NJU26125VC2 NJRC [New Japan Radio], NJU26125VC2 Datasheet

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NJU26125VC2

Manufacturer Part Number
NJU26125VC2
Description
Seat Positioning Surround Decoder
Manufacturer
NJRC [New Japan Radio]
Datasheet
- Software
- Hardware
Ver.2010-07-01
The NJU26125 is a high performance 24-bit digital signal processor.
The NJU26125 provides NJRC Original Car Surround technology.
These kinds of sound functions are suitable for Car Audio that has four channel
output speakers.
Seat Positioning Surround
General Description
FEATURES
Input Trimmer
7 Band PEQ: PEQ, LPF, HPF, LSF, HSF
Filter: HPF(SDO0/SDO1), LPF(SDO2)
Simulated Stereo
Master Volume & Channel Trimmer
Navigation Voice Mix Trimmer
24bit Fixed-point Digital Signal Processing
Maximum System Clock Frequency : 12.288MHz Max. built-in PLL Circuit
Digital Audio Interface
Digital Audio Format
Master / Slave Mode
Host Interface
Power Supply
Input terminal
Package
- Master Mode, MCK : 384fs @32kHz, 256fs @48kHz
Car Surround
Elevation
Bass Enhance
Seat Positioning Surround Decoder
: 3 Input ports / 3 Output ports
: I
: I
: 3.3V
: 5V Input tolerant
: SSOP24-C2 (Pb-Free)
2
2
S 24bit, Left- justified, Right-justified, BCK : 32/64fs
C bus (Fast-mode/400kbps)
Package
NJU26125VC2
NJU26125
- 1 -

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NJU26125VC2 Summary of contents

Page 1

... Digital Audio Format Master / Slave Mode - Master Mode, MCK : 384fs @32kHz, 256fs @48kHz Host Interface Power Supply Input terminal Package Ver.2010-07- Input ports / 3 Output ports 24bit, Left- justified, Right-justified, BCK : 32/64fs bus (Fast-mode/400kbps Input tolerant : SSOP24-C2 (Pb-Free) NJU26125 ■ Package NJU26125VC2 - 1 - ...

Page 2

NJU26125 ■ Function Block Diagram SCL INTERFACE SDA RESETb MCK TIMING CLKOUT GENERATOR / PLL CLK SLAVEb Internal Pow er (1.8V) Built-in LDO VREGO External Low -ESR 1.8V level terminal Capacitors Required - 2 - 24Bit Fixed-point ...

Page 3

DSP Block Diagram SDI0 Lch copy Bass Input Trim to Rch Enhance SDI1 Input Trim SDI2 Navigation Voice * Simulated Stereo and Phase Shifter do not work at the same Ver.2010-07-01 Phase Shifter ...

Page 4

NJU26125 ■ Pin Configuration RESETb BCK 3 SDI2 4 SDI1 5 SDI0 6 MCK 7 VDD 8 VSS 9 STBYb 10 VSS 11 VREGO 12 ■ Pin Description Table 1 Pin Description No. Symbol I/O Description 1 ...

Page 5

Absolute Maximum Ratings Table 2 Absolute Maximum Ratings Parameter Supply Voltage * Supply Voltage Bypass * In I/O, OD Pin Voltage * Out CLK CLKOUT Power Dissipation Operating Voltage Storage Temperature * The LSI must be used inside of ...

Page 6

NJU26125 ■ Electric Characteristics Table 3 Electric Characteristics Parameter *1 Operating Voltage Operating Current High Level Input Voltage Low Level Input Voltage *3 High Level Output Voltage Low Level Output Voltage *4 Leakage Current Clock Frequency *5 Clock Jitter Clock ...

Page 7

Power Supply, Input/Output terminal, Clock, Reset 1.1 Power Supply The NJU26125 has a power supply V should be implemented at the all power supply terminals. The NJU26125 include a built-in power supply (LDO) for internal logic. A built-in power ...

Page 8

NJU26125 1.4 Reset To initialize the NJU26125, RESETb pin should be set Low level during some period. After some period of Low level, RESETb pin should be High level. This procedure starts the initialization of the NJU26125. After the power ...

Page 9

Digital Audio Clock Digital audio data needs to synchronize and transmit between digital audio systems. The NJU26125 - master mode / slave mode - both of the modes are supported Master mode; Use the clock of BCKO ...

Page 10

NJU26125 Table 6 Input clock (In Slave mode) Mode Clock Signal LR BCK (32fs) BCK (64fs) DSP MCK Slave (SLAVEb=”L”) MCK (SLAVEb=”H”) Table 7 Output clock (In Master mode) Mode Clock Signal LR DSP BCK (32fs) Master BCK (64fs) MCK ...

Page 11

Digital Audio Interface 3.1 Digital Audio Data Format The NJU26125 can use three kinds of formats hereafter as industry-standard digital audio data format MSB is put on the 2nd bit of LR clock change ...

Page 12

NJU26125 The NJU26125 can use three kinds of formats hereafter as industry-standard digital audio data format; ( (2) Left-Justified (3) Right-justified and 24bits data length. (Fig.6-1 to Fig6-12) An audio interface ...

Page 13

LRI, LRO BC KI LRI, LRO BCKI, BCKO ...

Page 14

NJU26125 3.3 Serial Audio Input Timing Table 10 Serial Audio Input Timing Parameters Parameter BCK Frequency * BCK Period * Low Pulse Width High Pulse Width BCK to LR Time ** LR to BCK Time ** Data Setup Time Data ...

Page 15

Host Interface The NJU26125 can be controlled via Serial Host Interface (SHI) using I packets (1 byte) when using either format. Refer to serial Host Interface Pin Description.(Table 12) Table 12 Serial Host Interface Pin Description Pin No. 16 ...

Page 16

NJU26125 2 Table bus Interface Timing Parameters Parameter SCL Clock Frequency Start Condition Hold Time SCL “Low” Duration SCL “High” Duration Start Condition Setup Time *1 Data Hole Time Data Setup Time Rising Time Falling Time Stop ...

Page 17

Pin setting The NJU26125 operates default command setting after resetting the NJU26125. In addition, the NJU26125 restricts operation at power on by setting PROC pin (No.17) (Table 15). This pin is input pin. However, this pin operates as bi-directional ...

Page 18

NJU26125 ■ NJU26125 Command Table Table 16 NJU26125 Command No. Command 1 Set Task 2 System State 3 Sample Rate Select 4 Smooth Control Config 5 Master Volume Control 6 Channel Trim Control 7 Input Trim 8 Surround Gain 9 ...

Page 19

Package SSOP24-C2, Pb-Free Ver.2010-07-01 NJU26125 [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 ...

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