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Revision 0.1
OMAP4460 Pandaboard ES
System Reference Manual
September 29, 2011
DOC-21054
2.4
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System and connecting peripherals
TPS62361 External Power Supply (VDD_MPU)
The VDD_MPU balls on the OMAP4460 processor that power the ARM cores are supplied by an
external switch mode supply at U25. This device is a Texas Instruments TPS62361 switch mode supply
that is controllable via the smart reflex I2C interface of the OMAP4460 processor. Additionally, the
VSEL0 ball of the converter is controlled by an OMAP GPIO (GPIO_WK7). This part may be found on
sheet 2 of the schematics.
2.5
TWL6030 Power Companion IC
The TWL6030 device is a small (7 x 7 mm, 0.4mm pitch) 256 ball FBGA that provides many functions
used on the Platform. Shown below is a feature list of the major functions/interfaces provided by the
TWL6030 device that are utilized on the Panda platform. This list below doesn’t include all device
functionality, just that which is used on the Pandaboard ES.
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A power management system (FSM)
1 HS-I2C interface ( ≤ 2.4Mbits/s) for all Phoenix Power IC GP control commands (CTL-I2C)
1 HS-I2C interface ( ≤ 2.4Mbits/s) for all Smart-Reflex Class 3 control commands (SR-I2C)
MMC card detection mechanism
A 24MHz RC oscillator
A 32kHz RC oscillator for a fast device start-up
A high-performance crystal oscillator, for 32.768kHz external crystal
A Real Time Clock (RTC) resource
Power supply resources:
o
11 Low Drop Out (LDO) regulators
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1 for internal purposes only (VRTC)
1 for internal and platform needs (VANA)
9 for platform needs (VAUX1, VAUX2, VAUX3, VCXIO, VDAC, VMMC,
VPP, VUSB, VUSIM)
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7 buck SMPS with:
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DVS capability Smart-Reflex Class 3 compatible (VCORE1, VCORE2,
VCORE3)
1 for I/O supply (V1V8), with specific PWMFORCE input control
1 for LDOs pre-regulation (V2V1) and Phoenix Audio features
1 for memory supply (VMEM)
1 for external modem, RF transceiver or I/Os (V1V29)
? 3 general-purpose enables for possible platform upgrades (REGEN1, REGEN2, SYSEN)
Page 18 of 82
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