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专利名称：FREQUENCY OFFSET AND METHOD OF
OFFSETTING
发明人：GEHRING, MARK, R.,MOEN, RUSSELL,
R.,JENSEN, BRENT, J.
申请号：US2006060106申请日：20061020
公开号：WO2007051084A3公开日：20071213
摘要：A transmitter digital signal processor (DSP) circuit has a transmit frequencyrepresented by n-bit data output from a look up table (LUT). The n-bit data is outputtedto an n-bit accumulator structured to overflow at a rate based on the output n-bit datato output a phase. The circuit further has device structured to add an n-bit signedconstant to the accumulator to offset the frequency represented by the n-bit dataoutput from the LUT. A transceiver on a semiconductor chip may include as part of atransmitter circuit, a transmit DSP circuit that has the LUT, accumulator and deviceproviding an n-bit signed constant to the accumulator to offset a transmit frequency inorder to allow a receiver circuit on the transceiver to communicate directly with thetransmitter circuit, and thus allowing testing of the transceiver.
申请人：CYPRESS SEMICONDUCTOR CORPORATION,GEHRING, MARK, R.,MOEN,RUSSELL, R.,JENSEN, BRENT, J.
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