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TA8776
SURROUND PROCESSOR FOR A CTV
TOSHIBA TA8776N
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8776N
SURROUND PROCESSOR FOR A CTV
TA8776N is a surround processor controlled IZC bus. It
incorporates following functions on a 30pin dual-in-line
shrink-type plastic package.
FEATURES _-------",, _--rr,/, i. -
Surround circuit Sound processor circuit "/s _.---"", 111111111111U111111 .
It Sumilated Surround It Input Switch _ Tim?” 611111111111 T i 1 '
0 Hall Ambience It Volume Adj. V 9611; U 1
0 Dolby Surround (Input Terminal) It Balance Adj. 111“
0 3D Center Output (L+R) for o Surround Level Adj.
a super woofer 0 Bass Adj.
0 Surround Output (L-R) o Treble Adj. SDIP30-P-400-1.78
IZC interface Weight : 1.99g (Typ.)
0 Filter Adj. by Bus line
0 DAC Output (itch)
BLOCK DIAG RAM
LL u. u. I Cl TPLTPR
s",,.ir,,,itit?.,i(r if VCC9V a a r"-,
8 8 G g 8 FilterADJ. a _ _ Mute
' ' . . 0, + +
4 3 2 1 o a 1 9 1
L In L Out
Buffer
& Phase shift
R In R Out
D In Buffer
SDA Out
SCL IZL & D/A Converter
(dfghilth) 11 1 1 1 1 8
+ u. + u. + LL + LL + LL + u. _ so
1 1 d, d, d, u, DACI DAC2 vcc9v VCC12V GND1 a
l o l o I o I o l o l m Out Out UIF g
'- '- '- F F m- P
Bass L - R L + R Treble Balance Volume 0.027,.uF
L + R Out
980910EBA2
O TOSHIBA is continually working to improve the quality and the 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 observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product 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 products specifications. Also, please keep in mind the precautions and conditions set forth in the
TOSHIBA Semiconductor Reliability Handbook.
0 The products described in this document are subject to the foreign exchange and foreign trade laws.
0 The information contained herein is presented only as a guide for the ap Iications of our products. No responsibility is assumed by TOSHIBA
CORPORATION for any infringements of intellectual property or other rights 0 the third parties which may result from its use. No license is granted
b implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others.
0 T e information contained herein is subject to change without notice.
1999-03-12 1/15
TOSHIBA
TERMINAL FUNCTION
TA8776N
PIN No. NAME FUNCTION INTERFACE CIRCUIT
Terminals for capacitors of the Vcc(9V)
phase shifter blocks. Value of ---t l
1 954 . . .
phase shift In each block IS 1 7: 0c
2 953 -1 Te
3 2 fb [deg.] = -2tan (anCR) -
95 C is capacitance of external
4 /l . . .
capacitor. R IS resistance of 3
internal register (10kfy (Typ.)).
5 Dolby In Input tirminfls. L In IS for L-ch
6 L In signal. R In IS for R-ch signal.
"Dolby In" is for decoded Dolby
7 R In .
Signal.
. Vcc(9V):
Terminal for tone control block. Cl
Cross-over frequency is set by sink F
8 Filter Adj. current of this terminal. If 390kfl 100Q
connect, cross-over frequency is T s f,1,
about 1kHz. l? 2
Vccl I
(W) " 10m
9 TP (R) Terminals for capacitors for offset 10 mm;
10 TP(L) cancel circuits.
Vcc(9v) A
11 Bass Filter Terminals for tone control block. l coBnuts,a--C)
. Control current is smoothed by 194M
18 Treble Filter . 1 1009 < Cl MAM (5:
external capacitors. j, iii m
7" SC) C) >
1999-03-12 2/15
TOSHIBA
TA8776N
PIN No. NAME FUNCTION INTERFACE CIRCUIT
Vcc(9V te/F,
Input terminal for muting. 1r 5,"e'
12 Mute Applied voltage more than 2V to C21eeeye 1kQ
this terminal, Muting is active. 10091:)ng
Vcc(9V)
13 L-R Filter Terminals for level control blocks. gr CanLtSrol "’CD
. Control current is smoothed by
14 L+ R Filter .
external capacitors.
