About i2s BIT_CLK and SYNCD of NanoBen
kzjeef at gmail.com
Sun Sep 13 06:45:04 EDT 2009
I 'm checking the initializing instruction of jz4740 sound driver of
NanoBen, I found I2S register AICFR.BCKD(jz4740 program manual 13.2.1) and
AICFR.SYNCD are set to 0 in jz4740 i2s driver.
these two bit's function are:
BCKD : BIT_CLK Direction. This bit specifies input/output direction of
0 = BIT_CLK is input from an external source.
1 = BIT_CLK is generated internally and driven out to the CODEC.
SYNCD: SYNC Direction. This bit specifies input/output direction of SYNC in
0 = SYNC is input from an external source.
1 = SYNC is generated internally and driven out to the CODEC.
My question is :
what direction the BIT_CLK and SYNC of ben was ? I just want to ensure the
is that right.
Since I have no *oscillograph*, so I cann't sure the CODEC and I2S works
fine or not, so I just check the init instruction of programming manual.
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