| No | 214163 |
|---|---|
| 標題（和） | 400ppmの送受信周波数偏差に対応可能なシリアルATA用PHY |
| 標題（英） | A Low-Jitter 1.5-GHz and Large-EMI reduction 10-dBm Spread-Spectrum Clock Generator for Serial-ATA |
| 研究会名（和） | 回路とシステム, 通信方式, 信号処理 |
| 研究会名（英） | Circuits and Systems, Communication Systems, Signal Processing |
| 開催年月日 | 2012-03-08 |
| 終了年月日 | 2012-03-09 |
| 会議種別コード | 5 |
| 共催団体名（和） | |
| 資料番号 | CAS2011-129, SIP2011-149, CS2011-121 |
| 抄録（和） | |
| 抄録（英） | A low-jitter and large-EMI-reduction spread spectrum clock generator (SSCG) for Serial-ATA (SATA) was developed. A low-jitter voltage-controlled oscillator (VCO) with a high-frequency limiter was developed to prevent the SSCG from malfunctioning. This VCO achieved far less jitter than that of a conventional VCO. An auto-calibration technique suitable for this VCO was developed to prevent the SSCG from degrading performance because of process variations. A SATA-PHY using a technique for calibrating the SSCG was developed to use an inexpensive but large frequency-variation reference oscillator. This technique was used to calibrate the SSCG output-signal frequency. This is achieved by shifting an SSCG divide ratio by utilizing the difference between an SSCG output signal frequency and a received signal frequency. These techniques were fabricated in 0.13- and 0.15-um CMOS processes. The proposed SSCG achieved a 10.0-dB reduction in EMI. The variation in the rms jitter at 1.5 GHz with spread-spectrum clocking was reduced from 2.1-7.8 ps to 1.9-3.3 ps by the proposed autocalibration technique. The proposed SATA PHY achieved less than 400-ppm production-frequency tolerance of reference clocks. |
| 収録資料名（和） | 電子情報通信学会技術研究報告 |
| 収録資料の巻号 | Vol.111, No.465,466,467 |
| ページ開始 | 125 |
| ページ終了 | 130 |
| キーワード（和） | SSCG,CDR,PLL,シリアルATA |
| キーワード（英） | SSCG,CDR,PLL,Serial-ATA |
| 本文の言語 | JPN |
| 著者（和） | 川本高司 |
| 著者（ヨミ） | カワモト タカシ |
| 著者（英） | Takashi Kawamoto |
| 所属機関（和） | 日立 |
| 所属機関（英） | Hitachi |
| 著者（和） | 鈴木正人 |
| 著者（ヨミ） | スズキ マサト |
| 著者（英） | Masato Suzuki |
| 所属機関（和） | ルネサスエレクトロニクス |
| 所属機関（英） | Reness Electronics |