njw1109 New Japan Radio Co.,Ltd, njw1109 Datasheet - Page 12

• Manufacturer Part Number: njw1109
• Description: Headphone Amplifier With Electronic Volume
• Manufacturer: New Japan Radio Co.,Ltd

NJW1109
!CONTROL REGISTER DEFAULT VALUE
!CONTROL COMMAND TABLE
a) Master Volume
b) Balance
– 12 –
DEFINITION OF I
Select
Address
Select
Address
Select
Address
Attenuation level : +20 to –80dB(0.5dB/step), MUTE
I
SLAVE ADDRESS
SELECT ADDRESS
2
CHS : Balance channel select
BAL : Ach and Bch Ach and Bch Balance
VOL : Master Volume
Address
MSB
C BUS FORMAT
The auto-increment function cycles the select address as follows.
“0” : Ach “Bch is attenuated”
Select
1bit
S: Starting Term
A: Acknowledge Bit
P: Ending Term
00H→01H→00H
Balance Level : 0 to –30dB (1dB/Step) , MUTE
S
00H
01H
00H
01H
00H
01H
Control register default value is all “0”.
1
1
MSB
Slave Address
CHS
CHS
0
0
D7
D7
D7
D7
0
0
8bit
2
C REGISTER
0
0
D6
D6
D6
D6
0
0
LSB
1bit
A
MSB
“1” : Bch “Ach is attenuated”
0
0
D5
D5
D5
D5
0
0
Select Address
0
0
8bit
BAL
BAL
D4
D4
D4
D4
0
0
0
1
VOL
VOL
LSB MSB
1bit
A
D3
D3
D3
D3
0
0
0
0
BIT
BIT
BIT
BIT
D2
D2
D2
D2
Data
0
0
8bit
0
0
LSB
80H (ADR = Low)
84H (ADR = High)
D1
D1
D1
D1
LSB
0
0
Don’t Care
Don’t Care
A
1bit 1bit
P
D0
D0
D0
D0
0
0