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NJU26226 -1- Ver.2011-12-26 Dolby Virtual Speaker / Dolby Headphone with Dolby Pro Logic IIx Decoder ! General Description NJU26226 expand stereo or 5.1 surround signal to 6.1 or 7.1 channel surround sound by Dolbyfi Pro Logicfi IIx technology. NJU26226 provides a highly realistic multi channel speaker surround sound listening environment from as few as headphone or two speakers using Dolbyfi Pro Logicfi IIx and Dolbyfi Headphone / Dolbyfi Virtual Speaker technology. NJU26226 is suitable for Gaming Headsets, digital TVs, stereo mini-components, PCs, and any audio/visual products. ! Features -Software # Dolby Pro Logic IIx (Max 7.1ch Output) # Dolby Virtual Speaker * # Dolby Headphone # Bass Management system * # Pink Noise Generator # Multi-channel signals input (Max 7.1ch Input) *: Dolby Virtual Speaker and Bass Management effective only up to 5.1 channels. -Hardware # 24bit Fixed-point Digital Signal Processing # Maximum Clock Frequency : 12.288MHz(Standard), built-in PLL Circuit # Digital Audio Interface : 4 Input ports / 4 Output ports # Digital Audio Format : I 2 S 24bit, left-justified, right-justified, BCK : 32fs/64fs # Master / Slave Mode - In Master mode, MCK : 256fs @fs=48kHz / 384fs @fs=32kHz # Microcomputer Interface - I 2 C Bus (Standard-mode/100kbps, Fast-mode/400kbps) - 4 -Wire Serial Bus (4-Wire: Clock, Enable, Input data, Output data) # Operating Voltage : V DD = V DDPLL = 1.8V : V DDIO = 3.3V # Input Terminal : 5.0V Input tolerant # Package : SSOP44 (Pb-Free) * The detail hardware specification of the NJU26226 is described in the NJU26200 Series Hardware Data Sheet. Package NJU26226V

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NJU26226

- 1 -Ver.2011-12-26

Dolby Virtual Speaker / Dolby Headphone

with Dolby Pro Logic IIx Decoder ! General Description NJU26226 expand stereo or 5.1 surround signal to 6.1 or 7.1 channel surround sound by Dolby® Pro Logic® IIx technology. NJU26226 provides a highly realistic multi channel speaker surround sound listening environment from as few as headphone or two speakers using Dolby® Pro Logic® IIx and Dolby® Headphone / Dolby® Virtual Speaker technology. NJU26226 is suitable for Gaming Headsets, digital TVs, stereo mini-components, PCs, and any audio/visual products. ! Features -Software # Dolby® Pro Logic® IIx (Max 7.1ch Output) # Dolby® Virtual Speaker * # Dolby® Headphone # Bass Management system * # Pink Noise Generator # Multi-channel signals input (Max 7.1ch Input) *: Dolby Virtual Speaker and Bass Management effective only up to 5.1 channels.

-Hardware # 24bit Fixed-point Digital Signal Processing # Maximum Clock Frequency : 12.288MHz(Standard), built-in PLL Circuit # Digital Audio Interface : 4 Input ports / 4 Output ports # Digital Audio Format : I2S 24bit, left-justified, right-justified, BCK : 32fs/64fs # Master / Slave Mode

- In Master mode, MCK : 256fs @fs=48kHz / 384fs @fs=32kHz # Microcomputer Interface

- I2C Bus (Standard-mode/100kbps, Fast-mode/400kbps) - 4 -Wire Serial Bus (4-Wire: Clock, Enable, Input data, Output data)

# Operating Voltage : VDD = VDDPLL = 1.8V : VDDIO = 3.3V

# Input Terminal : 5.0V Input tolerant # Package : SSOP44 (Pb-Free)

* The detail hardware specification of the NJU26226 is described in the NJU26200 Series Hardware Data Sheet.

