IC-LO Datasheet, PDF (17/21 Pages) IC-Haus GmbH – TRIANGULATION SENSOR

iC-LO
TRIANGULATION SENSOR
preliminary
Rev A1, Page 17/21
With command STARTUP/RESET internal state ma-
chines, counters, and the status register are reset. The
device waits for further commands.
Command OSC_OUT_ON enables the output of a
1 MHz clock (based on the system clock) through pin
WARN.
With command REG_PROT_ON the internal configu-
ration register addresses 0x00 . . . 0x0D are protected
against overwriting. This write protection can be can-
celled by command REG_PROT_OFF.
Status register
The status register is read out on a read access to
register 0x0F. The switching state, warning, and tran-
simpedance mode from the last measurement cycle
are stored here, plus the last four individual differen-
tial comparator measurements. These can originate
from one measurement cycle or from various individual
measurement cycles with short measurement cycles.
KD(0) is the most recent and KD(3) the oldest result.
The switching state stored in the register is indepen-
dent of SOCNO (see 15). Coding of TII is equivalent
to that of TIM(1:0) (Table 11).
Command TST_SO_ON sets switching output SO to
active and NSO to inactive regardless of the internal
SOI state (observe SOCNO and SOEN programming).
Command TST_SO_OFF sets switching output SO to
inactive and NSO to active regardless of the internal
SOI state (observe SOCNO and SOEN programming).
Command TST_WARN_ON sets warning output
WARN to 1 regardless of the internal WARNI state.
Command TST_WARN_OFF sets warning output
WARN to 0 regardless of the internal WARNI state.
STATUS
Bit
3:0
5:4
6
7
Addr. 0x0F; bit 7:0
R
Name
Description
KD
Results of difference
comparator
TII
Transimpedance of last
measurement
WARNI
Warning from last
measurement cycle
SOI
Output from last
measurement cycle
Table 28: Status register 0x0F
POWER DOWN RESET
The internal power-down reset (low active) is output
through NRES. The enable (rising edge) is delayed
(see R04).
CONFIGURATION NOTES
• Parameter SKO should be programmed to 0x5 so
that it is adjusted to suit the signal conditioning chain
in iC-LO (see Table 20).
• The light pulse width programmed using parameter
PW (see Table 10) should be at least 0.5 µs longer
than SKO.
• Operating mode SINGLE_MEASURE only functions
when FIN = FIM = 0x0 (see Table 18/19).
CHIP REVISION
The parameter REV in the iC-LO ROM provides the ^REV
Addr. 0x12; bit 7:0
R
chip revision.
Code
Chip revision
0x0
iC-LO 0
0x1
iC-LO 1
0x2
iC-LO ZA
0x3
iC-LO ZB
0x4
iC-LO ZA1
0x5
iC-LO Y
0x6
reserved
...
0xFF
reserved