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4.3.2
InterfHop
When high, a detection of interference, switches the operating frequency. If at the new frequency, no
reception occurred for 2 sec, the operating frequency is switched back.
For designs with a single channel this pin should be tied to ground.
4.3.3
Interfer
Output signal is raised while interference is detected on the DC-BUS.
4.3.4
MF0nF1
Indicates the operating frequency, this is the configured frequency unless automatic frequency change
has been enabled and caused.
4.4
Line Interface
4.4.1
DTxO
Modulated transmit signal output.
4.4.2
TxOn
High when the device is transmitting a message.
4.4.3
RxP
Input to the internal comparator positive pin. It swings around RxN.
4.4.4
RxN
Input to the internal comparator negative pin. Its value should be about Vcc/2.
4.4.5
RxOn
High when the device is in receive mode.
4.4.6
Power Signals
There are three sets of power signals, (Vcc, Gnd)*2 and VccPLL, GndPLL. See 4.7 for details.
I/O lines
TxOn
RxOn
DC-Powerline
VCC
R8
Gnd
SigO3
SigO2
SigO1
SigO0
Mode4
DRxP
DRxN
Mode3
Vcc
OscIn
OscOut
12
11
10
9
8
7
6
5
4
3
2
1
1M
R7 C101
1M
0.1u
R34
Ceramic Filter
330
GND
Out
In
C7
1n
Analog Interface
R23
3.3K
VCC
Q1
PZT2222
C3
VCC
5
13
14
15
16
17
18
19
20
21
22
23
24
DTxO
TxOn
SigIO5
RxOn
SigIO6
SigIO7
Gnd
HDO
Interf
Id3
SigIO4
INH
25
26
27
28
29
30
31
32
33
34
35
36
SigIn2
AutoFreqChange
AutoSleep
nSleep
SigIn3
Id0
Id1
nReset
Wake
F0F1-2
F0F1-3
Interf Hop
1
4
6
Protection Network
VCC
R4
2.2
ISL40
R24
39K
R5
100
R101
R14
100K
C9
1n
R17
3.9K
1K
Q2
R15
4.3K
R3
22 /0.25W
2
0.1
3
R7
2K
VCC
R1
R2
330K
C2
10M
FSA3157
C10
1n
C57
1u
R9
6.8
R8
1M
R11
1M
D1 BAS31
R10
C6 6.8
47p
C5
C4 2.2nF/200V
0.1u
R12
1K
Vcc
GndPLL
BitRate1
BitRate0
Id2
F0F1-1
F0F1-0
MF0nF1
nExtndIn
SigIn1
SigIn0
VccPLL
48
47
46
45
44
43
42
41
40
39
38
37
VCC
VCC
12p
X1
C1
12p
VccPLL VCC
R18
18
C150
32.768KHz
C8
0.1u
R19
470
C12
1n
Vcc = 3.3V
R13
2.2
Configuration lines (connect to Gnd or Vcc)
>47uF
Figure 4.2 – Typical single channel line interface circuit
Note: The FSA3157 can be replaced with an analog switch.
© 2007 Yamar Electronics Ltd.
9
DS-ISL40 R1.6
YAMAR [ YAMAR ELECTRONICS LTD. ]
