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PDF NJW1154 Data sheet ( Hoja de datos )
| Número de pieza | NJW1154 | |
| Descripción | 2-CHANNEL ELECTRONIC VOLUME WITH INPUT SELECTOR | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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NJW1154
2-CHANNEL ELECTRONIC VOLUME WITH INPUT SELECTOR
s GENERAL DESCRIPTION
NJW1154 is a two channel electronic volume with
6 in 1 out selector IC. It’s suitable for Input signal
trimmer of audio equipments such as DVD recorder
and VCR. These functions are controlled by I2C Bus.
s PACKAGE OUTLINE
s FEATURES
q Operating Voltage
q I2C Bus control
q 6in 1out Input Selector
q Volume
q Bi-CMOS Technology
q Package Outline
s BLOCK DIAGRAM
8 to 13V
NJW1154V
+12 to -12dB/3dBstep, MUTE
SSOP32
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
Vref Vref
GND
I2C Bus
Interface
Vref
Internal
Power Supply
ALC
Control
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
–1–
1 page  
NJW1154
s DEFINITION OF I2C REGISTER
♦I2C BUS FORMAT
MSB
LSB
S Slave Address A
MSB
LSB
Select Address
MSB
A
1bit 8bit
1bit 8bit 1bit
S: Starting Term
A: Acknowledge Bit
P: Ending Term
Data
8bit
LSB
A
1bit
P
1bit
♦SLAVE ADDRESS
MSB
1000001
R/W=0: Receive Only
R/W=1: No Output Data
♦CONTROL REGISTER TABLE
The select address sets each function (Volume, Selector).
The auto increment function cycles the select address as follows.
00H¡01H¡02H¡00H
Select
Address
00H
01H
02H
D7
D6 D5
Don’t Care
Don’t Care
Don’t Care
BIT
D4 D3
LSB
R/W
D2 D1
VOLa
VOLb
Selector
D0
♦CONTROL REGISTER DEFAULT VALUE
Control register default values are as follows :
Select
BIT
Address
D7
D6
D5
D4
D3
D2
D1
D0
00H 1 1 1 1 1 1 1 1
01H 1 1 1 1 1 1 1 1
02H 0 0 0 0 0 0 0 0
–5–
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet NJW1154.PDF ] | |
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