Rainbow Electronics AT77C104B - Manual (Page 35)

35
AT77C104B
5347B–BIOM–08/04
Appendix D
Example of an Interrupt
Generated by a
Movement Detection
Interrupts Masked
SSS/ = 0
Yes
No
No
Yes
NAVIGATION Reading
Requested
Sending of 0b11100000
Transfer
Ended ?
No
Yes
STATUS Reading Requested
Sending of 0b11000000
Reception of the Command
Interrupts Control
Detection of Movement
Sending of Dummy Data
0b00000000
Reception of the 3 Navigations
3 Registers
Values Sent ?
No
Yes
Sending of the 3
Navigation Registers
SSS/ = 1
Interrupts enabled
Sensor
Controller
Reception of the Command
Reading of NAVIGATION
Sending of STATUS
Interrupts Cleared
Transfer
Ended ?
Transfer
Ended ?
Main Program
Interrup ? No
Sending of Dummy Data
0b00000000
Reception of STATUS
Interrupt Generated
IRQ/ = 0