Epson RX4111CE - Time Stamp Function Triggered by SPI Access; Table 54 COMTG Bit (Command Trigger)

14. How to use
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ETM62E-02 Seiko Epson Corporation 45
14.8.3. Time Stamp function triggered by SPI Access
1) COMTG bit (Command Trigger) Time stamp by SPI-Bus access.
Note: EVF is not set by SPI-Bus command trigger. Therefore, Time stamp interruption doesn’t occur.
This function was prepared for to read time data of sub seconds from Year without contradiction.
Table 54 COMTG bit (Command Trigger)
COMTG
Data
Description
Write
0
Time stamp by SPI-Bus is disabled.
1
Time stamp by SPI-Bus available
When a reading command to Bank2 address Fh is transmitted by SPI-Bus,
the time is recorded by Bank2 address 0h to 9h. The read value of Bank2
address Fh is 0h.
2) Time stamp Timing
1
1
1
1
/INTpin
DI
CLK
Time stamp trigger
1
Trigger
Register data
Time stamp data
New Time stamp data
Mode + Address(Ah + Fh)
Dummy read
Figure 35 Time Stamp SPI-Bus record timing