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PDF NJW1185 Data sheet ( Hoja de datos )
| Número de pieza | NJW1185 | |
| Descripción | Audio Processor / SDIP32 | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJW1185
AUDIO PROCESSOR with Input Selector
s GENERAL DESCRIPTION
The NJW1185 is a sound processor with input selector
includes all of functions processing audio signal for TV,
such as input selector, tone control, balance, volume, and
mute functions.
Also the NJW1185 includes eala and voice
enhancement.
The eala reproduces a natural surround sound with
clear vocal orientation. And also, voice enhancement gives
clear sound such as dialogs.
All of internal status and variables are controlled by I2C
BUS interface.
s PACKAGE OUTLINE
NJW1185L
s FEATURES
q Operating Voltage
7.5 to 13V
q 6ch Input Selector
q Tone Control
Bass / Treble
q eala(NJRC Original Surround System)
q Simulated Stereo
q Voice Enhancement System
q I2C BUS Interface
q Bi-CMOS Technology
q Package Outline
SDIP32
s BLOCK DIAGRAM
IN1a
IN2a
IN3a
IN4a
IN5a
IN6a
IN1b
IN2b
IN3b
IN4b
IN5b
IN6b
VOL1
VOL1
eala
VE
&
simulated
stereo
TONE
TONE
VOL2
VOL2
I2C
Bus
Inter-
f ace
CVO
CBA
CTH
CTL
Bias GND
Vcc
-1-
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! TERMINAL DESCRIPTION
PIN
NO.
SYMBOL
FUNCTION
1, 32
2, 31
3, 30
4, 29
5, 28
6, 27
INa1,INb1
INa2, INb2
INa3, INb3
INa4, INb4
INa5, INb5
INa6, INb6
Ach Input terminal 1, Bch Input terminal 1
Ach Input terminal 2, Bch Input terminal 2
Ach Input terminal 3, Bch Input terminal 3
Ach Input terminal 4, Bch Input terminal 4
Ach Input terminal 5, Bch Input terminal 5
Ach Input terminal 6, Bch Input terminal 6
NJW1185
EQUIVALENT CIRCUIT
TERMINAL
DC
VOLTAGE
2k
48k
V+/2
7 MONa Ach monitor output terminal
26 MONb Bch monitor output terminal
12 OUTa Ach Output terminal
21 OUTb Bch Output terminal
FB
50 V+/2
8 TONE-Ha Ach tone control (treble) filter terminal
25 TONE-Hb Bch tone control (treble) filter terminal
9 TONE-La Ach tone control (bass) filter terminal
24 TONE-Lb Bch tone control (bass) filter terminal
23 VE-FIL1 Voice Enhancement Filter Capacitor terminal 1
FB
PIN8,25 : 16k
PIN9,23,24:12k
PIN8,25 :16k
PIN9,23,24:12k
V+/2
10 eala-FIL eala Filter Capacitor terminal
FB
eala mode : 8k
Simulatedstreo mode : 24k
V+/2
-5-
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NJW1185
!INSTRUCTION CODE
a) MASTER VOLUME SETTING
Select
BIT
Address
D7
D6
D5
D4
D3
D2
D1
D0
00H VOL
•VOL Attenuation Level setting (0.33dB / step)
The volume control for both Ach and Bch(0.33dB/step).
The volume is consisted of volume1 and volume2 and the level is divided into half to each volume1 and
volume2.
b) BALANCE, SURROUND SETTING
Select
BIT
Address
D7
D6
D5
D4
D3
D2
01H CHS
BAL
•CHS : Channel select for balance control
“0” : Ach “Bch is attenuated”
“1” : Bch “Ach is attenuated”
• BAL : Balance control for both Ach and Bch (1dB/step)
The balance is consisted of volume1 and volume2.
<SUR : Surround Level Setting>
Surround Setting
D1 D0
Remarks
Bypass
00
Bypass
Simulated Stereo
01
Simulated Stereo
eala Effect1
10
Surround Effect Low(10dB typ.)
eala Effect2
11
Surround Effect High(16dB typ.)
D1 D0
SUR
c) TONE CONTROL BASS, VOICE ENHANCEMENT SETTING
Select
BIT
Address
D7
D6
D5
D4
D3
D2
D1
D0
03H BCB
•BCB : Boost cut select for Bass control
“0” : Cut
“1” : Boost
•BASS : BASS Level Setting
Cut Level : -15 to 0dB(1dB/Step)
Boost Level : 0 to +15dB(1dB/Step)
<VE : Voice Enhancement Setting>
VE Setting
D2
By-Pass
0
VE Effect 1
0
VE Effect 2
1
VE Effect 3
1
BASS
VE Don’t Care
D1 Remarks
0 Bypass
1 Voice Enhancement Effect Low (6dB typ.)
0 Voice Enhancement Effect Mid (10dB typ.)
1 Voice Enhancement Effect High (13dB typ.)
Note) Surround, Voice Enhancement mode switch settings
The click noise may be generated by changing the Surround, the Voice Enhancement mode.
Provide the external circuit for avoiding the click noise on above condition.
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| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet NJW1185.PDF ] | |
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