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TA8776N
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8776N
SURROUND PROCESSOR FOR A CTV
TA8776N is a surround processor controlled I2C bus. It incorporates following functions on a 30pin dual-in-line shrink-type plastic package.
FEATURES
Surround circuit
l Sumilated Surround l Hall Ambience l Dolby Surround (Input Terminal) l 3D Center Output (L + R) for a super woofer. l Surround Output (L - R) 2
Sound processor circuit
l Input Switch l Volume Adj. l Balance Adj l Surround Level Adj l Bass Adj. l Treble Adj. Weight: 1.99g (Typ.)
I C interface
l Filter Adj. by Bus line l DAC Output (2ch)
BLOCK DIAGRAM
000707EBA2
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc..
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TA8776N
TERMINAL FUNCTION
PIN No. NAME FUNCTION INTERFACE CIRCUIT
1 2 3 4
4 3 2 1
Terminals for capacitors of the phase shifter blocks. Value of phase shift in each block is [deg.] = -2tan
-1
(2fCR)
C is capacitance of external capacitor. R is resistance of internal register (10k (Typ.)).
5 6 7
Dolby In L In R In
Input terminals. "L In" is for L-ch signal. "R In" is for R-ch signal. "Dolby In" is for decoded Dolby Signal.
Terminal for tone control block. 8 Filter Adj. Cross-over frequency is set by sink current of this terminal. If 390k connect, cross-over frequency is about 1kHz.
9 10
TP (R) TP (L)
Terminals for capacitors for offset cancel circuits.
11 18
Bass Filter Treble Filter
Terminals for tone control block. Control current is smoothed by external capacitors.
000707EBA2
* The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. * The information contained herein is subject to change without notice.
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TA8776N
PIN No. NAME FUNCTION INTERFACE CIRCUIT
Input terminal for muting. 12 Mute Applied voltage more than 2V to this terminal, Muting is active.
13 14
L - R Filter L + R Filter
Terminals for level control blocks. Control current is smoothed by external capacitors.
15 16 17
VCC 12V VCC 9V GND (Analogue)
VCC (12V) VCC (9V) Gnd for Analogue

19 20 21 22
R Out. L Out. L - R Out. L + R Out. Output terminals.
23 24
DAC 1 DAC 2
Open collector switches controlled by I C bus.
2
Terminal for surround L.P.F. block. Cut-off frequency of the surround L.P.F. is set by external capacitor. 25 Sorround L.P.F.
fc = 1 Hz 2 F RC
R is registance of internal register (10k (Typ.)). C is capacitance of external capacitor.
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TA8776N
PIN No. NAME FUNCTION INTERFACE CIRCUIT
26
Balance Filter
Terminal for balance control block. Control current is smoothed by external capacitor.
Terminal for volume control block. 27 Volume Filter Control current is smoothed by external capacitor.
28
SDA
Terminal for SDA.
29
SCL
Terminal for SCL.
30
GND (Digital)
Gnd for Digital.
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TA8776N
I C BUS CONTROL
l Main Address 80 (h) : (h) = Hexa Decimal l Sub Address
2
