Texas Instruments eInfochips TMDXEVM6657L, Technical Reference Manual, Page: 54 / 91

Technical Reference Manual TMDXEVM6657L
SPRUHG7 - Revised August 2012
TMDXEVM6657LE
Page 54 / 90
4. C6657 Lite EVM System Power Requirements
This chapter describes the power design of C6657 Lite EVM board. It contains:
4.1
Power Requirements
4.2
Power Supply Distribution
4.3
Power Supply Boot Sequence
4.1 Power Requirements
Note that the power estimates stated in this section are maximum limits used in the design of the EVM. They
have margin added to allow the EVM to support early silicon samples that normally have higher power
consumption than eventual production units.
The maximum EVM power requirements (including 5% margin) are estimated to be:

FPGA
– 0.62W

Clock Generator & clock sources
– 1.73W

DSP
– 4.35W (worse case)
o
Core Supply: 3.7W
o
Peripheral supplies: 0.65W

DDR3
– 2.60W (including ECC chip), 1.73W (without ECC)

PHY
– 3.07W

USB
– 0.86W

Misc
– 1.23W

XDS560v2 Mezzanine (if used)
– 4.2W
Total EVM Board Consumption is 22.18W approx. Hence, the selected AC/DC 12V adapter should be rated for a
minimum of 22.5 Watts.
Table 4.1: Current Consumption on Each Voltage Rail
Device Net Name Voltage Current Qty Power Usage Description
Input
3.3V_MP_AMC +3.30V MMC Management Power
VCC12 +12.00V Payload Power to AMC
Management
VCC3V3_AUX +3.30V 3.3V Power Rail
VCC1V2 +1.20V 1.2V Power Rail
VCC1V8_AUX +1.80V 1.8V Power Rail
TMS320C6657
CVDD +1.00V 2.500A 1 2.50W
4.22W
DSP Core Power
VCC1V0 +1.00V 1.100A 1 1.10W DSP Fixed Core Power
VCC1V8 +1.80V 0.050A 1 0.09W DSP I/O Power
VCC1V5 +1.50V 0.350A 1 0.53W DSP DDR3 & SERDES Power
DDR3 Memory
VCC1V5 +1.50V 0.530A 3 2.39W
2.50W
DDR3 RAM Power
VCC0V75 +0.75V 0.050A 3 0.11W DDR3 Termination Power
NAND Flash VCC1V8 +3.30V 0.015A 1 0.05W 0.05W NAND Flash Power
NOR Flash VCC1V8 +1.80V 0.010A 1 0.02W 0.02W SPI NOR Flash Power
CDCE62005 VCC3V3_AUX +3.30V 0.500A 1 1.65W 1.65W Clock Gen Power