SINGAPORE, May 21 (AFP) - Asian currencies ended firmer across-the-board Friday against the US dollar in tandem with a higher Japanese yen, dealers said. The Singapore dollar climbed to 1.7198 against the greenback from Thursday's close of 1.7233 while the Indonesian rupiah was up to 8,045 against the dollar from 8,130. The Philippine peso rose to 37.865 from 37.89, the Thai baht to 37.00 from 37.13, the Taiwan dollar to 32.7885 from 32.825 and the South Korean won to 1,193.00 from 1,196.50. The yen ended Asian trading higher at 123.85 against the dollar from its New York close of 124.27 and Singapire close of 124.60 on Thursday. "Dollar-yen trading was choppy and within a one yen range," said analyst Christy Tan of financial consultancy IDEA. The dollar's fall came even though Japanese Finance Minister Kiichi Miyazawa said the US currency, now close to a seven-month high against the yen, had not risen too far against the Japanese unit. Asked if he thought the dollar's sudden rise against the yen this week was an overshoot, Miyazawa said: "No, I do not."  