參數(shù)資料
型號: UPC1892
廠商: NEC Corp.
英文描述: MATRIX SURROUND SOUND PROCESSOR WITH SOUND PROCESSOR
中文描述: 矩陣環(huán)繞聲處理器,音頻處理器
文件頁數(shù): 6/42頁
文件大?。?/td> 299K
代理商: UPC1892
μ
PC1892
6
Explanation of Pins (1/4)
1 k
50 k
50 k
7
2
V
CC
V
CC
V
CC
10 k
18 k
3 k
5 A
21 k
21 k
6
+
25 A
1 F
V
CC
V
CC
10 k
50 k
3 k
Pin number/name
1 Power supply
Equivalent circuit
Description
V
CC
Power supply pin.
2 Phase shift filter1
3 Phase shift filter2
4 Phase shift filter3
5 Phase shift filter4
(Pins 3, 4 and 5 are same as pin 2.)
Capacitor connection pin which determines time
constant of phase shifter.
Pin 2 is used for movie, music, simulated mode.
Pins 2, 3, 4, 5 is used for movie, simulated mode.
Recommended value of capacitor is as follows.
Pin 2: 0.1
μ
F
Pin 3: 2200 pF
Pin 4, 5: 0.022
μ
F
6 Offset filter
Capacitor connection pin which absorbs offset
voltage generated by phase shifter.
7 Mode select1
8 Mode select2
(Pin 8 is same as pin 7.)
Surround mode switch pin.
Control by pin 7, 8 (2 bit parallel).
Input impedance:approx. 100 k
.
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