參數(shù)資料
型號(hào)： AK4120
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： Sample Rate Converter with Mixer and Volume
中文描述： 采樣率轉(zhuǎn)換器與調(diào)音臺(tái)和卷
文件頁(yè)數(shù)： 13/30頁(yè)
文件大小： 259K
代理商： AK4120
ASAHI KASEI
[AK4120]
MS0134-E-00
2002/1
- 13 -
OPERATION OVERVIEW
n
I/O Data flow
The AK4120 has two input audio data interfaces (Input#1 and Input#2). The AK4120 has four modes of operation, each
corresponding to a different internal audio path as shown in Table 1. These path modes are selected by the PATH1-0
bits.
Path Mode
PATH1-0 bits
0
(see Figure 3)
data paths through Volume#1 and Input#2 data is paths through Volume#2.
These data are mixed and this mixed data is output. The sample rata of
Input#1 is defined by IMCLK1 and the sample rate of Output data is
defined by OMCLK. The sample rate of Input#2 should be same as Output
data.
1
(see Figure 4)
data volume is controlled by Volume#1 and this data is output. The sample
rata of Input#2 is defined by IMCLK2 and the sample rate of Output data is
defined by OMCLK.
2
(see Figure 5)
synchronous with IMCLK.
3
(see Figure 6)
synchronous with OMCLK.
Table 1. Path Mode
Note: When Path Mode is changed, the AK4120 should be powered down using the “PW” bit
Output Data
“00”
The sample rate of Input#1 data is converted by SRC block. This converted
“01”
The sample rate of Input#2 data is converted by SRC block. This converted
“10”
Input#1 data paths through Volume#2 and is output. Output data should
“11”
Input#2 data paths through Volume#2 and is output. Input#2 should
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