Texas Instruments TPS65910 EVM, User Manual

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Connector and Test Point Descriptions
4 Connector and Test Point Descriptions
4.1 Connector Descriptions
4.1.1 Boot Pins
J16 and J17 are used to select the boot pin configuration for proper booting of the device. Table 2 shows
the possible boot options.
Table 2. Boot Configuration
BOOT 0 BOOT 1 POWER UP OPTION
0 0 AM35xx
0 1 EEPROM boot mode
1 0 OMAP3x
1 1 Test mode only
4.1.2 Backup Battery
J6 is used for the backup battery connection. The user can connect a backup battery between J6-2 and
J6-3 or alternatively can use the onboard 0.2 F, 3.3 V capacitor by shorting J6-1 and J6-2.
4.1.3 VBAT
VBAT (J4) is the main input source to the device. Table 3 lists the minimum and maximum levels that can
be applied to these pins. Use J5 for ground.
Table 3. VBAT Minimum and Maximum Levels
MIN (V) TYP (V) MAX (V)
VBAT
2.7 3.6 5.5
Ensure that the jumper settings for the jumpers listed in Table 4 are correct so the device is supplied by
VBAT.
Table 4. VBAT Input Jumper Settings
JUMPER CONNECTION DEVICE INPUT PIN USE
J7 (1-2) VCC5 Selects VBAT as power source
J8 (1-2) VCC3 Selects VBAT as power source
J9 (1-2) VCC2, VCC4 Selects VBAT as power source
J10 (2-3) VCC6 Selects VBAT as power source
4.1.4 Default Jumper Settings for the Boost Converter
Table 5. Boost Converter Jumper Settings
JUMPER ID LABEL USE
J21 SW3 Short jumper to use boost converter
J22 VFB3 Short jumper to use boost converter
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
2
C connector
TPS65910 has two slave I
2
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).
5 SWCU065E – March 2010 – Revised May 2011 Introduction
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