参数资料
型号: EVAL-ADAU1446EBZ
厂商: Analog Devices Inc
文件页数: 42/92页
文件大小: 0K
描述: BOARD EVAL FOR ADAU1446
标准包装: 1
系列: SigmaDSP®
主要目的: 音频,音频处理
嵌入式: 是,DSP
已用 IC / 零件: ADAU1446
主要属性: 单芯片多通道 28/56 位音频 DSP
次要属性: I²C & SPI 接口
已供物品: 板,软件
ADAU1445/ADAU1446
Rev. A | Page 47 of 92
RATE
8
STEREO
ASRCs
(8 × 2 CH)
0, 1
2, 3
4, 5
6, 7
8, 9
10, 11
12, 13
14, 15
0, 1
2, 3
4, 5
6, 7
8, 9
10, 11
12, 13
14, 15
TO DSP
TO FARM
(OUTPUT SIDE)
0, 1
2, 3
4, 5
6, 7
8, 9
10, 11
12, 13
14, 15
16, 17
18, 19
20, 21
22, 23
FROM DSP
FROM SERIAL
INPUT PORTS
FROM
S/PDIF Rx
0
76
96
-0
43
FARM
Stereo ASRC Routing Overview
Within the ADAU1445, signals are required to be synchronous
to the master clock only when they are within the DSP core itself.
At all other times, signals can be asynchronous to one another and
the core. This is illustrated in Figure 42. Because the ADAU1446
has no ASRCs, all audio signals must be synchronous at all times.
The stereo ASRCs allow asynchronous signals to be converted
for processing in the DSP.
The input to an ASRC can come from one of 21 sources: the
12 input channel pairs, the S/PDIF Rx pair, or the eight DSP-to-
ASRC pairs. This allows the ASRCs to be placed both before
and after the DSP. Figure 43 and Figure 44 show examples of
how the ASRCs can be used both before and after the DSP.
Figure 41. Stereo ASRC Routing
SYNCHRONOUS
ASYNCHRONOUS
07
69
6-
0
42
Figure 42. Synchronous and Asynchronous Zones of the ADAU1445
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