Package

NJU26226V

NJU26226

- 2 - Ver.2011-12-26

! Block Diagram

TIMINGGENERATOR

/ PLL

PROGRAMCONTROL

ALU

24-BIT x 24-BITMULTIPLIER

ADDRESS GENERATION UNIT

FIRMWAREROM

DATARAM

SERIALHOST

INTERFACE

General I/OINTERFACE

SDO0

SDO3

BCKI

SCL/SCK

SDA/SDOUT

AD1/SDIN AD2/SSb

CLK

CLKOUT

RESETb

24bit Fixed-point DSP Core

SDO1

LRI

MCK

BCKO

LRO

NJU26226

SDO2

WDC

SEL

MUTEb

PROC

SERIAL AUDIOINTERFACE SDI0

SDI3

SDI1

SDI2

Fig. 1 NJU26226 Hardware Block Diagram

! Function Block Diagram

NJU26226 Features Overview

Pink NoiseGenerator

L/R

C/SW

Ls/Rs

Lb/Rb

L/R

C/SW

Ls/Rs

Lb/Rb

Pro Logic IIx

Dolby VirtualSpeaker (5.1ch)

/D

olby Headphone (7.1ch)

Output Trim

mer

(Master &

L/R/C

/Ls/Rs/Lb/R

b/Sw)

Dolby Virtual Speaker / Bass Management are only effective for 5.1ch signal

Input Trimm

er

Bass M

anagement

Fig. 2.1 NJU26226 Block Diagram (Outline)

NJU26226

- 3 -Ver.2011-12-26

SDI2

SDI3

MUTE

SDI0

SDI1

L/R

SDI2

SDI3

MUTE

SDI0

SDI1

C/SW

SDI2

SDI3

MUTE

SDI0

SDI1

Ls/Rs

SDI2

SDI3

MUTE

SDI0

SDI1

Lb/Rb

Ls/Rs

Lb/Rb

MUTE

L/R

C/SW

SDO0

Ls/Rs

Lb/Rb

MUTE

L/R

C/SW

SDO1

Ls/Rs

Lb/Rb

MUTE

L/R

C/SW

SDO2

Ls/Rs

Lb/Rb

MUTE

L/R

C/SW

SDO3

Input signal select Output signal select

Fig. 2.2 NJU26226 Block Diagram (Input Select block, Output Select block)

NJU26226

- 4 - Ver.2011-12-26

ProLogic IIx

Input Trimm

er

Lb

Sw

Rb

Ls

Rs

L

R

C

Dolby H

eadphone

+ LPF +

++

L out

R out

Ls/Rs delay

input mode = 2.1chDolbyHeadphone enable

Lb/Rb delay

Sw out

PLIIx SW

LFE Gen. SW

SW Downmix SW

Fig. 2.3 NJU26226 Block Diagram (detail)

ProLogic IIx

Input Trimm

er

Lb

Sw

Rb

Ls

Rs

L

R

C

Dolby H

eadphone

+ LPF +

++

L out

R out

input mode = 5.1chDolbyHeadphone enable

Ls/Rs delay

Lb/Rb delay

Sw out

L/R/C

delay

PLIIx SW

LFE Gen. SW

SW Downmix SW

Fig. 2.4 NJU26226 Block Diagram (detail)

Ls/Rs delay

Lb/Rb delay

Input Trimm

er

Lb

Sw

Rb

Ls

Rs

L

R

C

Dolby H

eadphone

+ LPF +

++

L out

R out

input mode = 7.1chDolbyHeadphone enable

Sw out

LFE Gen. SW

SW Downmix SW

Fig. 2.5 NJU26226 Block Diagram (detail)

NJU26226

- 5 -Ver.2011-12-26

ProLogic IIx

Input Trimm

er

Lb

Sw

Rb

Ls

Rs

L

R

C

+ LPF +

input mode = 2.1chDolby Headphone / Dolby Virtual Speaker disable

Lb out

Sw out

Rb out

Ls out

Rs out

L out

R out

C out

Ls/Rs delay

Lb/Rb delay

C delay

PLIIx SW

LFE Gen. SW

BM SW

Bass M

anagement

ProLogic IIxTwo- To

Four ChannelExpander

PLIIx SW

Control Voltage

Fig. 2.6 NJU26226 Block Diagram (detail)

