JRC NJU26101 User manual

NJU26101
-1-
Ver.2003-08-22
Digital Signal Processor for TV
■General Description
The NJU26101 is a digital signal processor that provides the
function of AGC, 3D Sound, Sound Enhancement, Tone Control,
and Digital Volume.
The NJU26101 is suitable for audio products such as TV, CD radio-cassette, speakers
system, and others.
■FEATURES
●3D sound:
eala, simulated stereo, SRS 3D Stereo, SRS 3D Mono, SRS TruSurround
BBE ViVA, BBE ViVA+
●Sound Enhancement: BBE, BBE Mach3Bass, SRS TruBass
●AGC to control sound-volume difference between channels or programs
●Tone Control
●Digital Volume
■Digital Signal Processor Specification
●24bit Fixed-point Digital Signal Processing
●Maximum Clock Frequency : 38MHz
●Digital Audio Interface : 2 Input ports / 1 Output port
●Power Supply : DSP Core : 2.5V, I/O interface: 2.5V ( +3.3V tolerant )
●Package : QFP 32pin
The detail hardware specification of the NJU26101 is described in the “ NJU26100 Series Hardware Data
Sheet”. In respect to software commands, request NJR.
■Package
NJU26101

NJU26101
- 2 - Ver.2003-08-22
■Function Block Diagram
TIMING
GENERATOR
PROGRAM
CONTROL
ALU
24-BIT x 24-BIT
MULTIPLIER
ADDRESS GENERATION UNIT
FIRMWARE
ROM
DELAY
RAM DATA RAM
SERIAL
HOST
INTERFACE
GPIO AND
CONFIGURATION
INTERFACE
SDO0
SEL1
SCL/SCK
SDA/SDOUT
AD1/SDIN AD2/SSX
XI
XO
DSP ARITHMETIC UNIT
SDI0
LRI
BCKI
MCK
BCKO
LRO
L/R
SERIAL AUDIO
INTERFACE
NJU26101
SDI1
RESETX
Fig. 1 NJU26101 Block Diagram
■DSP Block Diagram
Fig. 2 NJU26101 Function Diagram
SDI0
SDI1
A
GC Bypass Trim
A
GC Output Trim Master Volume
SDO0
eala
Simulated
Stereo
SRS 3D
Stereo
SRS 3D
Mono
SR
S
Passive Matrix
TruSurround
VIVA
VIVA+
AG
C
BBE
SRS
TruBass
Tone
Control
BBE
Mach3Bass

NJU26101
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3
-
Ver.2003-08-22
■Pin Configuration
TEST0 TEST1 SDO0 SEL1 SCL/SCK SDA/SDOUT AD1/SDIN AD2/SSX
1 2 3 4 5 6 7 8
24 23 22 21 20 19 18 17
910111213141516
3231302928272625
NJU26101
VDDC VDDC
VSSC
VDDR VDDR
VSSR VSSR
VDDO
XI
XO
VSSO
RESETX
VDDC
VSSC
WDC
SDI0
VSSC
SDI1
TEST2
LRI
BCKI
MCK
BCKO
LRO
Fig. 3 NJU26101 Pin Configuration

NJU26101
- 4 - Ver.2003-08-22
■Pin Description
Table 1 Pin Description
No. Pin Name I/O Pin Description No. Pin Name I/O Pin Description
1 TEST0 O Open 17 VDDC P
DSP Core Power
Supply +2.5V
2 TEST1 O Open 18 VDDC P
DSP Core Power
Supply +2.5V
3 SDO0 O Audio Data Output L/R 19 VSSC G DSP Core Power
Supply GND
4 SEL1 I Select I2Cor Serial bus 20 VSSC G
DSP Core Power
Supply GND
5 SCL/SCK I I2Cclock / Serial clock 21 VDDR P
I/O Power Supply
+2.5V
6 SDA/SDOUT IO
I2CI/O / Serial Out 22 VDDR P
I/O Power Supply
+2.5V
7 AD1/SDIN I I2CAddress / Serial In 23 VSSR G
I/O Power Supply
GND
8 AD2/SSX I I2CAddress/Serial enable 24 VSSR G
I/O Power Supply
GND
9 VDDO P OSC Power Supply +2.5V 25 SDI0 I Audio Data Input
10 XI I OSC Clock Input 26 SDI1 I Audio Data Input
11 XO O OSC Clock Output 27 TEST2 I Connect to GND
12 VSSO G OSC Power Supply GND 28 LRI I LR Clock Input
13 RESETX I Reset 29 BCKI I Bit Clock Input
14 VDDC P DSP Core Power Supply
+2.5V 30 MCK O A/D,D/A Clock Output
15 VSSC G DSP Core Power Supply
GND 31 BCKO O Bit Clock Output
16 WDC O Clock for Watch Dog Timer 32 LRO O LR Clock Output
* I : Input, O : Output, IO : Bi-directional, P : +Power, G : GND * Package is shown in fig. 3.

