LSI Logic Confidential
12-4
Audio Interface
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
programmed at least one frame time before setting the
GoI bit.
IBclk
[24:22]
Specifies the divisor ratio of the internally generated
audio input bit clock from the audio input master clock, as
shown below. When using an externally generated audio
input bit clock, this field is ignored.
An IBclk value of one and ITim clear or a Bclk of zero and
ITim set corresponds to a 256xFs master clock. An IBclk
of zero and ITim clear corresponds to a 128xFs master
clock (as used with ADCs which perform clock doubling
for > 48Khz sample rates). An IBclk value of two and ITim
clear corresponds to a 384xFs master clock.
Programming note: This field should be programmed at
least one frame time before setting the GoI bit.
Stop
21
Setting this bit halts audio input and output processing for
diagnostic purposes. All queue entries from both input
and both output streams are flushed.
Iclkr Value
Driving Edge
Sampling Edge
0
Rising
Falling
1
Falling
Rising
Value
Audio Input Master Clocks/
Internal Audio Input Bit Clock
0
2
1
4
2
6
3
8
4
12
5
16
Содержание DMN-8600
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