WM8903LGEFK/RV Wolfson Microelectronics, WM8903LGEFK/RV Datasheet - Page 87

• Manufacturer Part Number: WM8903LGEFK/RV
• Description: Audio CODECs ULTRA LOW PWR HI FI CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8903LGEFK/RV

• Audio Codec Type: Stereo Codec
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 6
• No. Of Output Channels: 8
• Adc / Dac Resolution: 24bit
• Sampling Rate: 96kHz
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Adcs / Dacs Signal To Noise Ratio: 96dB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
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Figure 43 I2S Justified Audio Interface (assuming n-bit word length)
In DSP mode, the left channel MSB is available on either the 1
edge of BCLK (selectable by AIF_LRCLK_INV) following a rising edge of LRC. Right channel data
immediately follows left channel data. Depending on word length, BCLK frequency and sample rate,
there may be unused BCLK cycles between the LSB of the right channel data and the next sample.
In device master mode, the LRC output will resemble the frame pulse shown in Figure 44 and Figure
45. In device slave mode, Figure 46 and Figure 47, it is possible to use any length of frame pulse
less than 1/fs, providing the falling edge of the frame pulse occurs greater than one BCLK period
before the rising edge of the next frame pulse.
Figure 44 DSP Mode Audio Interface (mode A, AIF_LRCLK_INV=0, Master)
Figure 45 DSP Mode Audio Interface (mode B, AIF_LRCLK_INV=1, Master)
DACDAT/
ADCDAT
BCLK
LRC
MSB
1 BCLK
1
2
3
LEFT CHANNEL
Input Word Length (WL)
n-2
n-1
LSB
n
1/fs
1 BCLK
1
2
3
st
RIGHT CHANNEL
(mode B) or 2
PD, Rev 4.0, September 2010
n-2
n-1
nd
n
(mode A) rising
WM8903
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