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WM8740 Datasheet(PDF) 5 Page - Wolfson Microelectronics plc |
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WM8740 Datasheet(HTML) 5 Page - Wolfson Microelectronics plc |
5 / 24 page WM8740 Production Data w PD Rev 4.0 April 2004 5 PIN NAME TYPE DESCRIPTION Hardware Mode Normal Mode Differential Mode 8X Mode Software Mode 23 CSBIWO Digital input Internal pull-down Wordlength: Low for 16-bit data. High for 20-bit (normal) or 24-bit I 2S data. Wordlength: Low for 16-bit data. High for 20-bit (normal) or 24-bit I 2S data. Wordlength: Low for 20-bit data. High for 24-bit data. Low for serial interface operation. 24 MODE Digital input Internal pull-up Low for hardware mode. Low for left mono mode. High for right mono mode DINR High for software mode. 25 MUTEB Digital input Internal pull-up Low to soft mute. High for normal operation. Low to soft mute. High for normal operation. Low to soft mute. High for normal operation. Low to soft mute. High for normal operation. 26 MD/DM0 Digital input Internal pull-up De-emphasis mode select bit 0. Low for no de-emphasis. High for 44.1kHz de-emphasis. LRP – LRCLK polarity select. Control serial interface data signal. 27 MC/DM1 Digital input Internal pull-up De-emphasis mode select bit 1. Low for normal filter operation. High for filter slow roll-off. Unused. Leave unconnected. Control serial interface clock signal. 28 ML/I2S Digital input Internal pull-up Audio serial format: Low – right justified. High – I 2S. Audio serial format: Low – right justified. High – I 2S. Input data format: Low – right justified. High – left justified. Control serial interface load signal. Note: Digital input pins have Schmitt trigger input buffers. ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical Characteristics at the test conditions specified ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage of this device. Wolfson tests its package types according to IPC/JEDEC J-STD-020B for Moisture Sensitivity to determine acceptable storage conditions prior to surface mount assembly. These levels are: MSL1 = unlimited floor life at <30 °C / 85% Relative Humidity. Not normally stored in moisture barrier bag. MSL2 = out of bag storage for 1 year at <30 °C / 60% Relative Humidity. Supplied in moisture barrier bag. MSL3 = out of bag storage for 168 hours at <30 °C / 60% Relative Humidity. Supplied in moisture barrier bag. CONDITION MIN MAX Supply voltage -0.3V +7.0V Input GND -0.3V VDD + 0.3V Operating temperature range, TA -25°C +85°C Storage temperature prior to soldering 30 °C max / 85% RH max Storage temperature after soldering -65 °C +150 °C Note: It is strongly recommended that AVDD, AVDDL and AVDDR are tied together. AGND, AGNDL and AGND right must also be tied together. |
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