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Digital Echo/Surround Processor IC
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) to Pin 15 and Pin 21.
FEATURES
* * * * * * * * * CMOS technology Low power consumption Low noise (-92dBV typical) Low distortion (0.5% typical) Built-in 48K 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
PT2396 V1.4
-1-
December, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Digital Echo/Surround Processor IC
PT2396
PIN CONFIGURATION
VD D OSCI OSCO DL1/R EQ DL2/C LK DL3/D IN DL4/IDS T EST EA SY/(/MCU ) 1 2 3 4 5 6 7 8 9 24 23 22 20 VC C LPF 1IN LPF 1OU T OP1IN RE F CC1 CC2 OP2IN OP2OUT LPF 2IN LPF 2OU T
21 OP1OUT 19 18 17 16 15 14 13
PT23 96
SLEE P 10 DGND 11 AGND 12
PT2396 V1.4
-2-
December, 2005
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Digital Echo/Surround Processor IC
PT2396
PIN DESCRIPTION
Pin Name VDD OSCI OSCO DL1/REQ DL2/CLK DL3/DIN DL4/IDS TEST EASY/(/MCU) SLEEP DGND AGND LPF2OUT LPF2IN OP2OUT OP2IN CC2 I/O I O I I I I I I I O I O I Description Digital supply voltage Oscillator input pin This pin connects to 2MHz ceramic resonator or inputs an external clock. Oscillator output pin This pin connects to 2MHz ceramic resonator. Delay1/Request pin Easy Mode: This pin inputs DL1 data. MCU Mode: This pin inputs request data. Delay2/Shift clock pin Easy Mode: This pin inputs DL2 data. MCU Mode: This pin inputs shift clock. Delay 3/Serial data pin. Easy Mode: This pin inputs DL3 data. MCU Mode: This pin inputs serial data. Delay 4/ID switch pin Easy Mode: This pin inputs DL4 data. MCU Mode: This pin controls ID Code. Test pin Normal mode = Low EASY/(/MCU) pin. EASY mode = High MCU mode = Low Sleep pin Sleep mode = High Normal mode = Low Digital GND pin This pin connects to the Analog GND at one external point. Analog GND pin This pin connected to the Analog GND These pins form the low Low Pass Filter 2 output pin pass filter with external Low Pass Filter 2 Input pin C, R. These pins form the OP-AMP2 output pin integrator with external OP-AMP2 input pin C, R. Current control 2 pin Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
PT2396 V1.4
-3-
December, 2005
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Digital Echo/Surround Processor IC
Pin Name CC1 REF OP1IN OP1OUT LPF1OUT LPF1IN VCC I/O I O O I Description Current control 1 pin. Reference pin. Reference voltage = 1/2 VCC OP-AMP 1 input pin OP-AMP 1 output pin. Low pass filter 1 output pin Low pass filter 1 input pin Analog supply voltage pin
PT2396
Pin No. 18 19 These pins form the integrator with external C, R. These pins form the low pass filter with external C, R. 20 21 22 23 24
PT2396 V1.4
-4-
December, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Digital Echo/Surround Processor IC
PT2396
FUNCTIONAL DESCRIPTION
DELAY TIME
EASY MODE
The Easy Mode is activated when the EASY/(/MCU) Pin is in HIGH State. Under the Easy Mode; namely - DL1/REQ, DL2/CLK, DL3/DIN, and DL4/IDS are all used as inputs for Delay Time Data (DL1 ~ DL4). The Delay Pins: namely -- DL1~DL4 determine the amount of time the memory-stored signal would be stored in the 48 K-bit memory (delay time). The following table gives the various Delay Time with reference to the Pins DL1 ~ DL4. fs DL4 DL3 L H 500 L L H H L L H 250 H L H H Notes: 1. fs - sampling frequency (KHz) 2. Td = Delay Time (msec) DL2 L DL1 L H L H L H L H L H L H L H L H Td (ms) 12.3 24.6 36.9 49.2 61.4 73.7 86.0 98.3 110.6 122.9 135.2 147.5 159.7 172.0 184.3 196.6
PT2396 V1.4
-5-
December, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Digital Echo/Surround Processor IC
MCU MODE
PT2396
The MCU Mode is activated when the EASY/(/MCU) Pin is in Low State. The delay time is set by the serial data from the MCU. Please refer to the timing diagram below:
where: Delay time = DL1 ~ DL4 ID code = ID1 ~ ID4 The DIN Signal is shifted in the falling edge of the CLK Signal when the ID Code Bits values are verified as follows: ID1 and ID3 = Low ID2 = High ID4 = IDS Pin then, the last ten data bits are latched at the rising edge of the REQ Signal. When 2 pieces of PT2396 are used, Pin 7 determines which PT2396 is in control. Pin 7 may be pulled High or Low. Please refer to below: IDS Pin 0 1 ID1 0 0 ID2 1 1 ID3 0 0 ID4 0 1
PT2396 V1.4
-6-
December, 2005
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Digital Echo/Surround Processor IC SLEEP MODE FUNCTION
EASY MODE
PT2396
Also under this mode, the SLEEP Mode may be activated when the SLEEP Pin is in High State; otherwise, the Normal Mode applies.
