TSB41BA3DPFP datasheet(25/59 Pages) TI

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TPA+

TPA-

TPB+

TPB-

Cable Port

CPS

TPBIAS

56 Ω

5 kΩ

1 µF

400 kΩ

270 pF

(see Note A)

TSB41BA3D

Cable

Power

Pair

Cable

Pair

Cable

Pair

Outer Shield

Termination

1 MΩ

0.1 µF

270 µF

TSB41BA3D

www.ti.com ............................................................................................................................................... SLLS959A – DECEMBER 2008 – REVISED MARCH 2009

Table 12. Power-Class Descriptions

PC0–PC2

DESCRIPTION

000

Node does not need power and does not repeat power.

001

Node is self-powered and provides a minimum of 15 W to the bus.

010

Node is self-powered and provides a minimum of 30 W to the bus.

011

Node is self-powered and provides a minimum of 45 W to the bus.

100

Node can be powered from the bus and is using up to 3 W; no additional power is needed to enable the link. The node can

also provide power to the bus. The amount of bus power that it provides can be found in the configuration ROM.

101

Reserved for future standardization.

110

Node is powered from the bus and uses up to 3 W. An additional 3 W is needed to enable the link.

111

Node is powered from the bus and uses up to 3 W. An additional 7 W is needed to enable the link.

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

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