  The eastern tip region of the Carina Nebula was observed with the Suzaku XIS
for 77 ks to conduct a high-precision spectral study of extended X-ray
emission. XMM-Newton EPIC data of this region were also utilized to detect
point sources. The XIS detected strong extended X-ray emission from the entire
field-of-view with a 0.2--5 keV flux of $0.7\sim4\times10^{-14}$ erg s$^{-1}$
arcmin$^{-2}$. The emission has a blob-like structure that coincides with an
ionized gas filament observed in mid-infrared images. Contributions of
astrophysical backgrounds and the detected point sources were insignificant.
Thus the emission is diffuse in nature. The X-ray spectrum of the diffuse
emission was represented by a two-temperature plasma model with temperatures of
0.3 and 0.6 keV and an absorption column density of 2$\times10^{21}$ cm$^{-1}$.
The X-ray emission showed normal nitrogen-to-oxygen abundance ratios and a high
iron-to-oxygen abundance ratio. The spectrally deduced parameters, such as
temperatures and column densities, are common to the diffuse X-ray emission
near $\eta$ Car. Thus, the diffuse X-ray emission in these two fields may have
the same origin. The spectral fitting results are discussed to constrain the
origin in the context of stellar winds and supernovae.
