User`s guide

2-14
C31
C32
See Note 4
C38
FTT-10
C34 C33
C35
+
+
+5V
(spark gaps)
See Notes 2 and 3
D33B D34B
D33A D34A
NET_A
NET_B
T1
T2
VCC
CLK
GND
TXEN
CLKSEL0
RX_ACTIVE
RXD
TXD/CLKSEL1
~RESET
C21
C22
See Note 4
C28
C24 C23
C25
+
+
+5V
(spark gaps)
See Notes 2 and 3
D23B D24B
D23A D24A
NET_A
NET_B
T1
T2
VCC
CLK
GND
TXEN
CLKSEL0
RX_ACTIVE
RXD
TXD/CLKSEL1
~RESET
RxD2
RxA2
+5V
+5V
RxD3
RxA3
TxEn
TxD/CS1
Clk
~Reset
Notes (cont.):
4. Omit C18, C28, C38, and spark gaps if the node is floating.
5. The delay through the OR and NOR gates must be less than 300ns. The inputs and outputs must be
CMOS compatible.
6. This method can be extended to build an N-way repeater. The LPT-10 transceiver can power at most a
5-way repeater; above this number, use FTT-10 transceivers and an external power source.
TxD/CS1
TxEn
Clk
~Reset
TxD/CS1
TxEn
Clk
~Reset
FTT-10
D21B D21A
D22A D22B
D31B D31A
D32A D32B
Rr
Rr
To/From
Network
Segment 3
To/From
Network
Segment 4
Figure 2.6b Four-Way Repeater Schematic (page 2 of 2)