Ti 2p3/2 = 455.5 eV +/-0.4 eV
N 1s = 397.1 +/-0.3 eV
The Ti 2p peak for the nitride appears to have an asymmetric in shape and can, in lower resolution work, be fit similar to the metal.
Recent, excellent, high resolution work by Jaeger and Patscheider  shows that the asymmetry is comprised of several shake-ups and plasmons. Bulk and surface plasmons for the Ti 2s peak and N 1s peak are also found in this paper.
An excellent account of the species present (Ti and N) in an air exposed film of titanium nitride is presented in reference 2.
 D. Jaeger, J. Patscheider, J. Electron Spectrosc. Relat. Phenom. 185 (2012) 523-534.
 N.C. Saha, H.G. Tompkins, J. Appl. Phys. 72 (1992) 1.