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PDF NJU26903 Data sheet ( Hoja de datos )
| Número de pieza | NJU26903 | |
| Descripción | Delay | |
| Fabricantes | JRC | |
| Logotipo |  |
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Digital Audio Delay
NJU26903
General Description
The NJU26903 is a digital audio delay. The NJU26903 provides
delay-time adjustment function and digital audio interface.
Package
FEATURES
NJU26903
• Tow delay systems, 2-Channel Audio Delay (24 bits data width) per system.
Delay Time 85msec at fs = 48kHz ( 128msec at fs = 32kHz , 43msec at fs = 96kHz)
• To make long delay time, the NJU26903 can be connected serially.
The maximum delay time is 170msec at fs = 48kHz ( 256msec at fs = 32kHz )
• Non-audio-signal data can be delayed by the NJU26903.
Hardware Specification
• Digital Audio Interface
• Digital Audio Format
• Audio Bit Clock (BCK) Frequency
• Package
• Input terminal
• Power Supply
: 2 Input ports, 2 Output ports
: I2S / LJ / RJ BCK : 64fs / 32fs, 24bits , ( 32fs : 16bits only)
Slave Mode
: 13MHz Max ( approximate fs=200kHz)
: PCSP20-SGH4 ( Pb-Free )
: 3.3V Input tolerant
: 2.5V
Function Block Diagram
NJU26903
BCK
LRI
LRI
BCK
SDI 0
SDI 1
SERIAL
AUDIO
INTERFACE
L/R in
L/R in
Delay RAM
SERIAL
AUDIO
INTERFACE
L/R out
L/R out
SDO0
SDO1
( fixed-length )
Control
Logic
RESETb COUNT[5:0] MODE[1:0] SDO_OD BYPASS FS
Fig.1 NJU26903 Hardware Block Diagram
Ver.2006-08-09
-1-
1 page  
www.DataSheet4U.com
Serial Audio Timing
NJU26903
Table 4 Serial Audio Input Timing Parameters
Parameter
Symbol
Test Condition
BCKI Frequency
BCKI Period
Low Pulse Width
High Pulse Width
fBCK
tSIL
tSIH
BCKI to LRI Time
TSLI
LRI to BCKI Time
tLSI
Data Setup Time
tDS
Data Hold Time
Data Output Delay
tDH
tDOD
SDO : CL=25pF
SDO_OD=”Low”
( VDD=2.5V, VSS=0V, Ta=25°C )
Min Typ. Max Units
- - 13 MHz
35
35
-
- ns
15 -
15 -
15 -
15 -
- ns
- ns
- ns
- ns
- 15 ns
LRI
BCKI
SDI[0:1]
tSIH tSIL tSLI tLSI
tDS tDH
SDO[0:1]
tDOD
Fig.4 Serial Audio Input / Output Timing
Ver.2006-08-09
-5-
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet NJU26903.PDF ] | |
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