SPRS841E March 2012 – October 2019 TMS320C6652 , TMS320C6654
PRODUCTION DATA.
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The following sections describe the proper power-supply sequencing and timing needed to properly power on the C6654 and C6652. The various power supply rails and their primary function is listed in Table 6-1.
NAME | PRIMARY FUNCTION | VOLTAGE | NOTES |
---|---|---|---|
CVDD | SmartReflex core supply voltage | 0.85 V - 1.1 V | Includes core voltage for DDR3 module |
CVDD1 | Core supply voltage for memory array | 1.0 V | Fixed supply at 1.0 V |
VDDT1 | Reserved | 1.0 V | Connect to CVDD1 |
VDDT2 | SGMII/PCIE SerDes termination supply | 1.0 V | Filtered version of CVDD1. Special considerations for noise. Filter is not needed if SGMII/PCIE is not in use. C6654 only. |
DVDD15 | 1.5-V DDR3 IO supply | 1.5 V | |
VDDR1 | Reserved | 1.5 V | Connect to DVDD15 |
VDDR2 | PCIE SerDes regulator supply | 1.5 V | Filtered version of DVDD15. Special considerations for noise. Filter is not needed if PCIE is not in use. C6654 only. |
VDDR3 | SGMII SerDes regulator supply | 1.5 V | Filtered version of DVDD15. Special considerations for noise. Filter is not needed if SGMII is not in use. C6654 only. |
VDDR4 | Reserved | 1.5 V | Connect to DVDD15 |
DVDD18 | 1.8-V IO supply | 1.8 V | |
AVDDA1 | Main PLL supply | 1.8 V | Filtered version of DVDD18. Special considerations for noise. |
AVDDA2 | DDR3 PLL supply | 1.8 V | Filtered version of DVDD18. Special considerations for noise. |
VREFSSTL | 0.75-V DDR3 reference voltage | 0.75 V | Should track the 1.5-V supply. Use 1.5 V as source. |
VSS | Ground | GND |