AM5728 datasheet(10/415 Pages) TI

10 / 415 page

AM5728, AM5726

SPRS915O – MARCH 2014 – REVISED OCTOBER 2015

www.ti.com

Table 4-1. Unused Balls Specific Connection Requirements (continued)

Balls

Connection Requirements

These balls must be connect to the corresponding power supply

AF14 / V28 / F18 / E20 / E23 / D21 / C20 / C21

through an external pull resistor if unused

AB17

This ball must be connected to F22 (porz) if unused

NOTE

All other unused signal balls with a Pad Configuration Register can be left unconnected with

their internal pullup or pulldown resistor enabled.

NOTE

All other unused signal balls without Pad Configuration Register can be left unconnected.

4.2

Ball Characteristics

Table 4-2 describes the terminal characteristics and the signals multiplexed on each ball. The following list

describes the table column headers:

1. BALL NUMBER: Ball number(s) on the bottom side associated with each signal on the bottom.

2. BALL NAME: Mechanical name from package device (name is taken from muxmode 0).

3. SIGNAL NAME: Names of signals multiplexed on each ball (also notice that the name of the ball is the

signal name in muxmode 0).

NOTE

Table 4-2 does not consider the subsystem multiplexing signals. Subsystem multiplexing

signals are described in Section 4.4, Signal Descriptions.

NOTE

In the Driver off mode, the buffer is configured in high-impedance.

4. 28/26: This column shows if the functionality is applicable for AM5728 / AM5726 devices. Note that the

ball characteristics table presents a functionality of super set. If the cell is empty it means that the

signal is available in all devices.

28 - AM5728

26 - AM5726

5. MUXMODE: Multiplexing mode number:

(a) MUXMODE 0 is the primary muxmode; this means that when MUXMODE=0, the function mapped

on the pin corresponds to the name of the pin. The primary muxmode is not necessarily the default

muxmode.

NOTE

The default muxmode is the mode at the release of the reset; also see the RESET REL.

MUXMODE column.

(b) MUXMODE 1 through 15 are possible muxmodes for alternate functions. On each pin, some

muxmodes are effectively used for alternate functions, while some muxmodes are not used. Only

MUXMODE values which correspond to defined functions should be used.

6. TYPE: Signal type and direction:

–

I = Input

–

O = Output

Terminal Configuration and Functions

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