator
EXTAL
I
Connects to the crystal resonator or to the external clock input when
using PLL circuit 2
CAP1
I
Connects to capacitance for operating PLL circuit 1
CAP2
I
Connects to capacitance for operating PLL circuit 2
MD0
I
The level applied to these pins specifies the clock mode
MD1
I
MD2
I
CKPREQ
/CKM I
Used as the clock pause request pin, or specifies operation of the crystal
resonator
CKPACK
O
Clock pause function
PLL Circuit 1:
PLL circuit 1 eliminates phase differences between external clocks and clocks
supplied internally within the chip. In high-speed operation, the phase difference between the
reference clocks and operating clocks in the chip directly affects the interface margin with
peripheral devices
.
On-chip PLL circuit 1 is provided to eliminate this effect.
PLL Circuit 2:
PLL circuit 2 either leaves unchanged, doubles, or quadruples the frequency of
clocks provided from the crystal resonator or the EXTAL pin external clock input for the chip
operating frequency
.
The frequency modification register sets the clock frequency multiplication
factor.
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 ...