HD6417616 RENESAS [Renesas Technology Corp], HD6417616 Datasheet - Page 146

• Manufacturer Part Number: HD6417616
• Description: 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7600 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 3 Oscillator Circuits and Operating Modes
Rev. 2.00 Mar 09, 2006 page 120 of 906
REJ09B0292-0200
clock4_err:
;
;
;
FREQUENCY:
MOV.L #WTCSR,R1
MOV.W #H'A51F,R2
MOV.L #H'26200000,R3
MOV.L #FMR,R4
jmp
nop
nop
nop
nop
nop
bra
nop
nop
nop
nop
Main portion of frequency change code.
First copy this to XRAM and then run it in XRAM.
; <Watchdog timer control and status register setting>
; Clear TME bit.
; Clock input to WTCNT is /16384
; (Overflow frequency = 262.144 ms)
; <External cache through area read>
; Cache through area of external member space 3: H'26200000
; <Frequency change register setting>
; PLL circuit 1
; PLL circuit 1
MOV.W R2,@R1
MOV.L @R3,R0
@r5
clock4_err
Disabled.
Enabled.