WM8776SEFT/V Wolfson Microelectronics, WM8776SEFT/V Datasheet - Page 19

• Manufacturer Part Number: WM8776SEFT/V
• Description: Audio CODECs Stereo CODEC with 5-Ch Mux
• Manufacturer: Wolfson Microelectronics

Specifications of WM8776SEFT/V

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-48
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
DIGITAL AUDIO INTERFACE
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MASTER AND SLAVE MODES
The audio interface operates in either Slave or Master mode, selectable using the MS control bit. In
both Master and Slave modes DIN is always an input to the WM8776 and DOUT is always an output.
The default is Slave mode.
In Slave mode (MS=0) ADCLRC, DACLRC, ADCBCLK and DACBCLK are inputs to the WM8776
(Figure 11). DIN and DACLRC are sampled by the WM8776 on the rising edge of DACBCLK,
ADCLRC is sampled on the rising edge of ADCBCLK. ADC data is output on DOUT and changes on
the falling edge of ADCBCLK. By setting control bit BCLKINV the polarity of ADCBCLK and
DACBCLK may be reversed so that DIN and DACLRC are sampled on the falling edge of DACBCLK,
ADCLRC is sampled on the falling edge of ADCBCLK and DOUT changes on the rising edge of
ADCBCLK.
Figure 11 Slave Mode
In Master mode (MS=1) ADCLRC, DACLRC, ADCBCLK and DACBCLK are outputs from the
WM8776 (Figure 12). ADCLRC, DACLRC, ADCBCLK and DACBCLK are generated by the WM8776.
DIN is sampled by the WM8776 on the rising edge of DACBCLK so the controller must output DAC
data that changes on the falling edge of DACBCLK. ADC data is output on DOUT and changes on
the falling edge of ADCBCLK. By setting control bit BCLKINV, the polarity of ADCBCLK and
DACBCLK may be reversed so that DIN is sampled on the falling edge of DACBCLK and DOUT
changes on the rising edge of ADCBCLK.
Figure 12 Master Mode
WM8776
WM8776
CODEC
CODEC
DACBCLK
ADCBCLK
DACBCLK
ADCBCLK
ADCLRC
ADCLRC
DACLRC
DACLRC
DOUT
DOUT
DIN
DIN
Controller
Controller
DVD
DVD
PD, Rev 4.1, September 2008
WM8776
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