Have you done any mp3 decoding in software ? Janek -----Original Message----- From: Peter Kuhar [mailto:peter.kuhar@...] Sent: Wednesday, February 11, 2004 16:48 To: Robert Buadu Subject: Re[2]: [lpc2100] Audio DAC > Say we want to output 44.1kHz stereo data. That needs a minimum clock of > 44100 * 16bit * 2 channels = 1411200Hz (1,4MHz).Some chips require a > minimum clock of clock of 256*fs. That is way too fast. We need to run > the chip in slave mode and provide a clock for the data. It's not actualy that fast 256*fs means that clock is 256*44100 11.286600 MHz A managed to connects philips DAC (in 16 bit left-aligned mode which is close to I2S) using software, SPI and PWM. But it takes to much processor time. Just enaught to decode mp3 from internal flash. But I dont have enoug time left to read from SD card. What about connecting DAC to UART using somekind of converter. I was thinking: 8 pin MCU. /Pero > Peter Kuhar wrote: >> Hello, >> >> Has anyone connected audio DAC to LPC210x? >> >> >> /Pero >> >> >> >> >> >> Yahoo! Groups Links >> >> >> >> >> >> > Yahoo! Groups Links _____ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/lpc2100/ * To unsubscribe from this group, send an email to: lpc2100-unsubscribe@yahoogroups.com <mailto:lpc2100-unsubscribe@yahoogroups.com?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .
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RE: Re[2]: [lpc2100] Audio DAC
2004-02-11 by Jan Szymanski