Datasheet

TSB81BA3D, TSB81BA3DI
IEEE 1394b THREE-PORT CABLE TRANSCEIVER/ARBITER
SLLS559E − DECEMBER 2002 − REVISED JUNE 2006
22
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
power-class programming (continued)
TPA+
TPA−
TPB+
TPB−
Cable Port
CPS
TPBIAS
56 Ω56 Ω
56 Ω56 Ω
5 kΩ
1 μF
400 kΩ
270 pF
(see Note A)
TSB81BA3D
Cable
Power
Pair
Cable
Pair
A
Cable
Pair
B
Outer Shield
Termination
VP
VG
1 MΩ
0.1 μF
270 pF
TPA_REFGND
TPB_REFGND
NOTE A: The IEEE Std 1394−1995 calls for a 250-pF capacitor, which is a nonstandard component value. A 270-pF capacitor is recommended.
Figure 4. Typical TP Cable Connections
1 MΩ
0.001 μF0.01 μF
Outer Cable Shield
Chassis Ground
Figure 5. Typical DC Isolated Outer Shield Termination