W90P710_05 Datasheet, PDF (297/526 Pages) Winbond – 16/32-bit ARM microcontroller

W90P710
LRCLK
BCK
L eft
123
R ight
12
DATA
M SB B2
LRCLK
BCK
L eft
123
I2S bus
LSB M SB
R ight
12
DATA
M SB B2
B3
LSB M SB B2
M S B –Ju stified form at
Figure 7.11.2.2 The format of IIS
The sampling rate, bit shift clock frequency could be set by the control register ACTL_IISCON.
7.11.2 AC97 Interface
The AC97 interface, called AC-link is supported. For input and output direction, each frame contains a
Tag slot and 12 data slots. However, in the 12 data slots, only 4 slots are used in W90P710, other 8
slots are not supported, and the control data and audio data are transferred in the 4 valid slots. Each
slot contains 20 bits data.
The interface signals are shown as Figure 7.11.2.1
Audio
Controller
SYNC
BCLK
DIN
DOUT
RESETB
Audio
Codec
Figure 7.11.2.1 The interface signal of AC-link
The signal format is shown as Figure 7.11.2.2
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Publication Release Date: January 17, 2005
Revision A.2