Laser drivers that provide double buffering of serial transfers
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United States of America Patent
Stats
-
Jul 14, 2009
Grant Date -
Jun 12, 2008
app pub date -
Feb 12, 2008
filing date -
May 29, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
Double buffering of serial transfers is provided in order to allow for increased serial transfer rate without requiring increased internal processing speeds. A laser driver serial controller serially receives a word including address bits and data bits. During a write operation, the address bits are serially shifted into an address shift register of the laser driver, and the data bits are serially shifted into a data shift register of the laser driver. After the address bits and data bits are completely shifted into the respective address and data shift registers, the address bits and data bits are transferred in parallel to address and data holding registers of the laser driver. After the parallel transfers of the address bits and data bits from the address and data shift registers to the address and data holding registers, the address and data shift registers are available to serially receive additional address bits and data bits of an additional word.
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