LSI Logic Confidential
6-9
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
Audio I/O Interface
Audio port signals are 3.3 V LVTTL compatible and 5 V tolerant. All outputs are specified with a 25 pF
load and 10 mA drive.
AI_SCLK
B12
I/O
Serial audio bit clock used for audio input. Input data
and AI_FSYNC as an input are sampled on the
rising edge if Iclkr is set; otherwise they are sampled
on the falling edge. AI_FSYNC, as an output, is
driven on the falling edge if Iclkr is set, otherwise it
is driven on the rising edge. AI_SCLK is
asynchronous to all other chip clocks. This clock can
be driven from outside or it can be internally
generated and driven out.
AO_SCLK
A14
O
Serial audio bit clock for audio output. Output data
and AO_FSYNC are driven on the falling edge if
Oclkr is set; otherwise they are driven on the rising
edge. AO_SCLK is asynchronous to all other chip
clocks. This clock is internally generated and driven
out.
AI_MCLKO
A13
O
Audio master input clock output for the internally
generated master input clock.
AO_MCLKO
B13
O
Audio Master Output Clock output for the internally
generated master output clock.
AI_D[1:0]
D12, C13
I
Audio Stream Input Data. Up to four channels of
serial audio data are clocked in from the AI_D pin.
With two samples/frame, channel 2n and 2n + 1 use
pin AI_D[n]. With one sample/frame, channel n uses
pin AI_D[n].
AO_D[3:0]
A15, B15, C14,
D14
O
Audio Stream Output Data. Up to eight channels of
serial audio data are clocked out from the four
AO_D pins by the clock on the AO_SCLK pin. With
two samples/frame, channel 2n and 2n + 1 use pin
AO_D[n]. With one sample/frame, channel n uses
pin AO_D[n].
AI_FSYNC
C12
I/O
AI_FSYNC determines the start or end of the next
input sample or frame as specified by frForm in the
audio input control register. AI_FSYNC can be
internally or externally generated.
Table 6.1
DMN-8600 Pin Descriptions (Cont.)
Name
Pin No.
Type
1
Description
Содержание DMN-8600
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