TMP92CF30
2009-06-12
92CF30-34
The following is an example of settings for PLL0-starting and PLL0 stopping.
(Example-1) PLL0-starting
PLLCR0 EQU 10E8H
PLLCR1 EQU 10E9H
LD
(PLLCR1),1XXXXXXXXB
;
Enables PLL0 operation and starts lock up.
LUP: BIT
5,(PLLCR0)
;
JR
Z,LUP
;
Detects end of lock-up
LD
(PLLCR0), X1XXXXXXB
;
Changes fc from 10 MHz to 60 MHz.
X: Don't care
Counts up by f
OSCH
During lock-up
<PLL0>
PLL output: f
PLL
Lockup timer
<LUPFG>
System clock f
SYS
Starts PLL0 operation and
Starts lock-up.
Ends of lock-up
Changes from 10MHz to 60MHz.
After lock-up
<FCSEL>
(Example-2) PLL0-stopping
PLLCR0 EQU 10E8H
PLLCR1 EQU 10E9H
LD
(PLLCR0),X0XXXXXXB
;
Changes fc from 60 MHz to10 MHz.
LD
(PLLCR1),0XXXXXXXB
;
Stop PLL
X: Don't care
<PLL0>
PLL0 output: f
PLL
System clock f
SYS
Stops PLL0 operation .
Changes from 60MHz to 10 MHz.
<FCSEL>
Note: PLL1 operates as well.
Содержание TLCS-900/H1 Series
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