15 VCC 9V Vcc (9V)
16 VCC 12V VCC (12V)
17 GND(Ana|ogue) Gnd for Analogue
19 R Out.
20 L Out. .
21 L- R Out. Output terminals.
22 L+ R Out.
VC (9V)
23 DAC 1 Open collector switches controlled I
2 23 Chee
24 DAC 2 by I c bus. 24 3097:),
Terminal for surround L.P.F. block. mm
Cut-off frequency of the surround it
L.P.F. is set by external capacitor.
d L P F f 1 H ®‘WH7 1 m
25 Sorroun . . . c= 2rrRC z 1009
R is registance of internal register Tg +
(10kQ (Typ.)). C is capacitance of 4
external capacitor. J-
1999-03-1 2 3/15
TOSHIBA TA8776N
PIN No. NAME FUNCTION INTERFACE CIRCUIT
Vcc(9V)
Terminal for balance control block. 7: cot',),',',,, (D
26 Balance Filter Control current is smoothed by
external capacitor. A
156V25/1A
-—{‘—>
2.214)
Vcc (9V)
1: Bus
Control -
Terminal for volume control block. @w,
27 Volume Filter Control current is smoothed by 1009
external capacitor.
VCC (9V)
28 SDA Terminal for SDA.
7‘ . 0"
vc (9V)
(ii),-er-i(
29 SCL Terminal for SCL.
30 GND (Digital) Gnd for Digital.
1999-03-12 4/15
TOSHIBA
TA8776N
pc BUS CONTROL
0 Main Address 80 (h) : (h)=Hexa Decimal
o Sub Address
Function-sub address reference table
FUNCTION SUB ADDRESS POWER ON DEFAULT EFFECTIVE DATA RANGE
BASS 01 (h) 32 (h) (Center)
Treble 02 (h) 32 (h) (Center)
Volume 03 (h) 0 (h) (Minimum)
L-R 04 (h) o (h) (Minimum) 0--64 (h)
L+R 05 (h) 0 (h) (Minimum)
Balance 06 (h) 32 (h) (Center)
Surround/DAC 07 (h) F0 (h) (NormaI/DAC1, 2 L/Surr. -
Input Mode Off)
Mute 08 (h) 3 (h) (L-R Mute, L+R Mute) -
Filter Adjustment 09 (h) 0 (h) (Minimum) O--OF (h)
Mode explanation (Input mode : normal)
OUTPUT
MODE Lout Rout (L-R) out (L+R) out
OFF L R - L+R
MONO B1 M-k(M)4/ M+k(M)4¢ -k(M)4/ M
STEREO A1 L+k(L-R)p R-k(L-R)/ k(L-R)/ L+R
STEREO B1 L+k(L-R)4/ R-k(L-R)4p k(L-R)4/ L+R
DOLBY L R k.D L+R
MONO B2 M- (M)4/ M+ (M)4¢ -k(M)4/ M
STEREO A2 L+(L-R)/ R-(L-R)/ k(L-R)p L+R
STEREO B2 L+(L-R)4/ R-(L-R)4/ k(L-R)4/ L+R
MONO B3 M M -k(M)4/ M
STEREO A3 L R k(L-R) 9S L+R
STEREO B3 L R k(L-R)4/ L+R
M : Monoural Input Signal
D : Dolby Surround Input Signal
k : Co-efficient
() ff : Phase Shifted f)
()4¢ : Phase Shifted 4¢
1999-03-1 2 5/15
TOSHIBA
TA8776N
Data input mode reference table
Data DAC output reference table
[Sub Address : 07 (h)]
DATA OUTPUT
MSB LSB MODE Lout Rout
xx11xxxx Normal L R
x x 10 x x x x L L L
x x 01 x x x x R R R
xx00xxxx Reverse R L
x : Don't care
Data surround mode reference table
[Sub Address : 07 (h)]
DATA MODE INTERNAL SWITCH
MSB LSB SW 1 SW 2 SW 3 SW 4
xxxx0000OFF ON 95 1 1
xxxx0001MONOB1 OFF 4/ 2 2
xxxx001OSTEREOA1 ON ff 2 2
