AT77C105A Datasheet, PDF (37/39 Pages) ATMEL Corporation – FingerChip Thermal Fingerprint Sweep Sensor, Hardware Based Navigation and Click Functions, Extended I/O range(1.8-3.3V)

Appendix C
Example of Navigation
Registers
AT77C105A [Preliminary]
Sensor
Reception of the Command
Reading of NAVIGATION
Sending of NAVIG1
Sending of NAVIG2
Sending of NAVIG3
Controller
Interrupts Masked
SSS/ = 0
NAVIGATION Reading
Requested
Sending 0b11000000
Transfer
No
Ended ?
Yes
Sending of Dummy Data
0b00000000
Reception of NAVIG1
Transfer
No
Ended ?
Yes
Sending of Dummy Data
0b00000000
Reception of NAVIG2
Transfer
No
Ended ?
Yes
Sending of Dummy Data
0b00000000
Reception of NAVIG3
Transfer
No
Ended ?
Yes
SSS/ = 1
Interrupts Enabled
37
5419A–BIOM–01/05