Lb

Sw

Rb

Ls

Rs

L

R

C

+ LPF +

input mode = 5.1chDolby Headphone / Dolby Virtual Speaker disable

Lb out

Sw out

Rb out

Ls out

Rs out

L out

R out

C out

Ls/Rs delay

Lb/Rb delay

C delay

PLIIx SW

LFE Gen. SW

BM SW

ProLogic IIx

L/R/C

delay

Bass M

anagement

Input Trimm

er

Fig. 2.7 NJU26226 Block Diagram (detail) Input Trim

mer

Lb

Sw

Rb

Ls

Rs

L

R

C

+ LPF +

input mode = 7.1chDolby Headphone / Dolby Virtual Speaker disable

Bass

Managem

ent

Lb out

Sw out

Rb out

Ls out

Rs out

L out

R out

C out

Ls/Rs delay

Lb/Rb delay

C delay

LFE Gen. SW

BM SW

Fig. 2.8 NJU26226 Block Diagram (detail)

NJU26226

- 6 - Ver.2011-12-26

Ls/Rs delay

Sw out

Ls out

Rs out

L out

R out

C out

input mode = 2.1chDolby Virtual Speaker enable, 2speaker layout / 3speaker layout

ProLogic II

Input Trimm

er

Sw

Ls

Rs

L

R

C

Dolby

Virtual Speaker

+ LPF +

++

Ls/Rs delay

Bass M

anagement

PLII SW

LFE Gen. SW

SW Downmix SW

BM SW

Fig. 2.9 NJU26226 Block Diagram (detail)

Ls/Rs delay

Sw out

Ls out

Rs out

L out

R out

C out

input mode = 2.1chDolby Virtual Speaker enable, 4speaker layout / 5speaker layout

ProLogic II

Input Trimm

er

Sw

Ls

Rs

L

R

C

Dolby

Virtual Speaker

+ LPF +

++

Bass M

anagement

Ls/Rs delay

PLII SW

LFE Gen. SW

SW Downmix SW

BM SW

Fig. 2.10 NJU26226 Block Diagram (detail)

Sw out

Ls out

Rs out

L out

R out

C out

input mode = 5.1chDolby Virtual Speaker enable

Input Trimm

er

Sw

Ls

Rs

L

R

C

Dolby

Virtual Speaker

+ LPF +

++

Bass M

anagement

Ls/Rs delay

LFE Gen. SW

SW Downmix SW

BM SW

Fig. 2.11 NJU26226 Block Diagram (detail)

NJU26226

- 7 -Ver.2011-12-26

Bass M

anagement

HPF / Through

(Depend on

Ls/Rs speaker

size setting)

L

R

C

SW

Ls

Rs

Lb

Rb

Bass ManagementLFE Trim

Bass M

anagement M

aster Volume

L

R

C

SW

Ls

Rs

Lb

Rb

Bass ManagementL Trim

Bass ManagementR Trim

Bass ManagementC Trim

Bass ManagementSW Trim

Bass ManagementLs Trim

Bass ManagementRs Trim

Bass ManagementLs Trim

Bass ManagementRs Trim

BASS MANAGEMENT BLOCK

Fig. 2.12 NJU26226 Block Diagram (Bass Management block)

L

R

C

SW

Ls

Rs

Lb

Rb

PINK NOISE GENERATOR BLOCK

L

R

C

SW

Ls

Rs

Lb

Rb

PNG enable SW

Pink NoiseGenerator

Fig. 2.13 NJU26226 Block Diagram (Pink Noise Generator block)

NJU26226

- 8 - Ver.2011-12-26

L

R

C

SW

Ls

Rs

Lb

Rb

DVS/DH L/R input Trimmer

DVS/DH Center input Trimmer

DVS/DH LS/RS input Trimmer

DVS/DH LB/RB input Trimmer

DVS/DH LFE input Trimmer

DVS/DH stereo bypass downmix trimmer (front)

DVS/DH stereo bypass downmix trimmer (center)

DVS/DH stereo bypass downmix trimmer (surround)

DVS/DH stereo bypass downmix trimmer(back surround)

DVS/DH stereo bypass downmix trimmer (lfe)

Dolby H

eadphoneLt/R

t Dow

nmix

Lo/Ro D

ownm

ixB

ypass

DOLBY HEADPHONE BLOCK DVS/DH output mode

L

R

C

SW

Ls

Rs

Lb

Rb

-6dB

Fig. 2.14 NJU26226 Block Diagram (Dolby Headphone block)

L

R

C

SW

Ls

Rs

Lb

Rb

DVS/DH L/R input Trimmer

DVS/DH Center input Trimmer

DVS/DH LS/RS input Trimmer

DVS/DH LFE input Trimmer

DVS/DH stereo bypass downmix trimmer (front)

