Texas Instruments TPS65910 EVM, User Manual

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Connector and Test Point Descriptions
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These interfaces support the standard slave mode (100 kbps), fast mode (400 kbps), and high-speed
mode (3.4 Mbps).
Table 6. I
2
C Connector
CONNECTOR NUMBER PIN DESCRIPTION
General purpose I
2
C interface for register
J1 9, 10
configuration
J2 9,10 Dedicated I
2
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
J11 (1-2) VDDIO
3.3-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
J20 PWRHOLD If PWRHOLD is low then the device will
not power-up. So, connect this to HI side
of the jumper. See important description
below.
J13 SDASR_EN2 Both these signals can be used to control
the LDO and SMPS power supplies.
J14 SCLSR_EN1
Please refer details on programming the
internal register to achieve this function.
6 Introduction SWCU065E – March 2010 – Revised May 2011
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