Analog Devices ADuCM320 Hardware Reference Manual page 189

ADuCM320 Hardware Reference Manual
HARDWARE
KERNEL CODE
K2B0 = 0
N
K2B1 = 0
Y
USER CODE
SWITCH TO FLASH 1
Y
Y
N
SWITCH TO FLASH 1
CHANGE TO USER CODE
N
Y
KEY2 = 0
N
ERROR
FLASH OTHER BLOCK (KEY2' = 0xFFs, K1' = K1+1)
Figure 38. Flowchart for MDIO Memory Block Switching
RESET
N
P2.3 = HIGH
N
K1B0 < K1B1
Y
N
RUN
DOWNLOADER
Y
KEY1' > KEY1
TRIAL RUN
TRIAL OK
Y
WRITE
NORMAL RUN
KEY2' = 0
Rev. C | Page 189 of 196
Y
K2B1 = 0
N
K2B0 = 0
Y
N
UG-498