Function-sub address reference table
FUNCTION BASS Treble Volume L-R L+R Balance Surround / DAC Input Mode Mute Filter Adjustment SUB ADDRESS 01 (h) 02 (h) 03 (h) 04 (h) 05 (h) 06 (h) 07 (h) 08 (h) 09 (h) 32 (h) 32 (h) 0 (h) 0 (h) 0 (h) 32 (h) F0 (h) 3 (h) 0 (h) POWER ON DEFAULT (Center) (Center) (Minimum) (Minimum) (Minimum) (Center) (Normal / DAC1, 2 L / Surr. Off) (L - R Mute, L + R Mute) (Minimum) 0~0F (h) 0~64 (h) EFFECTIVE DATA RANGE
Mode explanation (Input mode : normal)
MODE OFF MONO B1 STEREO A1 STEREO B1 DOLBY MONO B2 STEREO A2 STEREO B2 MONO B3 STEREO A3 STEREO B3 OUTPUT Lout L M - k (M) 4 L+k (L - R) L+k (L - R) 4 L M - (M) 4 L + (L-R) L + (L-R) 4 M L L Rout R M + k (M) 4 R - k (L - R) R - k (L - R) 4 R M + (M) 4 R - (L - R) R - (L - R) 4 M R R (L-R) out -k (M) 4 k (L - R) k (L - R) 4 k*D -k (M) 4 k (L - R) k (L - R) 4 -k (M) 4 k (L - R) k (L - R) 4 (L+R) out L+R M L+R L+R L+R M L+R L+R M L+R L+R
M D k () ( ) 4
: : : : :
Monoural Input Signal Dolby Surround Input Signal Co-efficient Phase Shifted Phase Shifted 4
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TA8776N
Data input mode reference table
[Sub Address : 07 (h)] DATA
MSB LSB
MODE Normal L R Reverse
OUTPUT Lout L L R R Rout R L R L x : Don't care
x x x x
x11xxxx x10xxxx x01xxxx x00xxxx
Data surround mode reference table
[Sub Address : 07 (h)] DATA
MSB LSB
MODE OFF MONO B1 STEREO A1 STEREO B1 DOLBY MONO B2 STEREO A2 STEREO B2 (OFF) MONO B3 STEREO A3 STEREO B3 (OFF) (OFF) (OFF) (OFF)
INTERNAL SWITCH SW 1 ON OFF ON ON ON OFF ON ON ON OFF ON ON ON ON ON ON SW 2 4 4 4 4 4 4 SW 3 1 2 2 2 3 2 2 2 1 2 2 2 1 1 1 1 SW 4 1 2 2 2 1 3 3 3 1 1 1 1 1 1 1 1 x : Don't care
x x x x x x x x x x x x x x x x
xxx0000 xxx0001 xxx0010 xxx0011 xxx0100 xxx0101 xxx0110 xxx0111 xxx1000 xxx1001 xxx1010 xxx1011 xxx1100 xxx1101 xxx1110 xxx1111
Data DAC output reference table
[Sub Address : 07 (h)] DATA
MSB LSB
Data mute mode reference table
[Sub Address : 08 (h)] DATA Mute 1
LSB
OUTPUT* DAC 1 H H L L x : Don't care * : Open Collector Output DAC 2 H L H L
MSB
Mute 2 (L - R, L + R) OFF ON ON ON x : Don't care
(L, R) OFF ON OFF ON
0 0 1 1
0xxxxxx 1xxxxxx 0xxxxxx 1xxxxxx
x x x x
xxxxx00 xxxxx01 xxxxx10 xxxxx11
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TA8776N
I C BUS CONTROLLED FORMAT SUMMARY
Bus controlled format of TA8776N is based on I2C Bus Control format of Philips.
2
Data transfer format
(1)
Start and stop condition
(2)
Bit transfer
(3)
Acknowledge
(4)
Slave address
Purchase of TOSHIBA I2C components conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips.
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TA8776N
MAXIMUM RATINGS (Ta = 25C)
CHARACTERISTIC Supply Voltage Power Dissipation Operating Temperature Storage Temperature SYMBOL VCC PDmax Topr Tstg RATING 15 1400 (Note 1) -20~65 -55~150 UNIT V mW C C
Note 1: Note 2:
When using the device at above Ta = 25C, decrease the power dissipation by 12.5mW for each increase of 1C. As this IC is weak in a surge voltage, handle it with care from being damage.
