IC-GD datasheet(48/55 Pages) ICHAUS

48 / 55 page

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iC-GD

UNIVERSAL I/O INTERFACE

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.

PWM_LAP_1

LK - P

RW - 0

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

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.

TM_SEL_x

LK - P

RW - 00000

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

Table 64: Temperature measurement selection

PT-Element

CO_SEL_x

DATA_xS

PT100

0...2 mA (10)

1.7 mA (0xCF3C)

PT200

0...2 mA (10)

0.85 mA (0x67A0)

PT300

0...2 mA (10) 0.5667 mA (0x4514)

PT500

0...2 mA (10)

0.34 mA (0x2974)

PT1000

0...200 µA (11)

170 µA (0xCF3C)

PT2000

0...200 µA (11)

85 µA (0x67A0)

PT3000

0...200 µA (11)

56.67 µA (0x4514)

PT5000

0...200 µA (11)

34 µA (0x2974)

PT9000

0...200 µA (11)

18.89 µA (0x1708)

Table 65: PT current selection examples

EN_CH_STAT_xX

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.

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

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

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