MB86613S 데이터 시트보기 (PDF) - Fujitsu

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MB86613S

IEEE1394 Open HCI Controller

Fujitsu 

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

9

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