LM4545VH National Semiconductor, LM4545VH Datasheet
LM4545VH
Specifications of LM4545VH
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LM4545VH Summary of contents
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... AC ’97 Controller. The separation of the analog and digital functions of the AC ’97 architecture allows for system design flexibility and in- creased overall performance. Block Diagram © 1999 National Semiconductor Corporation DS100069 Key Specifications n Analog Mixer Dynamic Range n D/A Dynamic Range ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Storage Temperature Input Voltage ESD Susceptibility (Note 5) pins 27, 28, 40 pin 3 ESD Susceptibility (Note 6) pin 3 Junction Temperature Soldering Information Electrical Characteristics The following specifications apply for AV for 0dB is 1Vrms unless otherwise specified ...
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Electrical Characteristics The following specifications apply for AV DD for 0dB is 1Vrms unless otherwise specified. Symbol Parameter Analog to Digital Converters Dynamic Range (Note 2) Frequency Response Digital to Analog Converters Resolution Dynamic Range (Note 2) THD Total Harmonic ...
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Electrical Characteristics The following specifications apply for AV for 0dB is 1Vrms unless otherwise specified. Symbol Parameter Digital Timing Specifications (Note 2) RESET# inactive to BIT_CLK start T RST2CLK up T SYNC active high pulse width SH T SYNC inactive ...
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Timing Diagrams Clocks DS100069-10 Data Setup and Hold DS100069-11 Digital Rise and Fall DS100069-12 Cold Reset DS100069-13 Warm Reset DS100069-14 5 www.national.com ...
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Typical Application FIGURE 2. LM4545 Typical Application Circuit www.national.com 6 DS100069-3 ...
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... The amount of AUX_L AUX_L 14 I signal mixed in the left output stream can be adjusted from +12dB to −34.5dB in 1.5dB steps as well as muted via register 16h. Top View Order Number LM4545VH See NS Package Number VBH48A 7 DS100069-2 www.national.com ...
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Pin Descriptions (Continued) Analog I/O (Continued) Name Pin Functional Description This line level input can be routed through the Input Mux and recorded by the right ADC. In addition, this analog input gets summed into the right ...
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Pin Descriptions (Continued) Analog I/O (Continued) Name Pin Functional Description This is a post-mixed output for the right audio channel. The level of this output can be adjusted from 0dB to −45dB in 1.5dB steps as well ...
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Typical Performance Characteristics ADC Noise Floor DS100069-15 Analog Loopthru Noise Floor DS100069-18 Headphone Amplifier - THD+N vs Frequency DS100069-21 www.national.com DAC Noise Floor DS100069-16 ADC Frequency Response DS100069-19 Headphone Amplifier - THD+N vs Output Power DS100069-22 10 Headphone Amplifier - ...
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11 www.national.com ...
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Application Information AC Link Serial Interface Protocol AC Link Output Frame The audio output frame (output from AC ’97 Controller and input to theLM4545 ) contains control and PCM data tar- geted for the LM4545 control register and stereo DAC. ...
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Application Information (Continued) Bit Description Comment Right 11 Playback 1 = Valid slot PCM Data SD_OUT Slot 1: Control Address Slot 1 is used both to write to the LM4545 registers as well as read back a register’s current value. ...
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Application Information Bit Description Comment Codec Ready 15 0=Not Ready, 1=Ready Bit Slot 1 data 14 Status Address is valid valid Slot 2 data 13 Status Data is valid valid Slot 3 data Left Audio PCM Data is 12 valid ...
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Application Information (Continued) Mute Gx4:Gx0 Function 0 00000 +12dB gain 0 01000 0dB gain 0 01111 34.5dB attenuation 1 XXXXX mute Default: 8008h (mono regs.), 8808h (stereo regs.) Record Select Register (1Ah) This register independently controls the source for the ...
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... National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. 48-Lead , TQFP 1.4mm, JEDEC (M) Order Number LM4545VH NS Package Number VBH48A 2. A critical component is any component of a life ...