dakshiNaamoorti is Siva in meditation who is considered to be a God of learning and wisdom. He and gaNapati are considered to be present in all temples, irrespective of what the deity is, on the south side.
“maunamaatreNaalmatatva prapancana vicakshaNa
tapasvinam namskurmo dakshiNaamoorti meesvaram”
I prostrate before (namaskurmo =namah+kurmah) to the almighty lord (eesvaram) who is dakshNiaamoorti (dakshiNaamoortim) who has great meditative powers (tapasvinam) and who is adept in conveying the truth or secret of the self (aalmatatva prapancana vicakshaNa) through silence (maunamaatreNa). dakshiNaamoorti means a deity facing, the lord of or sitting on the, south side.