Reset Circuit for the TMS320C6000 DSP
David Elliott Bell · 1999
This document describes two solutions used to provide a reset circuit to the Texas Instruments (TI™) TMS320C6000 digital signal processor (DSP). One solution sets a supply voltage supervisor, such as the TI TLC7733 and TLC7725, on each of the supply voltages, DVdd and CVdd. Another solution monitors both the 2.5-V/1.8-V and 3.3-V power supplies using a single supervisor such as the TI TPS3707. This allows the DSP to be released from reset only if both its power supplies are at the proper levels.. To ensure that the TMS320C6000 does not generate signals unless the supply voltages are at appropriate levels, it is necessary to place a supervisor on the power supplies. Whenever the device is powered up, it should be held in reset until both the 3.3-V I/O supply (DVdd) and the 2.5-V core supply (CVdd) reach nominal values. Likewise, the device should be held in reset anytime either supply falls below a certain threshold value (88%).