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UDA1320 Datasheet(PDF) 5 Page - NXP Semiconductors |
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UDA1320 Datasheet(HTML) 5 Page - NXP Semiconductors |
5 / 20 page 2000 Jan 10 5 Philips Semiconductors Preliminary specification Low-cost stereo filter DAC UDA1320ATS 7 PINNING 8 FUNCTIONAL DESCRIPTION 8.1 System clock The UDA1320ATS/N2 operates in slave mode only. This means in all applications the system devices must provide the system clock. The system frequency is selectable and depends on the mode of operation. The options are 256fs, 384fs and 512fs for the L3 mode and 256fs plus 384fs for the static mode. The system clock must be locked in frequency to the digital interface input signals. The UDA1320ATS/N2 supports sampling frequencies from 16kHz up to 48kHz 8.2 Application modes The application mode can be set with the tri-value APPSEL pin, to L3 mode (APPSEL = VSSD) or to either of two static modes (APPSEL = 0.5VDDD or APPSEL = VDDD). See Table 1 for APPL0 to APPL3 pin functions (active = HIGH). Table 1 Selection modes via APPSEL (note 1) For example, in static pin control mode, the output signal can be soft muted by setting APPL0 HIGH. De-emphasis can be switched on for 44.1 kHz by setting APPL1 HIGH. APPL1 LOW will disable de-emphasis. Note that when L3 interface is used, an L3 initialisation must be done when the IC is powered up! In L3 mode pin APPL0 must be set to LOW. SYMBOL PIN DESCRIPTION BCK 1 bit clock WS 2 word select DATAI 3 data input VDDD 4 digital power supply VSSD 5 digital ground SYSCLK 6 system clock: 256fs, 384fs, 512fs APPSEL 7 application mode select APPL3 8 application pin 3 APPL2 9 application pin 2 APPL1 10 application pin 1 APPL0 11 application pin 0 VREF(DAC) 12 DAC reference voltage VDDA 13 analog supply voltage VO(L) 14 left output voltage VSSA 15 analog ground VO(R) 16 right output voltage Fig.2 Pin configuration. handbook, halfpage UDA1320A MGM817 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VO(R) BCK VSSA WS VO(L) DATAI VDDA VDDD VREF(DAC) VSSD APPL0 SYSCLK APPL1 APPSEL APPL2 APPL3 PIN APPSEL VSSD 0.5VDDD (384fs) VDDD (256fs) APPL0 TEST MUTE MUTE APPL1 L3CLOCK DEEM DEEM APPL2 L3MODE SF0 SF0 APPL3 L3DATA SF1 SF1 |
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Similar Description - UDA1320 |
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