NJU26101
-
5
-
Ver.2003-08-22
■Audio Data Output
The NJU26101 audio interface provides industry standard serial data formats of I2S, MSB-first left-justified or MSB-first
right-justified. The NJU26101 audio interface provides two data inputs, SDI0 and SDI1, and a data output, SDO0, as
shown in table 2 and 3. The input serial data is selected by the firmaware command.
Table 2 Serial Audio Input Pin
Symbol Pin No. Description
SDI0 25 Audio Data Input 0 L / R
SDI1 26 Audio Data Input 1 L / R
Table 3 Serial Audio Output Pin
Symbol Pin No. Description
SDO0 3 Audio Data Output 0 L / R
■I2C address
AD1 and AD2 pins are used to configure the seven-bit SLAVE address of the serial host interface. These pins offer
additional flexibility to SLAVE address. 4 addresses could be chosen by AD1 and AD2-pin. The AD1 and AD2-pin
addresses are decided by the connections of AD1 and AD2-pin. The AD1 and AD2 addresses should be the same level
as AD1 and AD2-pin connections.
Table 4 I2C Bus SLAVE Address
bit7 bit6 bit5 bit4 Bit3 bit2 bit1 bit0
0 0 1 1 1 AD2*1AD1*1R/W
*1 AD1 or AD2 address is 0 when AD1 or AD2-pin is “L”. AD1 or AD2 address is 1 when AD1 or AD2-pin is “H”.
The detail I2Cbus timing of the NJU26101 is described in the “ NJU26100 Series Hardware Data Sheet”.

NJU26101
-
6
- Ver.2003-08-22
■Firmware Command Table
Host processor can control the NJU26101 via I2C bus or 4-Wire serial bus interface. The following table
summarizes the available user commands.
Table 5 NJU26101 Command
In respect to detail command information, request NJR.
No. Command Command Description
1 System State Serial Mode, Data Width, MCK, BCK, Master/Slave
2 Version No. Firmware Version No. Request
3 Input Select / Fs Select 32, 44.1, 48KHz
4 Input mono mode /
Smooth Control
Smooth Control : slow, medium, fast
Mono mode : L, R, Mix
5 Tone Control (Bass @100Hz) +/- 12dB
6 Tone Control (Treble @10KHz) +/- 12dB
7 Channel Balance 0dB to -30dB, inf
8 Firmware Mode Select Tone Control, Bass Boost, Sound Enhancement,
3D Surround, AGC
9 AGC Ratio / Boost AGC Boost : 0, 6, 12, 18, 24dB
AGC Ratio : 20:1, 8:1, 4:1, 2:1, inf
10 AGC Threshold Level -6dBFS to -40dBFS
11 AGC Output Trim 0dB to -31dB
12 AGC Attack Time / Release Time AGC Attack Time : 0.1, 0.2, 0.5, 1, 2, 5 [sec]
AGC Release Time : 1, 2, 5, 10, 20, 50 [msec]
13 AGC Noise Compressor Threshold
Level -50 dBFS to -96dBFS, -inf
14 AGC Bypass Trim 0dB to -31dB
15 Eala Surround Gain 0dB to +12dB
16 SRS 3D Stereo Space / Center 0dB to +15dB
17 BBE VIVA / VIVA+ Surround Gain 0dB to +6dB
18 BBE Counter / BBE Process
(BBE I) 0 to 15
19 BBE Level / BBE HF Adjust
(BBE III)
Level : 0dB to -15dB
HF Adjust : 0 to 15
20 BBE Mach3Bass fo / Q Fo : 40Hz to 150Hz
Q : 2 to 8
21 BBE Mach3Bass Gain 0dB to +12dB
22 SRS TruBass Speaker Size Medium, Small, Large
23 SRS TruBass Bass / Punch 0dB to +15dB
24 Master Volume 0dB to -96dB, -inf
25 Master Volume Boost / Dither Boost : 0, 6, 12, 18, 24dB
Dither: -98 to -128dB, off
26 NOP No Operation

NJU26101
-7-
Ver.2003-08-22
■License Information
1. The SRS technology right incorporated in the NJU26101 are owned by SRS Labs, a U.S. Corporation and licensed
to New Japan Radio Co., Ltd. “SRS”, “SRS 3D MONO”, “SRS TruSurround”, ”SRS TruBass” are protected under
U.S. and foreign patents issued and / or pending. “SRS”, “SRS 3D MONO”, “SRS TruSurround”, ”SRS TruBass”
and the are trademarks of SRS Labs, Inc. in the United States and selected foreign countries. Neither the
purchase of the NJU26101, nor the corresponding sale of audio enhancement equipment conveys the right to sell
commercialized recordings made with any SRS technology.
SRS Labs requires that all users of the NJU26101 must enter into a license agreement directly with SRS Labs if the
royalty is not Included in the purchase price. SRS Labs also requires any users to comply with all rules and
regulations as outlined in the SRS Trademark Usage Manual.
For further information, please contact:
SRS Labs, Inc.
2909 Daimler Street.
Santa Ana, CA 92705 USA
Tel: [phone] Fax: [phone] http://www.srslabs.com
2. The NJU26101 is manufactured by New Japan Radio Co.,Ltd. under license from BBE Sound Inc. BBE is a
registered trademark of BBE Sound Inc. A license from BBE Sound Inc. must be required before the NJU26101
can be purchased from New Japan Radio Co.,Ltd.
BBE Sound, Inc.
5831 Production Drive
Huntington Beach, CA 92649 USA
Tel: [phone] Fax: [phone] http://www.bbesound.com
3. Purchase of I2Ccomponents of New Japan Radio Co. ,Ltd or one of sublicensed Associated Companies conveys a
license under the Philips I2CPatent Rights to use these components in an I2C system, provided that the system
conforms to the I2CStandard specification as defined by Philips.
Ver. 1.00
[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.