MCU MODE
The Sleep Mode is activated when the SLEEP Pin is set to HIGH. At this point, the clock and the RAM stops in order to reduce the circuit current. When the SLEEP Pin is set to LOW, there is normal operation.
SYSTEM RESET
PT2396 features an auto-rest function. The reset time is approximately 120 msec and the delay time is set at 147.5msec if MCU Mode is enabled.
PT2396 V1.4
-7-
December, 2005
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Digital Echo/Surround Processor IC MUTE FUNCTION
EASY MODE
PT2396
Under the EASY Mode, the mute function is automatically activated under the following conditions: 1. 2. 3. Delay Time is changed. SLEEP Mode is canceled. Power is turned ON.
Condition 1: Automatic Mute Function Diagram 1 -- Delay Time Change
Condition 2: Automatic Mute Function Diagram 2 -- SLEEP Mode is canceled.
Condition 3: Automatic Mute Function Diagram 3 -- During Power ON
PT2396 V1.4
-8-
December, 2005
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Digital Echo/Surround Processor IC
MCU MODE
PT2396
From the DIN signal (DL3 Pin), if the Mute bit is read as Low, then an automatic muting function can be used (also see EASY Mode Section). Please refer to the diagrams below. However, if this Mute bit (from the DIN Pin) is read High, then normal muting function can be performed (see figure below).
PT2396 V1.4
-9-
December, 2005
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Digital Echo/Surround Processor IC
PT2396
ABSOLUTE MAXIMUM RATING
(Unless otherwise specified, Ta=25) Parameter Supply voltage Operating current Power dissipation Operating temperature Storage temperature Symbol Vcc Icc Pd Topr Tstg Ratings 5.5 100 1 -40 ~ +85 -65 ~ +150 Unit V mA W
RECOMMENDED OPERATING CONDITIONS
Parameter Supply voltage Clock frequency High input voltage Low input voltage Symbol Vcc Fck VIH VIL Min. 4.5 0.7VDD 0 Typ. 5 2 Max. 5.2 VDD 0.3VDD Unit V MHz V V
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, Vcc=5V, f=1KHz, Vi=100mVrms, Ta=25) Parameter Symbol Test Conditions Min. Operating current Icc RL=47K Voltage gain Gv THD=10% 30KHz LPF fs=500 KHz Output distortion THD Vi=1Vrms fs=250 KHz Output noise voltage Supply voltage rejection ratio Mute time Operating current (Sleep mode) VNo SVRR TMUTE Iccs DIN=0V Vcc=5V, Vp-p=100mV, f=100Hz Upon Changing Delay Time Upon canceling Sleep Mode Sleep Mode Typ. 16.0 -0.5 0.3 0.5 -92 -40 525 525 12.0 Max. 40.0 1.2 1.5 -75 -25 30.0 Unit mA dB % dBV dB ms mA
PT2396 V1.4
- 10 -
December, 2005
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Digital Echo/Surround Processor IC
PT2396
APPLICATION CIRCUITS
EASY MODE
IN
+
+
OUT
+
14
OP1IN CC1 LPF1IN LPF1OUT OP1OUT OP2OUT LPF2IN DGND OP2IN VCC REF CC2
13
LPF2OUT AGND
OSCO
OSCI
VDD
1
100
2
1M 2MHz
SLEEP SW
SLEEP
TEST
Dl2
Dl4
Dl3
Dl1
+5V
DGND
AGND
+
0.1 100P
100P
Setting Delay Time
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 V1.4
- 11 -
December, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Digital Echo/Surround Processor IC MCU MODE
PT2396
IN
+
+
OUT
+
14
LPF1 OUT OP1 OUT OP2 OUT CC1 LPF1 IN OP1 IN OP2 IN LPF2 IN DGND REF CC2 VCC
13
LPF2 OUT AGND
OSCO
SLEEP
TEST
DATA
OSCI
REQ
SCK
VDD
IDS
1
100
2
1M 2MHz
SLEEP SW
+5V
DGND
AGND
+
0.1 100P
100P
Microcomputer
5V
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 V1.4
- 12 -
December, 2005
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Digital Echo/Surround Processor IC SURROUND APPLICATION CIRCUIT
PT2396
IN
+
+
OUT
+
14
LPF1 IN OP1 IN CC1 OP1 OUT OP2 OUT LPF2 IN DGND OP2 IN VCC REF CC2 LPF1 OUT
