wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 101

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

w
Pre-Production
ALTERNATIVE DAC INTERFACE
The WM8400 may be configured to select between two different audio interfaces, providing the
capability to receive DAC input data via BCLK2, DACLRC2 and DACDAT2 instead of BCLK,
DACLRC and DACDAT. This selection is made by register bit AIF_SEL, as described in Table 62.
To use the alternative DAC interface, the following register settings are required:
Note that additional devices can also be connected to the main interface pins using the TDM mode.
See "Digital Audio Interface" section for further details on controlling the audio interface pins.
The alternative DAC interface connection is illustrated in Figure 45.
Figure 45 Alternative DAC Interface
•
•
•
•
AIF_TRIS = 0
AIF_SEL = 1
GPIO3_PU = 0, GPIO4_PU = 0, GPIO5_PU = 0
GPIO3_PD = 0, GPIO4_PD = 0, GPIO5_PD = 0
PP, April 2009, Rev 3.0
WM8400
101