參數(shù)資料
型號(hào): UPC1857ACT
廠商: NEC Corp.
英文描述: SOUND CONTROL IC WITH SURROUND AND I2C BUS
中文描述: 聲控集成電路環(huán)繞和I2C總線
文件頁(yè)數(shù): 20/44頁(yè)
文件大?。?/td> 343K
代理商: UPC1857ACT
20
μ
PC1857A
4.2
Initialization
After power application, be sure to initialize the subaddresses as shown below.
Table 4-1. Initialization of
μ
PC1857A (recommendation value)
Bit
Subaddress
MSB
D7
D6
D5
D4
D3
D2
D1
LSB
D0
00H
0
0
0
0
1
1
0
0
01H
0
02H
0
1
0
0
0
0
0
03H
0
0
1
0
0
0
0
04H
0
0
1
0
0
0
0
Caution Until initialization is completed, mute using an external unit.
Remark
: Don’t care.
4.3
Surround Function
For how to set the surround mode, refer to the table below.
Table 4-2. Setting Surround Mode
Setting
Subaddress: 00H
Description
Surround Mode
D3
D2
Units of Phase Shifter
Effect
Simulated
0
0
4 units
Monaural to pseudo-stereo
Music
0
1
1 unit
Stereo sound to surround
Movie
1
0
4 units
OFF
1
1
Through
Caution When changing the surround mode, use the mute function (approx. 200 ms) for pop noise
reduction.
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