The greenback extended the corrective upmove from Monday's 8-month low of 88.23 to 90.42 in Asian morning today before retreating, suggesting a top has possibly been made and consolidation with downside bias would be seen, however, breach of 89.15 support needed to confirm correction is over and yield resumption of recent decline for re-test of 88.23.  
On the upside, a breach of 90.47 would bring stronger retracement to 90.84 but resistance area at 91.59/63 is expected to remain intact.