DVS/DH stereo bypass downmix trimmer (center)

DVS/DH stereo bypass downmix trimmer (surround)

DVS/DH stereo bypass downmix trimmer(back surround)

DVS/DH stereo bypass downmix trimmer (lfe)

Lt/Rt D

ownm

ixLo/R

o Dow

nmix

Bypass

DVS/DH output mode

L

R

C

SW

Ls

Rs

Lb

Rb

Dolby

Virtual Speaker

DOLBY VIRTUAL SPEAKER BLOCK

-6dB

Fig. 2.15 NJU26226 Block Diagram Block Diagram (Dolby Virtual Speaker block)

NJU26226

- 9 -Ver.2011-12-26

! Pin Configuration

Fig. 3 NJU26226 Pin Configuration

NJU26226

SSOP44

44 43 42 41 40 39 38 37

1 2 3 4 5 6 7 8 9

10 11 12

VDD VSS

VSSIO VDDIO SDO0 SDO1 SDO2 SDO3

SDI3 SDI2 SDI1 SDI0 LRI

VDDIO BCKI VSS VDD

TEST MUTEb WDC

13 14 15 16

PROC VSSIO VDDIO SEL

36 35 34 33

LRO BCKO MCK

VDDIO

17 18 19 20

VDDPLL VSSPLL

VSS VDD

21 22

CLKOUT CLK

32 31 30 29

SDA/SDOUT

SCL/SCK AD2/SSb AD1/SDIN

28 27 26 25

TEST TEST TEST

RESETb 24 23

VDDIO VSSIO

NJU26226

- 10 - Ver.2011-12-26

! Pin Description Table 1 Pin Description

Pin No. Symbol I/O Function 1 SDI3 I Audio Data Input ch.3 2 SDI2 I Audio Data Input ch.2 3 SDI1 I Audio Data Input ch.1 4 SDI0 I Audio Data Input ch.0 5 LRI I LR Clock Input 6 VDDIO - I/O Power Supply +3.3V 7 BCKI I Bit Clock Input 8 VSS - DSP Core Power Supply GND 9 VDD - DSP Core Power Supply +1.8V

10 TEST * I for test connect with VSSIO through 3.3kohm resistance.

11 MUTEb * I Master Volume Status after reset 1: 0dB, 0: Mute 12 WDC * OD Watchdog Clock output pin (Open drain output)

13 PROC * I Signal Processing after reset 1: Normal Processing, 0: Waiting for a Command without Processing

14 VSSIO - I/O Power Supply GND 15 VDDIO - I/O Power Supply +3.3V 16 SEL I Host Interface Selection 1: Serial Interface, 0: I2C bus 17 VDDPLL - PLL Power Supply +1.8V 18 VSSPLL - PLL Power Supply GND 19 VSS - DSP Core Power Supply GND 20 VDD - DSP Core Power Supply +1.8V 21 CLKOUT O OSC Clock Output 22 CLK I OSC Clock Input (12.288MHz) 23 VSSIO - I/O Power Supply GND 24 VDDIO - I/O Power Supply +3.3V 25 RESETb I Reset (RESETb=0: DSP Reset) 26 TEST I for test (connect to VDDIO) 27 TEST I for test (connect to VSSIO) 28 TEST I for test (connect to VSSIO) 29 AD1/SDIN I I2C Address (I2C mode) / Serial In (4-wire serial mode) 30 AD2/SSb I I2C Address (I2C mode) / Serial enable (4-wire serial mode) 31 SCL/SCK I I2C SCL (I2C mode) / Serial clock (4-wire serial mode) 32 SDA/SDOUT I/O I2C SDA (I2C mode) / Serial Out (4-wire serial mode) 33 VDDIO - I/O Power Supply +3.3V 34 MCK O A/D, D/A clock output (buffer output of a CLK pin) 35 BCKO O Bit Clock Output 36 LRO O LR Clock Output 37 SDO3 O Audio Data Output ch.3 38 SDO2 O Audio Data Output ch.2 39 SDO1 O Audio Data Output ch.1 40 SDO0 O Audio Data Output ch.0 41 VDDIO - I/O Power Supply +3.3V 42 VSSIO - I/O Power Supply GND 43 VSS - DSP Core Power Supply GND 44 VDD - DSP Core Power Supply +1.8V

