Texas Instruments Dual/Single Socket CardBus and UntraMedia Controller PCI7621 - Manual (Page 86)

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3.9 IEEE 1394 Application Information
3.9.1 PHY Port Cable Connection
TPA+
TPA−
TPB+
TPB−
Cable Port
CPS
TPBIAS
56 Ω 56 Ω
56 Ω 56 Ω
5 k Ω
1 µ F
400 k Ω
220 pF
(see Note A)
PCI7x21/
PCI7x11
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 Ω
0.001 µ F 0.01 µ F
Outer Cable Shield
Chassis Ground
Figure 3−18. Typical Compliant DC Isolated Outer Shield Termination