13
LPF2 OUT AGND
1
100
2
1M 2MHz
SLEEP SW
+5V DGND AGND
+
0.1 100P
100P
Microcomputer
5V
Notes: 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 V1.4
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SLEEP
OSCO
TEST
DATA
OSCI
REQ
VDD
SCK
IDS
December, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Digital Echo/Surround Processor IC
PT2396
ORDER INFORMATION
Valid Part Number PT2396 PT2396-S Package Type 24 pins, DIP, 600mil 24 pins, SOP, 300mil Top Code PT2396 PT2396-S
PT2396 V1.4
- 14 -
December, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Digital Echo/Surround Processor IC
PT2396
PACKAGE INFORMATION
24 PINS, DIP, 600 MIL
PT2396 V1.4
- 15 -
December, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Digital Echo/Surround Processor IC
Symbol A A1 A2 B B1 C D D1 E E1 e eA eB L Min. 0.39 3.18 0.356 0.77 0.204 29.3 0.13 15.24 12.32 2.93 Nom. 2.54 BAS. 15.24 BAS. Max. 6.35 4.95 0.558 1.77 0.381 32.7 15.87 14.73 17.78 5.08
PT2396
Notes: 1. Controlling dimension: MILLIMETER 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Dimensions A, A1 and L are measured with the package seated in JEDEC Seating Plane Gauge GS-3. 4. "D" & "E1" dimensions, for ceramic packages, include allowance for glass overrun and meniscus and lid to base mismatch. 5. "D" & "E1" dimensions for plastic package, do not includes mold flash or protrusion. Mold flash or protrusions shall not exceed 0.01 inch. (0.25mm). 6. "E" and "eA" measured with the leads constrained to be perpendicular to plane T. 7. "eB" and "eC" are measured at the lead tips with the loads un-constrained. "eC" must be zero or greater. 8. "N" is the maximum quantity of lead positions. (N=24) 9. Corner leads (1, N, N/2, and N/2+1) may be configured as shown in Figure 2. 10. Pointed our rounded leads tips are preferred to ease insertion. 11. For automatic insertion, any rained irregularity on the top surface (step, mess, etc.) shall b symmetrical about the lateral and longitudinal package centerlines. 12. Refer JEDEC MS-011 Variation AA. JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2396 V1.4
- 16 -
December, 2005
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Digital Echo/Surround Processor IC 24 PINS, SOP, 300 MIL
PT2396
Symbols A A1 B C D E e H h L
PT2396 V1.4
Min. 2.35 0.10 0.33 0.23 15.20 7.40 10.00 0.25 0.40 0
- 17 -
Nom.
Max. 2.65 0.30 0.51 0.32 15.60 7.60 10.65 0.75 1.27 8
December, 2005
1.27 bsc.
Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw
Digital Echo/Surround Processor IC
PT2396
Notes: 1. Dimensioning and tolerancing per ANSI Y 14.5-1982. 2. Dimension "D" does not include mold flash, protrusions or gate burrs. Mold Flash, protrusion or gate burrs shall not exceed 0.15mm (0.006 in)per side. 3. Dimension "E" does not include interlead flash protrusions. Interlead flash or protrusions shall not exceed 0.25 mm (0.010 in) per side. 4. The chamfer on the body is optional. It is not present, a visual index feature must be located within the crosshatched area. 5. "L" is the length of the terminal for soldering to a substrate. 6. "N" is the number of terminal position. (N=24) 7. The lead width "B" as measured 0.36 mm (0.014 in) or greater above the seating plane, shall not exceed a maximum value of 0.61mm (0.24 in). 8. Controlling dimension: MILLIMETER. 9. Refer to JEDEC MS-013, Variation AD. JEDEC is the trademark of JEDEC SOLID STATE TECHNOLOGY ASSOCIATION.
PT2396 V1.4
- 18 -
December, 2005

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