I : Input O : Output OD : Open Drain Output I/O : Bi-directional

Note: Pins symbol with * : Connect with VDDIO or VSSIO through 3.3kΩ resistance

NJU26226

- 11 -Ver.2011-12-26

! Audio Interface The NJU26226 audio interface provides industry serial data formats of I2S, MSB-first Left-justified or MSB-first Right-justified. The NJU26226 audio interface provides four data inputs, SDI0, SDI1, SDI2 and SDI3, and four data outputs, SDO0, SDO1, SDO2 and SDO3, as shown in table 2 and 3.

Table 2 Serial Audio Input Pin Pin No. Symbol Description

4 SDI0 3 SDI1 4 SDI2 1 SDI3

The input signal to L/R, C/Sw, Ls/Rs and Lb/Rb can be selected from SDI0, SDI1, SDI2, and

SDI3 (refer to Fig 2.2).

Table 3 Serial Audio Output Pin Pin No. Symbol Description

40 SDO0 L/R, C/Sw, Ls/Rs Lb/Rb, or Mute can be selected (refer to Fig 2.2). 39 SDO1 L/R, C/Sw, Ls/Rs Lb/Rb, or Mute can be selected (refer to Fig 2.2). 38 SDO2 L/R, C/Sw, Ls/Rs Lb/Rb, or Mute can be selected (refer to Fig 2.2). 37 SDO3 L/R, C/Sw, Ls/Rs Lb/Rb, or Mute can be selected (refer to Fig 2.2).

Note: L/R : Front channel C/Sw : Center channel and Sub woofer Ls/Rs: Surround channel Lb/Rb: Surround back channel

! Host Interface The NJU26226 can be controlled via Serial Host Interface (SHI) using either of two serial bus formats : I2C bus or 4-Wire serial bus. Data transfers are in 8 bits packets (1 byte) when using either format. The SHI operates only in a SLAVE fashion. A host controller connected to the interface always drives the clock (SCL / SCK) line and initiates data transfers, regardless of the chosen communication protocol. The detail I2C bus and 4-Wire Serial bus information are described in the NJU26200 Series Hardware Data Sheet.

Table 4 Serial Host Interface Pin Descriptions Pin No. Symbol Setting Host Interface

Low I2C Bus Interface 16 SEL High 4-Wire Serial Interface

Table 5 Serial Host Interface Pin Description Pin No. Symbol

(I2C /Serial) I2C bus Interface 4-Wire Serial Interface

29 AD1/SDIN I2C Address Select Bit1 Serial data input 30 AD2/SSb I2C Address Select Bit2 Slave select 31 SCL/SCK Serial Clock Serial Clock 32 SDA/SDOUT Serial Data Input/Output

(Open Drain output) Serial data output

(CMOS Output) Note: When 4-Wire Serial bus is selected, The SDA/SDOUT pin is CMOS output. The SDOUT pin does not require a

pull-up resistance. When I2C Bus is selected, this pin is a bi-directional Open Drain output. This pin, which is assigned for I2C Bus, requires a pull-up resistance. The SDA/SDOUT pin isnt 5.0V Input tolerant. Please note the voltage level (Max voltage is VDDIO).

NJU26226

- 12 - Ver.2011-12-26

! I2C Bus

When the NJU26226 is configured for I2C bus communication in SEL=Low, the serial host interface transfers data on the SDA pin and clocks data on the SCL pin. SDA is an open drain pin requiring a pull-up resistance. Pins AD1 and AD2 are used to configure the seven-bit SLAVE address of the serial host interface. (Table 6)

Table 6 I2C-Bus Interface Slave address

* SLAVE address is 0 when AD1/2 is Low. SLAVE address is 1 when AD1/2 is High.

Note: The serial host interface supports Standard-Mode (100kbps) and Fast-Mode (400kbps) I2C bus data transfer. Moreover, after sending S ("START" condition), Sr (repeated "START" condition) is not received but it becomes the waiting for the P ("STOP" condition). Therefore, please be sure to send P ("STOP" condition).

