SM5921A
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The SM5921A is an SDRAM controller LSI for audio applications. It stores 64-fs slot 3-wire serial format audio data input at sampling frequency fs in SDRAM, and can access data at an arbitrary address to add a delay to each channel data. It also has a direct mute function to mute the audio data. Operating voltage is 3 to 3.6V and is supplied in 64-pin QFP
SM5921A.pdf
The SM5921A is an SDRAM controller LSI for audio applications. It stores 64-fs slot 3-wire serial format audio data input at sampling frequency fs in SDRAM, and can access data at an arbitrary address to add a delay to each channel data. It also has a direct mute function to mute the audio data. Operating voltage is 3 to 3.6V and is supplied in 64-pin QFP
Datasheets
SM5921A.pdfKey Features
- System clock input
- 64fs (fs = 32 to 192kHz) bit clock
- Sampling frequency : fs = 32 to 192kHz support
- Data input/output
- 3-wire serial, 8-channel PCM
- 64 clock/slot, word clock polarity inversion
- Direct mute function
- MCU interface : 3-wire serial
- Delay settings : sum of intrinsic delay and individual delay
- Intrinsic delay (common to all channels, default = 0 samples, 16-sample units)
- Individual delay (independent for each channel, default = 0 samples, 1-sample units)
- Maximum delay values
- 1365.3ms @ fs = 48kHz
- 682.7ms @ fs = 96kHz
- 341.3ms @ fs = 192kHz
- Address shift function :x1, x2, x4 support
- Delay time can be multiplied between x1, x2, or x4 times without changing the delay set value.
- SDRAM interface : 16M/64M/128M (x16 devices supported)
- Package:LQFP-64-100100-1
