CS5535 datasheet(19/555 Pages) NSC

19 / 555 page

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Signal Definitions (Continued)

2.1

BALL ASSIGNMENTS

As illustrated in Figure 2-1 on page 18, the CS5535 is con-

figurable. Boot options and register programming are used

to set various modes of operation and specific signals on

specific balls.

This section describes the ball assignments and interface

options:

• Figure 2-2 "208-PBGA Ball Assignment Diagram" on

page 20:

— Top view looking through package.

• Table 2-2 "Ball Assignments: Sorted by Ball Number" on

page 21:

— Primary signal name is listed first.

— Includes a column labeled Buffer Type. See Section

2.1.1 "Buffer Types" on page 28 for details.

— Includes a column labeled Configuration with refer-

ences to:

– BOS[1:0] - See Section 2.1.2 "Boot Options" on

page 29.

– Ball Opt MSR - See Section 2.1.3 "Ball Options"

on page 29.

– AUX_IN, AUX_OUT_1, and AUX_OUT_2 - See

Section 2.2.8 "GPIOs" on page 42.

• Table 2-3 "Ball Assignments: Sorted Alphabetically by

Signal Name" on page 25:

— Quick-reference list, sorted alphabetically with

primary signal listed first.

The tables in this section use several abbreviations. Table

2-1 lists the mnemonics and their meanings.

Table 2-1. Abbreviations/Definitions

Mnemonic

Definition

Analog

AVSS

Analog Ground Connection

AVDD

Analog Power Connection

GND

Ground

Input

I/O

Bidirectional

Output

Open-drain

Ball Opt MSR

Model Specific Register Ball Options: A register is used to configure balls with multiple functions.

Refer to Section 2.1.3 "Ball Options" on page 29 for further details.

Pull-down resistor

PWR

Power

Pull-up resistor

TRI-STATE

VCORE

1.5V Core Power Working Connection

VCORE_VSB

1.5V Core Power Standby Connection

VIO

3.3V I/O Power Working Connection

VIO_VSB

3.3V I/O Power Standby Connection

VSS

Ground

The “#” symbol at the end of a signal name indicates that the active, or asserted state occurs when

the signal is at a low voltage level. When “#” is not present after the signal name, the signal is asserted

when at a high voltage level.

A “/” in a signal name indicates the function is always enabled (i.e., time multiplexed - available when

needed).

A “+” in a signal name indicates the function is available on the ball, but that either strapping options or

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