Texas Instruments TMS320C6748 User Manual

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TMS320C6748
SPRS590G –JUNE 2009–REVISED JANUARY 2017 www.ti.com
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Specifications Copyright © 2009–2017, Texas Instruments Incorporated
(1) The RTC provides an option for isolating the RTC_CVDD from the CVDD to reduce current leakage when the RTC is powered
independently. If these power supplies are not isolated (CTRL.SPLITPOWER=0), RTC_CVDD must be equal to or greater than CVDD.
If these power supplies are isolated (CTRL.SPLITPOWER=1), RTC_CVDD may be lower than CVDD.
(2) DVDD18 must be powered even if all of the DVDD3318_x supplies are operated at 3.3V.
(3) When an external crystal is used oscillator (OSC_VSS, RTC_VSS) ground must be kept separate from other grounds and connected
directly to the crystal load capacitor ground. These pins are shorted to VSS on the device itself and should not be connected to VSS on
the circuit board. If a crystal is not used and the clock input is driven directly, then the oscillator VSS may be connected to board ground.
(4) These IO specifications apply to the dual-voltage IOs only and do not apply to DDR2/mDDR or SATA interfaces. DDR2/mDDR IOs are
1.8V IOs and adhere to the JESD79-2A standard.
5.3 Recommended Operating Conditions
NAME DESCRIPTION CONDITION MIN NOM MAX UNIT
Supply
Voltage
CVDD Core Logic Supply Voltage (variable)
1.3V operating point 1.25 1.3 1.35
V
1.2V operating point 1.14 1.2 1.32
1.1V operating point 1.05 1.1 1.16
1.0V operating point 0.95 1.0 1.05
RVDD Internal RAM Supply Voltage
456 MHz versions 1.25 1.3 1.35
V
375 MHz versions 1.14 1.2 1.32
RTC_CVDD
(1)
RTC Core Logic Supply Voltage 0.9 1.2 1.32 V
PLL0_VDDA PLL0 Supply Voltage 1.14 1.2 1.32 V
PLL1_VDDA PLL1 Supply Voltage 1.14 1.2 1.32 V
SATA_VDD SATA Core Logic Supply Voltage 1.14 1.2 1.32 V
USB_CVDD USB0, USB1 Core Logic Supply Voltage 1.14 1.2 1.32 V
USB0_VDDA18 USB0 PHY Supply Voltage 1.71 1.8 1.89 V
USB0_VDDA33 USB0 PHY Supply Voltage 3.15 3.3 3.45 V
USB1_VDDA18 USB1 PHY Supply Voltage 1.71 1.8 1.89 V
USB1_VDDA33 USB1 PHY Supply Voltage 3.15 3.3 3.45 V
DVDD18
(2)
1.8V Logic Supply 1.71 1.8 1.89 V
SATA_VDDR SATA PHY Internal Regulator Supply Voltage 1.71 1.8 1.89 V
DDR_DVDD18
(
2)
DDR2 PHY Supply Voltage 1.71 1.8 1.89 V
DDR_VREF DDR2/mDDR reference voltage
0.49*
DDR_DVDD18
0.5*
DDR_DVDD18
0.51*
DDR_DVDD18
V
DDR_ZP
DDR2/mDDR impedance control,
connected via 50Ω resistor to Vss
Vss V
DVDD3318_A
Power Group A Dual-voltage IO
Supply Voltage
1.8V operating point 1.71 1.8 1.89 V
3.3V operating point 3.15 3.3 3.45 V
DVDD3318_B
Power Group B Dual-voltage IO
Supply Voltage
1.8V operating point 1.71 1.8 1.89 V
3.3V operating point 3.15 3.3 3.45 V
DVDD3318_C
Power Group C Dual-voltage IO
Supply Voltage
1.8V operating point 1.71 1.8 1.89 V
3.3V operating point 3.15 3.3 3.45 V
Supply
Ground
VSS Core Logic Digital Ground
0 0 0 V
PLL0_VSSA PLL0 Ground
PLL1_VSSA PLL1 Ground
SATA_VSS SATA PHY Ground
OSCVSS
(3)
Oscillator Ground
RTC_VSS
(3)
RTC Oscillator Ground
USB0_VSSA USB0 PHY Ground
USB0_VSSA33 USB0 PHY Ground
Voltage
Input High
V
IH
High-level input voltage, Dual-voltage I/O, 3.3V
(4)
2 V
High-level input voltage, Dual-voltage I/O, 1.8V
(4)
0.65*DVDD V
High-level input voltage, RTC_XI 0.8*RTC_CVDD V
High-level input voltage, OSCIN 0.8*CVDD V
Voltage
Input Low
V
IL
Low-level input voltage, Dual-voltage I/O, 3.3V
(4)
0.8 V
Low-level input voltage, Dual-voltage I/O, 1.8V
(4)
0.35*DVDD V
Low-level input voltage, RTC_XI 0.2*RTC_CVDD V
Low-level input voltage, OSCIN 0.2*CVDD V

Texas Instruments TMS320C6748 Specifications

General

Brand	Texas Instruments
Model	TMS320C6748
Category	Control Unit
Language	English