14. How to use
RX4111CE
Jump to
ETM62E-02
Seiko Epson Corporation
47
Table 57 Time Stamp RAM control registers
Bank3
Address
[h]
Function
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
4
Time Stamp
Control 1
z
z
z
z
z
EISEL
TSCLR TSRAM
5
Time Stamp
Control 2
z
z
z
▲
EVDET
▲
EXST
6
Time Stamp
Control 3
z
z
z
TSFUL
TSEMP TSDA2 TSDA1 TSDA0
14.8.5. RTC Self Monitoring Time stamp Function
1) VDET bit (Time Stamp VDET)
Comparison result of V
DD
and V
DET1
Table 58 VDET bit (VDET)
VDET
Data
Description
Read
0
V
DD
>
V
DET1
, Normal mode (V
DD
supply)
1
V
DD
< V
DET1
, Backup mode (V
BAT
supply)
2) XST bit (Time stamp Crystal Oscillation Stop)
Status record of crystal oscillation
Table 59 XST bit (Crystal Oscillation Stop)
XST
Data
Description
Read
0
Crystal oscillation is normal.
1
Crystal oscillation stopped or temporarily stopped.
XST detects more than 10ms stopped.
The time stamp cannot be recorded at the moment of oscillation stop. It is recorded at the moment the oscillation
restores.
3) EVDET bit (Enable VDET)
Enable/Disable control of time stamp VDET
Table 60 EDVET bit (Enable VDET)
EVDET
Data
Description
Write
0
No time stamp even VDET is detected.
1
Time stamp by VDET detection.
4) EXST bit (Enable Time stamp Crystal Oscillation Stop)
Enable/Disable control of time stamp XST
Table 61 EXST bit
EXST
Data
Description
Read
0
No time stamp even Crystal oscillation stops.
1
Time stamp by Crystal oscillation stop detection.
14.8.6. Time Stamp Record Register
When an event is detected, the following data is recorded.
Table 62 Time Stamp RAM control registers
Bank3
Address
Function
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
4h
Time Stamp
Control 1
z
z
z
z
z
EISEL
TSCLR TSRAM
5h
Time Stamp
Control 2
z
z
z
▲
EVDET
▲
EXST