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SAA2003H датащи(PDF) 13 Page - NXP Semiconductors |
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SAA2003H датащи(HTML) 13 Page - NXP Semiconductors |
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13 / 44 page ![]() May 1994 13 Philips Semiconductors Preliminary specification Stereo filter and codec SAA2003 SERIAL AUDIO INTERFACE DATA FORMATS IN ENCODING MODE In encoding mode, the serial audio data input for the PASC processor is taken from the SD1 pin. This data is scaled by the fade processor before being sent to the PASC processor. The output from the fade processor is sent in parallel to the SD2 output. Both I2S and EIAJ formats are supported. Table 4 Serial audio data interface formats in encoding mode. Note 1. If SD1 is used in EIAJ mode, and the data from SD2 is required, the IECOP can be re-programmed to provide a suitable I2S WS signal for SD2. The IEC 958 output is not available in this mode. SERIAL AUDIO INTERFACE DATA FORMATS IN DECODING MODE In decoding mode, the output from the PASC processor, connected via the fade processor, is present at both SD1 and SD2. Both I2S and EIAJ formats are supported. Table 5 SD1/SD2 output decoding formats. Note 1. The sub-band filter performs rounding to 16 or 18 bits according to the operating mode of the interface. SERIAL AUDIO INTERFACE MODE CONTROL The operating mode of the interface is programmed by the extended settings registers as shown in Table 6. SD1 INPUT SD2 OUTPUT FORMAT MASTER/SLAVE RESOLUTION FORMAT RESOLUTION I2S master 18 bit I2S 18 bit I2S slave 18 bit I2S 18 bit I2S master 16 bit I2S 18 bit I2S slave 16 bit I2S 16 bit EIAJ(1) master 18 bit I2S 18 bit EIAJ(1) slave 18 bit I2S 18 bit EIAJ(1) master 16 bit I2S 18 bit EIAJ(1) slave 16 bit I2S 18 bit FORMAT MASTER/SLAVE RESOLUTION(1) I2S master 18 bit I2S slave 18 bit I2S master 16 bit I2S slave 16 bit EIAJ master 18 bit EIAJ master 16 bit |
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