IC-GF Datasheet, PDF (17/26 Pages) IC-Haus GmbH – TRANSCEIVER

iC-GF
TRANSCEIVER
CHANNEL 1
TXEN(0) QCFG1(1:0) TX OUTD(0) INV(0) QN1 QP1
0
01
x
0
0 off off
0
01
x
0
1 on off
0
01
x
1
0 on off
0
01
x
1
1 off off
0
10
x
0
0 off off
0
10
x
0
1 off on
0
10
x
1
0 off on
0
10
x
1
1 off off
0
11
x
0
0 on off
0
11
x
0
1 off on
0
11
x
1
0 off on
0
11
x
1
1 on off
1
01
L
x
0 off off
1
01
L
x
1 on off
1
01
H
x
0 on off
1
01
H
x
1 off off
1
10
L
x
0 off off
1
10
L
x
1 off on
1
10
H
x
0 off on
1
10
H
x
1 off off
1
11
L
x
0 on off
1
11
L
x
1 off on
1
11
H
x
0 off on
1
11
H
x
1 on off
Table 11: Function table for channel 1 in SPI mode
Rev C1, Page 17/26
FCFI(1:0)
00
01
10
11
Adr 0x02; Bit (1:0)
Filter disabled
4 µs filtering (8 CLKs)
7 µs filtering (14 CLKs)
16 µs filtering (32 CLKs)
R/W 01
Table 12: CFI filter configuration
FCFG(1:0)
00
01
10
11
Adr 0x02; Bit (3:2)
Filter disabled
TX: 1.5 µs filtering (3 CLKs)
OEN: 3 µs filtering (6 CLKs)
TX: 4 µs filtering (8 CLKs)
OEN: 8 µs filtering (16 CLKs)
TX: 7.5 µs filtering (15 CLKs)
OEN: 15 µs filtering (30 CLKs)
R/W 10
Table 13: TX and OEN filter configuration
Digital filtering at inputs
The digital input filters can be configured with the reg-
ister FCFG for pins TX and OEN and register FCFI for
pin CFI. Figure 9 shows the filter time t_trig for TX (cf.
Electrical Characteristics Nos. 613 to 616 and 816 to
819).
Excitation current
Using register NEXC an additional current I_exc can
be activated for driving capacitive loads. Figure 9
shows the characteristic of one channel with the ex-
citation current enabled (cf. Electrical Characteristics
Nos. 110, 111, 210 and 211).
NEXC(1:0)
x0
x1
0x
1x
Adr 0x03; Bit (1:0)
Excitation for channel 1 enabled
Excitation for channel 1 disabled
Excitation for channel 2 enabled
Excitation for channel 2 disabled
R/W 11
Table 14: Excitation current configuration