Cirrus Logic, Inc. S/PDIF Digital Interface Transceiver WM8804


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S/PDIF Digital Interface Transceiver - WM8804 - Cirrus Logic, Inc.
Austin, TX, USA
S/PDIF Digital Interface Transceiver WM8804
The WM8804 is a high performance consumer mode S/PDIF transceiver with support for 1 received channel and 1 transmitted channel. A crystal derived, or externally provided high quality master clock is used to allow low jitter recovery of S/PDIF supplied master clocks. Generation of all typically used audio clocks is possible using the high performance internal PLL. A dedicated CLKOUT pin provides a high drive clock output. A pass through option is provided which allows the device simply to be used to clean up (de-jitter) the received digital audio signals. The device may be used under software control or stand alone hardware control modes. In software control mode, both two-wire with read back and three-wire interface modes are supported. Status and error monitoring is built-in and results can be read back over the control interface, on the GPO pins or streamed over the audio data interface in ‘With Flags’ mode (audio data with status flags appended). The audio data interface supports I²S, left justified, right justified and DSP audio formats of 16-24 bit word length, with sample rates from 32 to 192ks/s. The device is supplied in a 20-lead Pb-free SSOP package. Features S/PDIF (IEC60958-3) compliant Advanced jitter attenuating PLL with low intrinsic period jitter of 50 ps RMS S/PDIF recovered clock using PLL, or stand alone crystal derived clock generation Supports 10 – 27MHz crystal clock frequencies Two-wire / three-wire serial or hardware control interface Programmable audio data interface modes: I²S, Left, Right Justified or DSP 16/20/24 bit word lengths 1 channel receiver input and 1 channel transmit output Auto frequency detection / synchronisation Selectable output status data bits Up to 3 configurable GPO pins De-emphasis flag output Non-audio detection including DOLBYTM and DTSTM Channel status changed flag Configurable clock distribution with selectable output MCLK rate of 512fs, 256fs, 128fs and 64fs 2.7 to 3.6V digital and PLL supply voltages 20-lead SSOP package
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Technical Specifications

  Cirrus Logic, Inc.
Product Category Audio Processor ICs
Product Number WM8804
Product Name S/PDIF Digital Interface Transceiver
Operating Frequency 10 to 27 MHz
Input Signal Digital
Output Signal Digital
Package/Case 20 SSOP
Supply Voltage 2.7 to 3.6 volts
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