3.9 IEEE 1394 Application Information

3.9.1PHY Port Cable Connection

PCI7x21/

 

400 k

PCI7x11

CPS

 

1 F

TPBIAS

56

56

TPA+

TPA−

Cable Port

TPB+

TPB−

56

56

220 pF

5 k

(see Note A)

 

Cable

Power

Pair

Cable

Pair

A

Cable

Pair

B

Outer Shield

Termination

NOTE A: IEEE Std 1394-1995 calls for a 250-pF capacitor, which is a nonstandard component value. A 220-pF capacitor is recommended.

Figure 3−17. TP Cable Connections

1 M

0.01F

Outer Cable Shield

0.001 F

Chassis Ground

Figure 3−18. Typical Compliant DC Isolated Outer Shield Termination

3−30

Page 86
Image 86
Texas Instruments PCI7621, PCI7411, PCI7611, PCI7421 manual Ieee 1394 Application Information, PHY Port Cable Connection