TSB17BA1

IEEE STD 1394b SINGLEPORT CABLE TRANSCEIVER

SLLS568C − JANUARY 2004 − REVISED MARCH 2004

4

POST OFFICE BOX 655303

Terminal Functions (Continued)

TERMINAL

I/O

DESCRIPTION

NAME

TYPE

NO.

I/O

DESCRIPTION

Power and Ground Terminals (Continued)

VDDCORE

Supply

18

−

Core power. Internal core circuit power terminal. Must be decoupled with a 1-

µF capacitor

in parallel with other smaller capacitors, such as 0.001-

µF capacitors.

VDD33

Supply

7

−

3.3-V power. I/O 3.3-V circuit power terminals. A combination of high-frequency decoupling

capacitors near each terminal are suggested, such as paralleled 0.1

µF and 0.001 µF.

Lower frequency 10-

µF filtering capacitors are also recommended.

VSSCORE

Supply

15

−

Core ground. Tie to the ground plane of the PWB as close as possible to the terminal.

VSS33

Supply

4

−

3.3-V ground. Tie to the ground plane of the printed wiring board (PWB) as close as

possible to the terminal.