IC-GD Datasheet, PDF (48/55 Pages) IC-Haus GmbH – UNIVERSAL I/O INTERFACE

iC-GD
UNIVERSAL I/O INTERFACE
preliminary
Rev A1, Page 48/55
The bit PWM_LAP_1 (only present in the first channel)
is intended for operation of the PWM in antivalent mode.
If it is active and a channel is inverted in active mode
(DO = ’1’), both outputs operate in antivalent mode. In
inactive mode, (DO = ’0’) both outputs are set to the
same state depending on DIO_INV_1 and _2 either ’0’
or ’1’. The use of this bit requires the bit DO_12.
is selected automatically by the iC. The same applies to
the PT-temperature sensors, whereas, additionally, the
required current must be set as secondary function, i.e.
both registers CO_SEL_x and DATA_xS. The current
must be selected in such a way that the nominal value
i.e. at 0 °C results in a voltage of exactly 170 mV. Table
65 helps selecting appropriate output currents.
PWM_LAP_1
LK - P
RW - 0
1
PWM_2 anitvalent or in phase with PWM_1 when off
Table 63: PWM antivalent gating
TM_SEL_x
The following registers refer to the function of tempera-
ture measurement. This register block shares its func-
tions with other modes. It is only valid if the temperature
measurement is also selected in the IO_SEL_xP regis-
ter.
The thermocouples do not require any further settings
except the selection of the temperature measurement in
register IO_SEL_x, i.e. the voltage measurement range
TM_SEL_x
00000
Thermo-couple J
00001
Thermo-couple K
00010
Thermo-couple T
00011
Thermo-couple N
00100
Thermo-couple E
00101
Thermo-couple R
00110
Thermo-couple S
00111
Thermo-couple B
11000
PT sensor, 2-wire
11001
PT sensor, 3-wire
11010
PT sensor, 4-wire
LK - P
RW - 00000
Table 64: Temperature measurement selection
PT-Element
PT100
PT200
PT300
PT500
PT1000
PT2000
PT3000
PT5000
PT9000
CO_SEL_x
0...2 mA (10)
0...2 mA (10)
0...2 mA (10)
0...2 mA (10)
0...200 µA (11)
0...200 µA (11)
0...200 µA (11)
0...200 µA (11)
0...200 µA (11)
DATA_xS
1.7 mA (0xCF3C)
0.85 mA (0x67A0)
0.5667 mA (0x4514)
0.34 mA (0x2974)
170 µA (0xCF3C)
85 µA (0x67A0)
56.67 µA (0x4514)
34 µA (0x2974)
18.89 µA (0x1708)
Table 65: PT current selection examples
EN_CH_STAT_xX
Register EN_CH_STAT_xX activates the bits of regis-
ter CH_STAT_xX. Note that bits 2, 3, 4, 5, and 6 can
only be activated en masse. This is relevant for the
limit detection. This limit can easily be restricted to just
exceeding or falling below by setting the appropriate
limit value to the maximum or minimum of the range.
Figure 7 shows the connection between the registers
CH_STAT, SPV and IRQ_FLAG_REG.
DIG_FIL_x
Via register DIG_FIL_x, the cut-off frequency of the dig-
ital filter can be set to filter the analog signals after the
AD converter. The cut-off frequencies also depend on
register FIL_HB_x.
CH_STAT_xX
LK-PS
RW - 0x0
bit0
activates relevant CH_STAT_xX, bit 0
bit1
activates relevant CH_STAT_xX, bit 1
bit2
activates relevant CH_STAT_xX, bits 2, 3
bit3
activates relevant CH_STAT_xX, bits 4, 5, 6
Table 66: CH status