! 4-Wire Serial Interface

The serial host interface can be configured for 4-Wire Serial bus communication by setting SEL1=High during the Reset Sequence initialization. SHI bus communication is full-duplex; a write byte is shifted into the SDIN pin at the same time that a read byte is shifted out of the SDOUT pin. Data transfers are MSB first and are enabled by setting SSb = Low. Data is clocked into SDIN on rising transitions of SCK. Data is latched at SDOUT on falling transitions of SCK except for the first byte(MSB) which is latched on the falling transitions of SSb. The SDOUT pin is always CMOS output. This pin does not require a pull-up resistance.

Fig. 4 4-Wire Serial Interface Timing

Note : When the data-clock is less than 8 clocks, the input data is shifted to LSB side and is sent to the DSP core at the transition of SSb=High.

When the data-clock is more than 8 clocks, the last 8 bit data becomes valid. After sending LSB data, SDOUT transmits the MSB data which is received via SDIN until SSb becomes High.

bit7 bit6 bit5 bit4 bit3

AD2 bit2

AD1 bit1

R/W bit0

0 0 1 1 1 0 0 0 0 1 1 1 0 1 0 0 1 1 1 1 0 0 0 1 1 1 1 1

R/W

Start bit R/W

bit ACK

Slave Address ( 7bit )

SDIN

SDOUT

SCK

SSb

bit5 bit1bit7 bit0bit6

bit1bit7 bit0bit6 bit5 unstable unstable MSB LSB

NJU26226

- 13 -Ver.2011-12-26

! Pin setting The NJU26226 operates default command setting after resetting the NJU26226. In addition, the NJU26226 restricts operation at power on by setting PROC pin and MUTEb pin (Table 7). These pins are input pin. However, these pins operate as bi-directional pins. Connect with VDDIO or VSSIO through 3.3kΩ resistance.

Table 7 Pin setting Pin No. Symbol Setting Function

High The NJU26226 operates default setting after reset. 13

PROC Low The NJU26226 does not operate after reset. Sending start

command is required for starting operation. High Master volume is set 0dB after reset. 11 MUTEb Low Master volume is set mute after reset.

! WatchDog Clock

The NJU26226 outputs clock pulse through WDC (Pin No.8) during normal operation. The WDC clock is useful to check the status of the NJU26226 operation. For example, a microcomputer monitors the WDC clock and checks the status of the NJU26226. When the WDC clock pulse is lost or not normal clock cycle, the NJU26226 does not operate correctly. Then reset the NJU26226 and set up the NJU26226 again. The WDC clock is able to be variable for 10ms to 640ms by command. Default setting of WDC clock is 200ms. The WDC pin is open drain output. The WDC pin setting (Table 8)

Table 8 WDC pin setting

Note: The cycle of WDC output is rough. Because WDC output inserts in the process of sound processing. In slave mode, when there is no input of BCKI/LRI, the WDC pin cant output. It is required to set up a sampling rate correctly.

Pin No. Symbol Setting WDC pin is used. Connect with VDDIO through 3.3kΩ resistance

12 WDC WDC pin is not used. Connect with VSSIO through 3.3kΩ resistance.

Do not open WDC pin.

NJU26226

- 14 - Ver.2011-12-26

! Firmware Command Table

Table 9 NJU26226 Command No. Command 1 SET_TASK_CMD

2 PRO2MODE_CMD

3 PRO2CDCFG_CMD

4 PRO2FLAGS_CMD

5 DVS_DH_CMD

6 BM_CONFIG_CMD

7 SAMPLERATE_CMD

8 PNG_MODE_CMD

9 DELAY_CMD

10 GAIN_CMD

11 SYSTEM_STATE_CMD

12 WATCHDOG_CMD

13 SMOOTH_CMD

14 INPUT_SEL_CMD

15 OUTPUT_SEL_CMD

16 REINIT_CMD

17 SOFTWARE_RESET_CMD

18 START_CMD

19 NOP_CMD

Notes : In respect to detail command information, request New Japan Radio Co., Ltd. and permission of a licenser (Dolby) is required.

License Information The Word DOLBY, Pro Logic and the double D mark are trademarks of Dolby Laboratories. The NJU26226 can only be delivered to licensees of Dolby Laboratories. Please refer to the licensing application manual issued by Dolby Laboratories.

[CAUTION] The specifications on this databook are only

given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.