Transceiver Macro with Spread-Spectrum Clocking Capability for AC-Coupled Cable Interfaces

Takefumi YOSHIKAWA; Yoshihide KOMATSU; Tsuyoshi EBUCHI; Takashi HIRATA

doi:10.1093/ietele/e91-c.9.1444

Transceiver Macro with Spread-Spectrum Clocking Capability for AC-Coupled Cable Interfaces

Takefumi YOSHIKAWA, Yoshihide KOMATSU, Tsuyoshi EBUCHI, Takashi HIRATA

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A transceiver macro for high-speed data transmission via cable in vehicles is proposed. The transceiver uses ac coupling and bi-directional interface topology for protecting LSIs against unexpected short of cable and harness/chassis and has a spread-spectrum-clocking (SSC) generator that reduces noise due to electromagnetic interference. A driver current control has been used for fast switching of data direction on ac-coupled interfaces. An adaptive bandwidth control has been used in a Δ ∑ PLL to improve SCC significantly. A test chip has been fabricated and shows stable and bi-directional data communication with data rate of 162 to 972 Mbps through 20-m cable. Thanks to an optimum calibration of the SSC-PLL bandwidth, it reduces peak power at 33 kHz by -23 dB and provides 2% modulation at a data rate of 810 Mbps.

Publication: IEICE TRANSACTIONS on Electronics Vol.E91-C No.9 pp.1444-1452

Publication Date: 2008/09/01

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Online ISSN: 1745-1353

DOI: 10.1093/ietele/e91-c.9.1444

Type of Manuscript: Special Section PAPER (Special Section on Advanced Processors Based on Novel Concepts in Computation)

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Takefumi YOSHIKAWA, Yoshihide KOMATSU, Tsuyoshi EBUCHI, Takashi HIRATA, "Transceiver Macro with Spread-Spectrum Clocking Capability for AC-Coupled Cable Interfaces" in IEICE TRANSACTIONS on Electronics, vol. E91-C, no. 9, pp. 1444-1452, September 2008, doi: 10.1093/ietele/e91-c.9.1444.
Abstract: A transceiver macro for high-speed data transmission via cable in vehicles is proposed. The transceiver uses ac coupling and bi-directional interface topology for protecting LSIs against unexpected short of cable and harness/chassis and has a spread-spectrum-clocking (SSC) generator that reduces noise due to electromagnetic interference. A driver current control has been used for fast switching of data direction on ac-coupled interfaces. An adaptive bandwidth control has been used in a Δ ∑ PLL to improve SCC significantly. A test chip has been fabricated and shows stable and bi-directional data communication with data rate of 162 to 972 Mbps through 20-m cable. Thanks to an optimum calibration of the SSC-PLL bandwidth, it reduces peak power at 33 kHz by -23 dB and provides 2% modulation at a data rate of 810 Mbps.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e91-c.9.1444/_p

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@ARTICLE{e91-c_9_1444,
author={Takefumi YOSHIKAWA, Yoshihide KOMATSU, Tsuyoshi EBUCHI, Takashi HIRATA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Transceiver Macro with Spread-Spectrum Clocking Capability for AC-Coupled Cable Interfaces},
year={2008},
volume={E91-C},
number={9},
pages={1444-1452},
abstract={A transceiver macro for high-speed data transmission via cable in vehicles is proposed. The transceiver uses ac coupling and bi-directional interface topology for protecting LSIs against unexpected short of cable and harness/chassis and has a spread-spectrum-clocking (SSC) generator that reduces noise due to electromagnetic interference. A driver current control has been used for fast switching of data direction on ac-coupled interfaces. An adaptive bandwidth control has been used in a Δ ∑ PLL to improve SCC significantly. A test chip has been fabricated and shows stable and bi-directional data communication with data rate of 162 to 972 Mbps through 20-m cable. Thanks to an optimum calibration of the SSC-PLL bandwidth, it reduces peak power at 33 kHz by -23 dB and provides 2% modulation at a data rate of 810 Mbps.},
keywords={},
doi={10.1093/ietele/e91-c.9.1444},
ISSN={1745-1353},
month={September},}

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TY - JOUR
TI - Transceiver Macro with Spread-Spectrum Clocking Capability for AC-Coupled Cable Interfaces
T2 - IEICE TRANSACTIONS on Electronics
SP - 1444
EP - 1452
AU - Takefumi YOSHIKAWA
AU - Yoshihide KOMATSU
AU - Tsuyoshi EBUCHI
AU - Takashi HIRATA
PY - 2008
DO - 10.1093/ietele/e91-c.9.1444
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E91-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2008
AB - A transceiver macro for high-speed data transmission via cable in vehicles is proposed. The transceiver uses ac coupling and bi-directional interface topology for protecting LSIs against unexpected short of cable and harness/chassis and has a spread-spectrum-clocking (SSC) generator that reduces noise due to electromagnetic interference. A driver current control has been used for fast switching of data direction on ac-coupled interfaces. An adaptive bandwidth control has been used in a Δ ∑ PLL to improve SCC significantly. A test chip has been fabricated and shows stable and bi-directional data communication with data rate of 162 to 972 Mbps through 20-m cable. Thanks to an optimum calibration of the SSC-PLL bandwidth, it reduces peak power at 33 kHz by -23 dB and provides 2% modulation at a data rate of 810 Mbps.
ER -