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參數(shù)資料
| 型號(hào)： | LC78856V |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Built-in Digital Filter D/A Converters for Digital Audio |
| 中文描述： | 內(nèi)置的數(shù)字濾波器?- /數(shù)字音頻轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大?。?/td> | 177K |
| 代理商： | LC78856V |
No. 5128-5/8
LC78856M, 78856V
Pin Functions
SSOP
MFP
Symbol
Function
1
1
RSTB
Reset input (A low-level input resets the LSI internal circuits.)
2
2
CNT1
Emphasis on/off switching input
3
3
CNT2
Standard speed/double speed switching input
4
4
CNT3
Soft mute input
5
5
BCLK
Bit clock input
6
6
LRCK
LR clock input
7
7
DATA
Digital audio data input
10
8
MODE
Input format setting
11
9
CKO
Clock output
12
10
XV
DD
XIN
Oscillator amplifier power supply
13
11
Oscillator amplifier input
14
12
XOUT
Oscillator amplifier output
15
13
XGND
Oscillator amplifier ground
16
14
DGND
Digital system ground
17
15
MRO
Right channel mute signal output
18
16
TEST
Test pin (Must be tied low in normal operation.)
19
17
AV
DD
4
OUTRA
Analog system power supply
20
18
Right channel output A
21
19
AGND2
Analog system ground
22
20
OUTRB
Right channel output B
23
21
AV
DD
3
AV
DD
2
OUTLB
Analog system power supply
24
22
Analog system power supply
25
23
Left channel output B
26
24
AGND1
Analog system ground
27
25
OUTLA
Left channel output A
28
26
AV
DD
1
MLO
Analog system power supply
29
27
Left channel mute signal output
30
28
DV
DD
Digital system power supply
Operating Description
The LC78856M and LC78856V internal circuits can be roughly divided into the digital filter block and the 1-bit D/A
converter block.
[Digital Filter Block]
1. Standard Speed
The LC78856M and LC78856V implements 8
×
oversampling using three FIR filters: a 43rd-order filter, an 11th-
order filter, and a 3rd-order filter. A 1st-order IIR filter is used for de-emphasis.
2. Double Speed
Double-speed playback is used, for example, for dubbing CDs to audio tape at double speed. Here, the same
frequency is used for XIN, but BCLK, LRCK and DATA are input at twice the rates used in standard-speed
playback. After de-emphasis is applied with a 1st-order IIR filter, the signal is 4
×
oversampled using a 43rd-order
FIR filter and a 3rd-order FIR filter.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LC78857V | Digital Audio D/A Converter IC with On-Chip Digital Filters |
| LC78865 | 16-bit A/D Converter |
| LC78865M | 16-bit A/D Converter |
| LC78866V | 16-bit A/D Converter |
| LC7886 | 18-Bit A/D Converter for Digital Audio Applications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC78857V | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Digital Audio D/A Converter IC with On-Chip Digital Filters |
| LC78858V | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LC7886 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:18-Bit A/D Converter for Digital Audio Applications |
| LC78865 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:16-bit A/D Converter |
| LC78865M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:16-bit A/D Converter |
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