參數(shù)資料
型號: AK4397
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: High Performance Premium 32-Bit DAC
中文描述: 優(yōu)質(zhì)高性能32位DAC
文件頁數(shù): 17/37頁
文件大小: 513K
代理商: AK4397
[AK4397]
MS0616-E-00
2007/05
- 17 -
2. Auto Setting Mode (ACKS pin = “H”)
MCLK frequency and the sampling speed are detected automatically (Table 4) and DFS0 pin is ignored. DFS0 pin should
be fixed to VSS4 or DVDD.
MCLK
1152fs
512fs
768fs
256fs
384fs
128fs
192fs
Table 4. Sampling Speed (Auto Setting Mode @Parallel Mode)
LRCK
MCLK (MHz)
fs
128fs
192fs
256fs
384fs
32.0kHz
N/A
N/A
N/A
N/A
44.1kHz
N/A
N/A
N/A
N/A
48.0kHz
N/A
N/A
N/A
N/A
88.2kHz
N/A
N/A
22.5792
33.8688
96.0kHz
N/A
N/A
24.5760
36.8640
176.4kHz
22.5792
33.8688
N/A
N/A
192.0kHz
24.5760
36.8640
N/A
N/A
Table 5. System Clock Example (Auto Setting Mode @Parallel Mode)
(2) Serial Mode (P/S pin = “L”)
1. Manual Setting Mode (ACKS bit = “0”)
MCLK frequency is detected automatically and the sampling speed is set by DFS1-0 bits (Table 6). The MCLK frequency
corresponding to each sampling speed should be provided (Table 7). The AK4397 is set to Manual Setting Mode at
power-up (PDN pin = “L”
“H”). When DFS1-0 bits are changed, the AK4397 should be reset by RSTN bit.
DFS1 bit
DFS0 bit
Sampling Rate (fs)
0
0
Normal Speed Mode
0
1
Double Speed Mode
1
0
Quad Speed Mode
Table 6. Sampling Speed (Manual Setting Mode @Serial Mode)
LRCK
MCLK (MHz)
fs
128fs
192fs
256fs
384fs
32.0kHz
N/A
N/A
8.1920
12.2880
44.1kHz
N/A
N/A
11.2896
16.9344
48.0kHz
N/A
N/A
12.2880
18.4320
88.2kHz
11.2896
16.9344
22.5792
33.8688
96.0kHz
12.2880
18.4320
24.5760
36.8640
176.4kHz
22.5792
33.8688
N/A
N/A
192.0kHz
24.5760
36.8640
N/A
N/A
Table 7. System Clock Example (Manual Setting Mode @Serial Mode)
Sampling Speed
Normal (fs
32kHz)
Normal
Double
Quad
512fs
16.3840
22.5792
24.5760
N/A
N/A
N/A
N/A
768fs
24.5760
33.8688
36.8640
N/A
N/A
N/A
N/A
1152fs
36.8640
N/A
N/A
N/A
N/A
N/A
N/A
Sampling
Speed
Normal
Double
Quad
30kHz
54kHz
54kHz
108kHz
120kHz
216kHz
(default)
BICK
64fs
2.0480MHz
2.8224MHz
3.0720MHz
5.6448MHz
6.1440MHz
11.2896MHz
12.2880MHz
512fs
16.3840
22.5792
24.5760
N/A
N/A
N/A
N/A
768fs
24.5760
33.8688
36.8640
N/A
N/A
N/A
N/A
1152fs
36.8640
N/A
N/A
N/A
N/A
N/A
N/A
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