HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 136

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

118
clock4_err:
;
;
;
FREQUENCY:
MOV.L
MOV.L
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 = 278.528 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
; Iø( 4)=60MHz, Eø( 4)=60MHz,
; Pø( 2)=30MHz, CKIO(Eø)=60MHz,
;
; PLL circuits 1 and 2
MOV.W
MOV.L
MOV
@r5
clock4_err
#H'26200000,R3
#FMR,R4
R2,@R1
@R3,R0
#H'4E,R0
Disabled.
Enabled.
Enabled.