- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378697 > SM5844AF (Seiko NPC Corporation) Asynchronous Sample Rate Converter PDF資料下載
參數(shù)資料
| 型號： | SM5844AF |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | Asynchronous Sample Rate Converter |
| 中文描述： | 異步采樣率轉(zhuǎn)換器 |
| 文件頁數(shù)： | 15/26頁 |
| 文件大?。?/td> | 280K |
| 代理商： | SM5844AF |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁
SM5844AF
NIPPON PRECISION CIRCUITS—15
Attenuation (MDT, MCK, MLEN)
The digital attenuator coefficients are read in as
serial data on the microcontroller interface. Data on
MDT is read into the internal shift register on the
rising edge of MCK, and then 12 bits are latched
internally on the rising edge of MLEN.
When the leading bit is 0 (B1 = LOW), the following
11 bits are read into the attenuation register and used
as an unsigned integer in MSB first format. See
figure 3.
Although the attenuation data comprises 11 bits,
only 1025 levels are valid as given by the following.
The gain of the attenuator for values of DATT from
001H to 400H are given by the following equations.
Note that when the F12DB flag is HIGH, the gain is
shifted by +12.0412 dB.
After a system reset initialization, DATT is set to
400H and the F12DB flag is LOW, corresponding to
0 dB gain. (The F12DB flag is described in table 2.)
Figure 3. Attenuation data format (microcontroller interface)
MCK
MDT
MLEN
MCK and MLEN can also follow the dotted lines.
LOW
B1
a0
B2
a1
B3
a2
B4
a6
B8
a7
B9
a8
B10
MSB
a9
B11
a10
B12
LSB
DATT
a
i
2
10
i
–
(
)
×
i
0
=
10
∑
=
Gain
20
1024
DATT
log
×
[dB]
=
20
256
DATT
log
×
[dB]
=
when F12DB = LOW
when F12DB = HIGH
Table 5. Attenuator settings
Attenuation data DATT
F12DB = LOW (default)
F12DB = HIGH
Gain (dB)
Linear expression
Gain (dB)
Linear expression
000H
∞
0.0
∞
0.0
001H
60.206
1/1024
48.165
1/256
↓
↓
↓
↓
↓
100H
12.041
256/1024
0.0
256/256
↓
↓
↓
↓
↓
3FFH
0.0085
1023/1024
12.032
1023/256
400H (to 7FFH)
0
1.0
12.041
4.0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SM5847 | High-fidelity Digital Audio, Multi-function Digital Filter |
| SM5847AF | High-fidelity Digital Audio, Multi-function Digital Filter |
| SM5859AF | compression and non compression type antishock memory controller |
| SM5864AP | Digital Audio D/A Converter |
| SM5865AM | D/A Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SM5846AP | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Multi-function Digital Filter |
| SM5846AP_06 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Multi-function Digital Filter |
| SM5847 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:High-fidelity Digital Audio, Multi-function Digital Filter |
| SM5847AF | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:High-fidelity Digital Audio, Multi-function Digital Filter |
| SM5849 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Asynchronous Sample Rate Converter |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。