OMAP5910 datasheet(46/166 Pages) TI

46 / 166 page

Introduction

August 2002 − Revised August 2004

SPRS197D

Table 2−4. Signal Description (Continued)

SIGNAL

TYPE†

DESCRIPTION

GDY

BALL

GZG

BALL

Power Supplies (Continued)

CVDDA‡

Y21

R15

Analog supply voltage. Supplies power to ULPD DPLL which provides an internal

clock to the USB peripherals. NOTE: The voltage to this supply pin should be kept

as clean as possible to maximize performance.

power

DVDD1

A15,

A19,

E21,

L21,

U21,

AA11,

Y16

C12,

A14,

E14,

H13,

N16,

P9,

T12

I/O Supply Voltage 1. Supplies power to the majority of peripheral I/O buffers.

DVDD1 may be connected in common with the other DVDD supplies if the same

operating voltage is desired.

power

DVDD2

AA2

I/O Supply Voltage 2. Supplies power to the internal USB transceiver buffers.

DVDD2 may optionally be used for USB connect and disconnect detection by

connecting DVDD2 to the power from the USB bus in the system. DVDD2 may be

connected in common with the other DVDD supplies if the same operating voltage

is desired.

power

DVDD3

I/O Supply Voltage 3. Supplies power to the MCSI2 and McBSP2 peripheral I/O

buffers as well as GPIO[9:8] I/O buffers. The DVDD3 supply may operate within a

high-voltage or low-voltage range (see Section 5.2 for operating conditions).

DVDD3 may be connected in common with the other DVDD supplies if the same

operating voltage is desired.

power

DVDD4

A1,

A5,

A7,

B10,

B12

D3,

D5,

A5,

D8,

E10

I/O Supply Voltage 4. Supplies power to the SDRAM interface I/O buffers. The

DVDD4 supply may operate within a high-voltage or low-voltage range (see

Section 5.2 for operating conditions). DVDD4 may be connected in common with

the other DVDD supplies if the same operating voltage is desired.

power

DVDD5

C2,

E1,

H2,

L1,

P3,

R1,

H7,

D1,

F1,

K6,

L2,

L3,

I/O Supply Voltage 5. Supplies power to the FLASH interface I/O buffers. The

DVDD5 supply may operate within a high-voltage or low-voltage range (see

Section 5.2 for operating conditions). DVDD5 may be connected in common with

the other DVDD supplies if the same operating voltage is desired.

power

† I = Input, O = Output, Z = High-Impedance

‡ All core voltage supplies should be tied to the same voltage level (within 0.3 V). During system prototyping phases, it may be useful to maintain

a capability for independent measurement of core supply currents to facilitate power optimization experiments.

§ See Sections 5.6.1 and 5.6.2 for special VSS considerations with oscillator circuits.

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