NJU26901 PDF даташит
Спецификация NJU26901 изготовлена «JRC» и имеет функцию, называемую «Delay». |
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Детали детали
Номер произв | NJU26901 |
Описание | Delay |
Производители | JRC |
логотип |
7 Pages
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NJU26901
Digital Audio Delay
General Description
Package
The NJU26901 is a digital audio delay. The NJU26901 provides delay-time
adjustment function and digital audio interface.
FEATURES
NJU26901E2 NJU26901M
• 2-Channel Audio Delay (24 bits data width).
Delay Time 85msec at fs = 48kHz ( 128msec at fs = 32kHz , 43msec at fs = 96kHz)
• 4 delay time modes( ¼, ½, ¾, 1 max. delay ) are selectable without a micro-computer.
• To make long delay time, the NJU26901 can be connected serially.
• Non-audio-signal data can be delayed by the NJU26901.
Hardware Specification
• Digital Audio Interface
• Digital Audio Format
• Audio Bit Clock (BCK) Frequency
• Package
• Power Supply
: 1 Input port / 1 Output port
: I2S 24bit BCK : 64fs, Slave Mode
: 13MHz Max ( approximate fs=200KHz)
: EMP8, DMP8 ( Pb-Free )
: 2.5V ( +3.3V input tolerant )
Function Block Diagram
LRI
BCKI
SDI
SERIAL
AUDIO
INTERFACE
L/R in
NJU26901
BCKI
LRI
Delay
RAM
SERIAL
AUDIO
INTERFACE
L/R out
Control
Logic
COUNT[1:0]
Fig. 1 Function Block Diagram
SDO
Ver.2007-01-31
-1-
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NJU26901
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Pin Assignment
SDI 1
LRI 2
BCKI 3
VSS 4
NJU26901
8 VDD
7 SDO
6 COUNT[1]
5 COUNT[0]
Pin Description
Fig. 2 Pin Assignment
Table 1 Pin Description
Pin No. Symbol
I/O
1 SDI
I
2 LRI
I
3 BCKI
I
4 VSS
-
5 COUNT[0]
Ipu
6 COUNT[1]
Ipu
7 SDO
O
8 VDD
-
I : Input
Ipu : Input(internal pull-up)
O : Output
Description
Audio Data Input
LR Clock Input
Bit Clock Input
GND
Delay Time Control 0
Delay Time Control 1
Audio Data Output
Power Supply +2.5V
Absolute Maximum Ratings
Table 2 Absolute Maximum Ratings
Parameter
Symbol
Power Supply Voltage
VDD
Input Pin Voltage
VTMI
Power Dissipation
Operating Temperature
Storage Temperature
PD
TOPR
TSTR
Rating
-0.3 to +3.05
-0.3 to +3.6 (VDD ≥ 2.25V)
-0.3 to +3.05 (VDD < 2.25V)
100
-40 to +85
-40 to +125
Units
V
V
mW
°C
°C
-2-
Ver.2007-01-31
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Electric Characteristics
NJU26901
Table 3 Electric Characteristics
Parameter
Symbol
Operating VDD Voltage
VDD
Operating Current
IDD
Operating Temperature
High Level Input Voltage
Low Level Input Voltage
TOPR
VIH
VIL
High Level Output Voltage
VOH
Low Level Output Voltage
Input Current
Input Current
Input Capacitance
Input Rise/Fall transition Time
VOL
IIN
IIN(PU)
CIN
tr / tf
Test Condition
BCKI:13MHz
SDO:CL=25pF
IOH= -2mA
IOH= -100µA
IOL= 2mA
IOL= 100µA
VIN= VSS to 3.6V
VIN= VSS to 3.6V
(VDD=2.5V,Ta=25°C)
Min. Typ. Max. Units
2.25 2.5 2.75
V
- 1.0 - mA
-40 25 85 °C
2.0 - 3.3 V
- - 0.5 V
VDD-0.4
VDD-0.1
-
-
-
-
V
-
-
-
-
0.4
0.1
V
-15 - +15 µA
-100 - +15 µA
- 10 - pF
- - 100 ns
Equivalent Circuit
Input
terminal
VDD
VSS
Input
terminal
VDD
VSS
Output
terminal
VDD
VSS
Input Pin #1,2,3
Input Pin #5,6
Output Pin #7
Fig. 3 Input Terminal Equivalent Circuit
Ver.2007-01-31
-3-
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