An emission treatment system including a catalyzed soot filter comprising a wall flow monolith and a catalyst comprising at least two types of support particles is described. The resettable ferromagnetic thermal switch includes a resilient arm having a ferromagnetic aspect associated therewith, an electrical contact including a stationary contact component and a movable contact component located at a distal location of the resilient arm, and a magnet located on one side of the resilient arm. As the choke there is used a channel-like, triangular or star-shaped interrupt ion or cut-out. A signal indicative of whether the adapter’s write buffers are full is used to determine whether a write transaction to the adapter can proceed.