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Connector and Test Point Descriptions

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For correct functioning of VDD3, first VAUX33 must be enabled at 3.3V and then VDD3 should be enabled

using the appropriate register settings.

4.1.5 I

C connector

TPS65910 has two slave I

C interfaces: one is a general-purpose interface to control the internal

configuration registers, the second is dedicated to SmartReflex applications such as dynamic voltage

frequency scaling (DVFS) or adaptive voltage scaling (AVS).

These interfaces support the standard slave mode (100 kbps), fast mode (400 kbps), and high-speed

mode (3.4 Mbps).

Table 6. I

C Connector

CONNECTOR NUMBER PIN DESCRIPTION

General purpose I

C interface for register

J1 9, 10

configuration

J2 9,10 Dedicated I

C interface for SmartReflex

J1 and J2 also have GPIO, SLEEP, and PWRHOLD signals that can be controlled from the GUI and USB-

to-GPIO interface.

The SmartReflex can be programmed as enable signals of one or several supplies when the device is on.

A resource assigned to either SmartReflex signal (SDASR_EN2 or SCLSR_EN1) automatically disables

the serial control interface.

Connectors J1 and J2 are used for the USB adapter. Table 7 lists the signal mapping to control the

signals on the EVM. The GPIO field on the GUI can be toggled to drive the following signals on the EVM.

Table 7. GPIO Mapping For GUI

PIN NUMBER FOR J1 and J2 GPIO ON GUI TPS65910x SINGAL

Pin 1 GPIO7 SLEEP

Pin 2 GPIO6 GPIO

Pin 3 GPIO5 PWRHOLD

4.1.6 3.3-V I/O for VDDIO

The USB-to-GPIO interface is on connectors J1 and J2. The USB-to-GPIO module generates 3.3 V, which

is used as the I/O for the EVM. The following jumper configuration must be done for the I/O supply.

Table 8. Jumper for I/O Input Setting

JUMPER CONNECTION DEVICE INPUT PIN USE

Connects J1-5 (or J2-5) to VDDIO for 3.3-

J11 (1-2) VDDIO

V I/O input

4.1.7 Control Jumper Settings

TPS65910 has some control signals that can be configured using the on-board jumpers or by using the

USB-to-GPIO connector.

Table 9. Control Signals

Jumper connection Signal Name Use

J18 GPIO Jumper the three pin connector as

required

J19 SLEEP Jumper the three pin connector as

required

Introduction SWCU065F–March 2010–Revised April 2013

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