Application information ST25R3916/7
Code
(hex)
Name
Table 13. List of direct commands (continued)
Comments
DA
Clears the RSSI bits in the
RSSI display register and restarts the
measurement
DB Clear FIFO Clears FIFO
DC Enter Transparent mode Enters in Transparent mode
DD
Clear RSSI
Calibrate capacitive sensor
Calibrates capacitive sensor
DE Measure capacitance
Measures capacitance between
CSO and CSI pin
DF Measure power supply
E0
Start General purpose timer
-
Chaining
Interrupt after termination
Operation mode
(1)
Yes
Yes
No
No
No
No
Yes
No
No
No
Yes
Yes
Yes
No en en en
All
All en en
E1 Start Wake-up timer Yes No
All except wu
E2
E3
Start Mask-receive timer
Start No-response timer
E4 Start PP
ON2
timer
E8 Stop No-response timer
FA
FB
RFU
Register space-B access
Starts the mask-receive timer and squelch operation
-
-
-
Not used
Enables R/W access to register
Space-B
Enable R/W access to Test register
Yes
Yes
Yes
Yes
-
Yes
No
No
No
No
-
No
FC Test access
Other codes
RFU Not used
Yes
-
No
-
1. Defines which Operation control register
bits have to be set in order to accept a particular command.
2. Measure amplitude and Measure phase can be used directly from power down mode. In this case the command temporarily enables the oscillator.
en en en en
all
All
-
This direct command puts the ST25R3916/7 in the same state as power-up initialization:
performs Stop all activities command
resets all registers to their default state
clears all collision bits
Results of previous calibration and adjust commands are lost. No IRQ due to termination of direct command is produced.
60/157
DS12484 Rev 4
