Time Stamp Function Triggered By I; Access - Epson RX8111CE Applications Manual

RX8111CE

14.8.4. Time stamp function triggered by I

2
An I C access can trigger time stamp too.
1) COMTG bit
This register control Time stamp trigger by I
COMTG
Write
2) Time stamp access timing
Time stamp processing is done at ACK operation just after slave address sending (of command trigger reading).
SDA(Slave）
Time stamp trigger
/INTpin
Register data
Figure 33 Operation of OVW, pointer
2
C access ON/OFF.
Table 58 COMTG bit (Command Trigger)
Data Description
0 Time stamp trigger by I
Time stamp trigger by I
RTC timer counter and internal status data are recorded into 20h~29h by I
1
reading access from 2Fh. The read data of 2Fh is 00h.
Also, multi access is available.
SCL
0
SDA(Master）
2
C access
2
C-Bus OFF
2
C-Bus ON
0
1 0
Slave address+ Read bit
Time stamp data
Figure 34 Time stamp timing by I
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R Command Trigger data
ACK
Trigger
New Time stamp data
2
C access.
2
C
ETM61E-01