Princeton Technology Corp.
Digital Echo/Surround Processor IC
Tel: 886-2-29162151
Fax: 886-2-29174598
URL:
http://www.princeton.com.tw
PT2396
Description
PT2396 is a digital echo/surround processor IC utilizing CMOS Technology. Analog
Signal inputted to PT2396 is converted to digital signal by A-D converter and then
stored into the internal memory. After a certain delay time, this memory-stored
digital signal is converted back into analog signal via the D-A converter.
A low cost echo system may be achieved with the PT2396's A-D converter, D-A
converter, incorporating ADM (Adaptive Delta Modulation) Algorithm while
maintaining lower noise, lower distortion, and higher S/N ratio.
PT2396 is functionally compatible with M65831P. If you are replacing M65831P
with our PT2396, you must take note that PT2396 does not need to connect an
external resistor (30 Ohms) to Pin 15 and Pin 21.
Features
CMOS Technology
Low Power Consumption
Low Noise (-92 dBV typical)
Low Distortion (0.5% typical)
Built-in 48 K Memory
Automatic Reset Circuit Included
A-D, D-A Converters (Adaptive Delta Modulation), 2 LPFs and 48 K-bit
Memory
!
Sleep Mode Function
!
Parallel or Serial Data controlled from Micro Controller
!
!
!
!
!
!
!
Applications
!
!
!
!
KARAOKE
Electronic Musical Instruments
VCD, DVD
Radio Set
Page 1
Written Nov. 1998
PT2396 v1.2
Princeton Technology Corp.
Digital Echo/Surround Processor IC
Tel: 886-2-29162151
Fax: 886-2-29174598
URL:
http://www.princeton.com.tw
PT2396
Application Circuits
PT2396 Easy Mode Application Circuit
+5 V
IN
+
10 0µ
+
VDD
10 0p
2M H z
10 0p
D L 1/R E Q
OP1OUT
0.1µ
O P IN
47 µ
D L 3/D IN
D L 4/ID S
TEST
+5 V
E A S Y /M C U
S LE E P
+5 V
S LE E P S W
DGND
AGND
LP F 2IN
LP F 2O U T
REF
CC1
CC2
0.1µ
O P 2 IN
OP2OUT
10 K
56 0p
+
1µ
0.1µ
+
0.1µ
30 K
1µ
N o n-p ola r
D L 2/C L K
1M
OSCI
OSCO
LP F 1IN
LF P 1O U T
VCC
10 K
56 0p 15 K
56 00 p
15 K
0.1µ
1µ
S e ttin g
D e la y
Tim e
15K
15K
56 00 p
3K
P T 23 9 6
NO TE: AG ND :
DGND :
2.7K
OUT
0.01 µ
Note: 1. Every Digital GND must be connected to the Analog GND at one Point
2. When replacing M65831 with PT2396, please take note that PT2396 does
not need to connect an external resistor (30 Ohms) to Pin 15 and Pin 21.
PT2396 v1.2
Page 3
Written Nov. 1998
Princeton Technology Corp.
Digital Echo/Surround Processor IC
Tel: 886-2-29162151
Fax: 886-2-29174598
URL:
http://www.princeton.com.tw
PT2396
PT2396 MCU Mode Application Circuit
+5V
IN
+
10 0µ
+
VDD
10 0p
2M H z
10 0p
D L 1/R E Q
OP1OUT
0.1µ
O P IN
REF
CC1
CC2
0.1µ
E A S Y /M C U
SLEEP
+5V
SLEEP SW
DGND
AGND
LP F 2 IN
LP F 2 O U T
O P 2 IN
OP2OUT
10 K
56 0p
+
1µ
0.1µ
+
47 µ
0.1µ
30 K
1µ
N o n-p ola r
D L 2/C L K
D L 3/D IN
5V
D L 4/ID S
TEST
1M
OSCI
OSCO
LP F 1 IN
LF P 1 O U T
VCC
10 K
56 0p 15 K
56 00 p
15 K
0.1µ
1µ
MCU
15K
15K
56 00 p
3K
P T 23 9 6
NO TE: AGND :
DGND :
2.7K
OUT
0.01 µ
Note: 1. Every Digital GND must be connected to the Analog GND at one Point
2. For the DL4/IDs Pin (Pin No. 7), please refer below:
IDS Pin
0
1
ID1
0
0
ID2
1
1
ID3
0
0
ID4
0
1
PT2396 v1.2
Page 4
Written Nov. 1998
Princeton Technology Corp.
Digital Echo/Surround Processor IC
Tel: 886-2-29162151
Fax: 886-2-29174598
URL:
http://www.princeton.com.tw
PT2396
PT2396 Surround Application Circuit
+5 V
IN
+
10 0µ
+
VDD
10 0p
2M H z
10 0p
D L 1/R E Q
OP1OUT
0.1µ
O P IN
47 µ
D L 3/D IN
+5 V
D L 4/ID S
TEST
E A S Y /M C U
S LE E P
+5 V
S LE E P S W
DGND
AGND
LP F 2IN
LP F 2O U T
REF
CC1
CC2
0.1µ
O P 2 IN
OP2OUT
10 K
56 0p
+
1µ
0.1µ
+
0.1µ
1M
OSCI
OSCO
LP F 1IN
LF P 1O U T
VCC
10 K
56 0p 15 K
56 00 p
15 K
0.1µ
1µ
MCU
D L 2/C L K
15K
15K
56 00 p
P T 23 96
N O TE : A G N D :
DGND :
2.7K
OUT
0.01 µ
Note: 1. Every Digital GND must be connected to the Analog GND at one Point
2. For the DL4/IDs Pin (Pin No. 7), please refer below:
IDS Pin
0
1
ID1
0
0
ID2
1
1
ID3
0
0
ID4
0
1
PT2396 v1.2
Page 5
Written Nov. 1998
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