RECOMMENDED SUPPLY VOLTAGE
PIN No. 15 16 PIN NAME VCC 12V VCC 9V MIN 10.8 8.1 TYP. 12.0 9.0 MAX 13.2 9.9 UNIT V V
ELECTRICAL CHARACTERISTICS DC voltage characteristics (VCCPin15 = 12V, VCCPin16 = 9V, Ta = 25C)
PIN No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 18 19 20 21 22 23 24 25 26 27 4 3 2 1 DOLBY In L In R In Filter Adj. TP R TP L BASS Filter Mute L - R Filter L + R Filter Treble Filter R Out L Out L - R Out L + R Out DAC1 out (ON) DAC2 out (ON) Surround L.P.F. Balance Filter Volume Filter PIN NAME SYMBOL V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 V13 V14 V18 V19 V20 V21 V22 V23 V24 V25 V26 V27 MIN 3.9 3.9 3.9 3.9 3.9 3.9 3.9 1.4 3.7 3.7 3.9 3.6 3.6 3.9 4.5 4.5 4.5 4.5 TYP. 4.4 4.4 4.4 4.4 4.4 4.4 4.4 1.9 4.2 4.2 4.4 0.0 4.1 4.1 4.4 5.0 5.0 5.0 5.0 0.1 0.1 4.2 6.0 3.5 MAX 4.9 4.9 4.9 4.9 4.9 4.9 4.9 2.4 4.2 4.2 4.9 0.5 4.6 4.6 4.9 5.5 5.5 5.5 5.5 0.4 0.4 4.7 6.5 4.0 UNIT V V V V V V V V V V V V V V V V V V V V V V V V

3.7 5.5 3.0
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TA8776N
DC CURRENT CHARACTERISTICS (VCCPin15 = 12V, VCCPin16 = 9V, Ta = 25C)
PIN No. 15 16 PIN NAME VCC 12V VCC 9V SYMBOL I15 I16 MIN 8.0 22.0 TYP. 17.0 45.0 MAX 25.0 68.0 UNIT mA mA
AC CHARACTERISTICS
(Unless otherwise specified VCCpin15 = 12V, VCCpin16 = 9V, Ta = 25C)
CHARACTERISTIC SYMBOL L-ch R-ch Gain L-R Dolby L+R L-ch R-ch Total Harmonic Distortion THD L-R Dolby L+R L-ch R-ch S/N L-R Dolby L+R Surround Sound Phase L-ch Frequency Characteristics (100Hz) R-ch L-R Dolby L-ch Frequency Characteristics (10kHz) R-ch L-R Dolby L+R Balance (Center) Balance (Max.) L-ch R-ch L-ch R-ch F Max F Min (Note 7) (Note 8) (Note 6) -2.0 -13.0 -2.0 -7.0 -2.0 1.0 0 -11.0 0 -6.0 0 1.9 2.0 -9.0 2.0 -5.0 2.0 3.0 dB dB dB (Note 5) -2.0 0 2.0 dB (Note 4) -345 -300 -245 (Note 3) 55 60 dB (Note 2) 0.25 1.1 % 3.0 5.0 7.0 (Note 1) -2.0 0.0 2.0 TEST CIRCUIT TEST CONDITION MIN TYP. MAX UNIT
dB
Balance (Min.) Filter (Min.) Filter (Min.)

(Note 9) (Note 10) (Note 11)
1.3 0.4
-60 1.6 0.6
-50 1.9 0.8
dB kHz kHz
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TA8776N
CHARACTERISTIC SYMBOL L-ch R-ch L-ch R-ch L-ch R-ch L-ch R-ch TEST CIRCUIT TEST CONDITION (Note 12) MIN TYP. MAX UNIT
Treble (Max.)
5.0
8.0
10.0
dB
Treble (Min.)
(Note 13)
-10.0
-8.0
-5.0
dB
BASS (Max.)
(Note 14)
5.0
8.0
10.0
dB
BASS (Min.) Mute On Voltage

(Note 15) (Note 16)
-10.0 1.0 50
-8.0 1.4
-5.0 1.8
dB V
L-ch R-ch R-ch L-ch Crosstalk L-ch, R-ch Dolby Dolby L-ch Dolby R-ch Dynamic Range (1) L-ch R-ch L-ch R-ch L-ch R-ch L-R Dynamic Range (4) L+R Dolby Surround Switch Offset L-ch Mute DC Offset R-ch L-R L+R (Note 23) (Note 22) (Note 21) (Note 18) (Note 17)
dB 40
5.6
Vp-p
Dynamic Range (2)
(Note 19)
4.0
Vp-p
Dynamic Range (3)
(Note 20)
1.6 5.6 5.0 5.6

200
Vp-p
Vp-p
mV
600
mV
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TA8776N
TEST CONDITION
CONDITION NOTE CHARACTERISTICS L-ch R-ch 1 Gain L-R Dolby L+R L-ch R-ch 2 THD L-R Dolby L+R L-ch R-ch 3 S/N L-R Dolby L+R Cen Cen Max Max Max Cen Cen Cen Max Max Max Cen Cen Cen Max Max Max Cen Bass 01h Tre 02h Vol 03h
Lev 1 Lev 2
04h
05h
Bal 06h
Mode 07h Off Hall Dolby Off Hall Dolby Off Hall Dolby
Fil 09h
INPUT SIGNAL
MEASUREMENT METHOD
Min
1kHz, 500mVrms
20og vo / vi
Min
1kHz, 500mVrms
Measure THD.
