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LM49350 Datasheet(PDF) 52 Page - Texas Instruments |
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LM49350 Datasheet(HTML) 52 Page - Texas Instruments |
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52 / 108 page  LM49350, LM49350RLEVAL SNAS359D – SEPTEMBER 2008 – REVISED JUNE 2012 www.ti.com Table 36. Audio Port 2 Input (0x43h) Bits Field Description 1:0 L_SEL This selects which input is fed to Audio Port 2's Left TX Channel. L_SEL Selected Input 00 None 01 ADC_L 10 PORT1_RX_L 11 DAC_INTERP_L 3:2 R_SEL This selects which input is fed to Audio Port 2's Right TX Channel. R_SEL Selected Input 00 None 01 ADC_R 10 PORT1_RX_R 11 DAC_INTERP_R 4 SWAP If set, this swaps the Left and Right outputs to Audio Port 2. The swap bit can be used to control which microphone is being used for audio port transmit. For example, if LEFT_MIC is used as a primary handset microphone and RIGHT_MIC is used a headset microphone, the SWAP bit allows the audio port to select one of the microphones at a time for audio port transmit via the ADC. 5 MONO If set, the right channel is ignored and the left channel becomes (left+right)/2. Table 37. DAC Input Select (0x44h) Bits Field Description 0 PORT1_L This adds Audio Port 1's left RX channel to the DAC's left input. 1 PORT2_L This adds Audio Port 2's left RX channel to the DAC's left input. 2 ADC_L This adds the ADC's left output to the DAC's left input 3 PORT1_R This adds Audio Port 1's right RX channel to the DAC's right input. 4 PORT2_R This adds Audio Port 2's right RX channel to the DAC's right input. 5 ADC_R This adds the ADC's right output to the DAC's right input. 6 SWAP If set, this swaps the Left and Right inputs to the DAC. Table 38. Decimator Input Select (0x45h) Bits Field Description 1:0 L_SEL This selects which input is fed to the left ADC's decimator input. L_SEL Selected Input 00 None 01 PORT1_RX_L 10 PORT2_RX_L 11 DAC_INTERP_L 3:2 R_SEL This selects which input is fed to the right ADC's decimator input. R_SEL Selected Input 00 None 01 PORT1_RX_R 10 PORT2_RX_R 11 DAC_INTERP_R 52 Submit Documentation Feedback Copyright © 2008–2012, Texas Instruments Incorporated Product Folder Links: LM49350 LM49350RLEVAL |
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