A Clock Generator with Clock Period, Duty-Ratio and I/Q-Balance Adjustment Capabilities for On-Chip Timing-Margin Tests
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概要
- 論文の詳細を見る
A 4-phase clock generator, which can dynamically change clock frequencies, duty ratios and I/Q balance, is proposed for on-chip timing margin testing. The clock generator macro is integrated into the microprocessor chip of the supercomputer SX-9, which is fabricated with a 65nm CMOS technology. It demonstrates frequency syntheses of 1.68GHz to 3GHz range, an instant frequency change capability for timing margin testing, duty ratio and I/Q balance adjustments of -12.5ps to 9.4ps with a 3.125ps step resolution.
- 2011-01-01
著者
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KAERIYAMA Shunichi
NEC Corporation
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KAJITA Mikihiro
NEC Corporation
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MIZUNO Masayuki
NEC Corporation
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Kajita Mikihiro
Nec Corp.
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Kaeriyama Shunichi
Nec Corp. Sagamihara‐shi Jpn
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- A Clock Generator with Clock Period, Duty-Ratio and I/Q-Balance Adjustment Capabilities for On-Chip Timing-Margin Tests