XIO2000 datasheet(21/150 Pages) TI

21 / 150 page

Introduction

November 2005

SCPS097B

Table 2−3. Power Supply Terminals

SIGNAL

BALL

I/O

TYPE

EXTERNAL

PARTS

DESCRIPTION

VCCP

A04, J01

PWR

Bypass

capacitors

5.0-V or 3.3-V PCI bus clamp voltage to set maximum I/O voltage

tolerance of the secondary PCI bus signals

VDD_15

D09, H14, J04,

P07, P15

PWR

Bypass

capacitors

1.5-V digital core power terminals

VDDA_15

F17, J14, J15,

G15

PWR

Pi filter

1.5-V analog power terminal

VDD_33

C06, C13, D10,

E03, H04, M03,

P09, P10, P11,

R05, R14, T13

PWR

Bypass

capacitors

3.3-V digital I/O power terminals

VDD_33_AUX

K14

PWR

Bypass

capacitors

3.3-V auxiliary power terminal

Note: This terminal is connected to VSS through a pulldown resistor if

no auxiliary supply is present.

VDDA_33

D15, K15

PWR

Pi filter

3.3-V analog power terminal

Table 2−4. Ground Terminals

SIGNAL

BALL

I/O

TYPE

DESCRIPTION

VSS

C05, C14, D03, D08, D11, G04,

G17, K04, K17, N03, P08, R04,

R06, R10, R11, R12, R13, R17

GND

Digital ground terminals

VSS

G07, G08, G09, G10, G11, H07,

H08, H09, H10, H11, J07, J08,

J09, J10, J11, K07, K08, K09,

K10, K11, L07, L08, L09, L10, L11

GND

Ground terminals for thermally-enhanced package

VSSA

B17, E15, F15, F16, G14, G16,

H15, J16, L15

GND

Analog ground terminal

Table 2−5. Combined Power Outputs

SIGNAL

BALL

I/O

TYPE

EXTERNAL

PARTS

DESCRIPTION

VDD_15_COMB

M17

Feed

through

Bypass

capacitors

Internally-combined 1.5-V main and VAUX power output for external bypass

capacitor filtering. Supplies all internal 1.5-V circuitry powered by VAUX.

Caution: Do not use this terminal to supply external power to other devices.

VDD_33_COMB

K16

Feed

through

Bypass

capacitors

Internally-combined 3.3-V main and VAUX power output for external bypass

capacitor filtering. Supplies all internal 3.3-V circuitry powered by VAUX.

Caution: Do not use this terminal to supply external power to other devices.

VDD_33_COMBIO

L14

Feed

through

Bypass

capacitors

Internally-combined 3.3-V main and VAUX power output for external bypass

capacitor filtering. Supplies all internal 3.3-V input/output circuitry powered by

VAUX.

Caution: Do not use this terminal to supply external power to other devices.

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