MB86613S Datasheet, PDF (10/134 Pages) Fujitsu Component Limited. – IEEE1394 Open HCI Controller

2.4. Connection Example with External Components
Preliminary
2.4.1. 1394 Port
Figure 2.2 shows an example of connection diagram on 1394 port.
CPS pin inputs a cable power divided by a 510kW and a 91kW resistors. Insert an 1mF capacitor between
TPBIAS pin and GND and also the TPBIAS pin is to be connected with each TPA pin through a 56W resistor.
TPB and TPB# pins are connected with GND through 56W resistors also. (a CR circuit composed of a 250pF
and 5.1kW is further required between the 56W resistor and GND.) RO pin is connected with GND through a
5.1kW resistor. TPA and TPB pins at the unused ports should be connected to GND, and TPBIAS pins to
Open.
Those resistor and capacitor are reference values and does not guarantee stable operation on your applica-
tion system.
CPS
510kW
+
91kW
-
2.2mF
Cable
Power Pair
TPBIAS
TPA+
TPA-
TPB+
TPB-
56W 56W
+
-
1mF
Cable
Pair A
Cable
Pair B
56W
56W
250pF
5.1kW
RO
5.1kW
Fig. 2.2 1394 Cable Port Connection Example
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