60Hz, 500mVrms
Min
1kHz, 500mVrms
Ref. level : vo with no signal input
60Hz, 500mVrms Min 400Hz, 500mVrms vi-L - R
4
Surround Phase L-ch freq.Response [100Hz] R-ch L-R Dolby L+R L-ch freq.Response [10Hz] R-ch L-R Dolby L+R
Cen
Cen
Max
Max
Max
Cen
Hall Off
1kHz / Min 100Hz, 500mVrms
5
Cen
Cen
Max
Max
Max
Cen
Hall Dolby Off
Ref Pin 25
: vi (1kHz) : OPEN
1kHz / Min 10Hz, 500mVrms
Ref. Pin 25
:vo (1kHz) :5600pF to GND
6
Cen
Cen
Max
Max
Max
Cen
Hall Dolby
7
Balance Center L-ch R-ch L-ch R-ch
Cen
Cen
Max
Max
Max
Cen Min Max Max Min Cen
Off
Min
1kHz, 500mVrms 1kHz, 500mVrms 1kHz, 500mVrms 0.3~2kHz, 500mVrms 0.3~2kHz, 500mVrms
20log
Vout (L - ch) Vout (R - ch)
8
Balance [Max]
Cen
Cen
Max
Max
Max
Off
Min
Ref. : Bal Center
9
Balance [Min]
Cen
Cen
Max
Max
Max
Off
Min
Ref. : Bal Center Freq. vo becomes Max Freq. vo becomes Max
10
Filter [Min]
Min
Min
Max
Max
Max
Off
Max
11
Filter [Max]
Min
Min
Max
Max
Max
Cen
Off
Min
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TA8776N
CONDITION NOTE CHARACTERISTICS L-ch R-ch 13 Treble [Max] L-ch R-ch 14 Bass[Max] L-ch R-ch 15 Bass[Min] L-ch R-ch Min Cen Max Max Max Cen Off Min Max Cen Max Max Max Cen Off Min Cen Min Max Max Max Cen Off Min Bass 01h Cen Tre 02h Max Vol 03h Max
Lev 1 Lev 2
04h Max
05h Max
Bal 06h Cen
Mode
07h Off
Fil 09h Min
INPUT SIGNAL 1kHz / 10kHz, 500mVrms 1kHz / 10kHz, 500mVrms 1kHz / 100kHz, 500mVrms 1kHz / 100kHz, 500mVrms 1kHz / 500mVrms
MEASUREMENT METHOD Ref : vo (1kHz)
12
Treble [Min]
Treble: Center Ref : vo (1kHz)
Treble: Center Ref : vo (1kHz)
Bass : Center Ref : vo (1kHz)
Bass : Center
16
Mute On Voltage
Cen
Cen
Max
Max
Max
Cen
Off
Min
Ref
: L-ch input level
Mes : R-ch output level Ref Crosstalk L-ch R-ch R-ch L-ch 17 L, R-ch Dolby Min Cen Max Max Max Cen Off Min 1kHz / 500mVrms : R-ch input level
Mes : L-ch output level Ref : L-ch or R-ch input level
Dolby L-ch
Mes : L-R output level Ref : D input level
Dolby R-ch
Mes : L-ch output level Ref : D inptut level
Mes : R-ch output level D Range (1) 18 L-ch R-ch D Range (2) 19 L-ch R-ch D Range (3) 20 L-ch R-ch D Range (4) 21 L-R L+R Dolby Cen Cen Max Max Max Cen Max Max Max Max Max Cen Simulate Measure input level when THD = 3%. Max Max Max Max Max Cen Off Adj. 1kHz Measure input level when THD = 3%. Cen Cen Max Max Max Cen Off Adj. 1kHz Measure input level when THD = 3%.
Adj. 1kHz
Hall Dolby Adj. 1kHz Measure input level when THD = 3%.
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TA8776N
CONDITION NOTE CHARACTERISTICS Bass 01h Cen Tre 02h Cen Vol 03h Max
Lev 1 Lev 2
04h Max
05h Max
Bal 06h Cen
Mode
07h
Fil 09h
INPUT SIGNAL
MEASUREMENT METHOD Measure offset level between some surround mode and other surround mode Measure offset level between muting mode and normal mode
22
Surround SW Offset
Min AC GND
Mute DC 23
L-ch R-ch Cen Cen Max Max Max Cen
Off Hall Min AC GND
Offset
L-R L+R
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TA8776N
APPLICATION EXAMPLE CIRCUIT
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TA8776N
PACKAGE DIMENSIONS
Weight: 1.99g (Typ.)
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