eKA8564A
USB Audio Controller
11 I2S Interface Signal
LRCLK
0
BCLK
Left Channel
31 0
Right Channel
31
SDATA
MSB -1 -2 -3
+3 +2 +1 LSB
MSB -1 -2 -3
+3 +2 +1 LSB
Fig 11-1 I2S Justified Audio Stream Format
LRCLK
0
BCLK
Left Channel
31 0
Right Channel
31
SDATA
MSB -1 -2 -3
+3 +2 +1 LSB
MSB -1 -2 -3
+3 +2 +1 LSB
Fig 11-2 Left Justified Audio Stream Format
LRCLK
Left Channel
Right Channel
0
31 0
31
BCLK
SDATA
MSB -1 -2 -3
+3 +2 +1 LSB
MSB -1 -2 -3
+3 +2 +1 LSB
Fig 11-3 Right Justified Audio Stream Format
The LRCLK and BCLK are derived from MCLK. The frequency ratio
MCLK : LRCLK:BCLK = 256: 1 : 64.
The frequency of LRCLK equals the sampling rate 48kHz, 44.1kHz, 32kHz or 8kHz
based on FS_SEL0 and FS_SEL1 pins status.
10 •
Product Specification (V0.1) 09.08.2006
(This specification is subject to change without further notice)