ISL40 Datasheet, PDF (9/12 Pages) Yamar Electronics Ltd. – Independent DC-LIN Slave For Asynchronous Communication Over Noisy Lines

Proprietary and Confidential Information of YAMAR Electronics Ltd.
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
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
ISL40
C 57
1u
VCC
Gnd
SigO3
SigO2
SigO1
SigO0
Mode4
DRxP
DRxN
Mode3
Vcc
OscIn
OscOut
12
11
10
9
8
7
6
5
4
3
2
1
VCC
Configuration lines (connect to Gnd or Vcc)
VCC
R34
330Ceramic ^Filter
R8
1M
R7 C101
1M ^0.1u
R7
2K
VCC
R1
R2 ^10M
330K
R5
100 R101
100K
C9
1n
C2
C1
X1
12p
12p
32.768KHz
VccPLL VCC
C150 _C8
>47uF ^0.1u
C7
1n
R14
1K
Q2
R18
18
R19
470
Analog Interface
R23 VCC
3.3K _Q1
VCC
PZT2222
C3
1
4
R24
0.1 3
6
39K ^R3
22 /0.25W
Protection Network
VC C
R4
FSA3157
2.2
R15
4.3K
C10
R17
1n
3.9K
R8
1M
R9
6.8
R11
1M
D1 BAS31
R 10
C6 ^6.8
47p
C5
C4 2.2nF/200V
0.1u R12
1K
R 13
Vcc = 3.3V
2.2
C12
1n
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