xxxx0011STEREOB1 ON 4/ 2 2
xxxx0100DOLBY ON f! 3 1
xxxx0101MONOB2 OFF 4/ 2 3
xxxx011OSTEREOA2 ON f) 2 3
xxxx0111STEREOB2 ON 4/ 2 3
xxxx1000(OFF) ON f) 1 1
xxxx1001MONOB3 OFF 4/ 2 1
xxxx101OSTEREOA3 ON 56 2 1
xxxx1011STEREOB3 ON 4315 2 1
xxxx1100(OFF) ON ff 1 1
xxxx1101(OFF) ON fd 1 1
xxxx1110(OFF) ON , 1 1
xxxx1111(OFF) ON f! 1 1
x : Don't care
Data mute mode reference table
: Open Collector Output
[Sub Address : 07 (h)] [Sub Address : 08 (h)]
DATA OUTPUT* DATA Mute 1 Mute 2
MSB LSB DAC1 DAC2 MSB LSB (L, R) (L-R, L+R)
OOxxxxxx H H xxxxxx00 OFF OFF
01xxxxxx H L xxxxxx01 ON ON
10xxxxxx L H xxxxxx10 OFF ON
11xxxxxx L L xxxxxx11 ON ON
x .' Don't care Don't care
1999-03-1 2 6/15
TOSHIBA TA8776N
pc BUS CONTROLLED FORMAT SUMMARY
Bus controlled format of TA8776N is based on " Bus Control format of Philips.
Data transfer format
S : Start Condition
S Slave address 0 A Sub address A Data A P
P : Stop Condition
t 7bit 1 8bit t 8bit A . A kn led
M58 M58 MSB . C owe ge
(1) Start and stop condition (2) Bit transfer
_ r---,
I I I I I I I I
I . . . I
I l I I I I I I
SDA l l } , S l I l SDA I l l x l l l
l I . . . . I l i I I i
I I I I I I I I
I I . I I I I I I
I I I l i i l
SCL 'I_§_I I_E_I SCL I I I t
Start Condition I . . . Stop Condition
SDA cannot change
SDA can change
(3) Acknowledge (4) Slave address
from Master
I . . .
SDA l N l I Wdance A6 A5 A4 A3 A2 A1 A0 WW
I . . . .
l I 1 0 0 0 0 0 0 0
from Slave .
SDA High Impedance
from Master
L____ ________
Purchase of TOSHIBA " components conveys a license under the Philips IZC Patent Rights to
use these components in an " system, provided that the system conforms to the "
Standard Specification as defined by Philips.
1999-03-12 7/15
TOSHIBA
TA8776N
MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VCC 15 V
Power Dissipation PDmax 1400 (Note I) mW
Operating Temperature Top, -20--65 "C
Storage Temperature Tstg - 55--150 "C
(Note 1) When using the device at above Ta =25°C, decrease the power dissipation by
12.5mW for each increase of 1°C.
(Note 2) As this IC is weak in a surge voltage, handle it with care from being damage.
RECOMMENDED SUPPLY VOLTAGE
PIN No. PIN NAME MIN. TYP. MAX. UNIT
15 vcc12v 10.8 12.0 13.2 v
16 VCC 9V 8.1 9.0 9.9 v
ELECTRICAL CHARACTERISTICS
DC voltage characteristics (VCCPin15 =12V, Vccpin16 = 9V, Ta = 25°C)
PIN No. PIN NAME SYMBOL MIN. TYP. MAX. UNIT
1 954 V1 3.9 4.4 4.9 V
2 /3 V2 3.9 4.4 4.9 V
3 992 V3 3.9 4.4 4.9 V
4 /l V4 3.9 4.4 4.9 V
5 DOLBY In V5 3.9 4.4 4.9 V
6 L In V6 3.9 4.4 4.9 V
7 R In V7 3.9 4.4 4.9 V
8 Filter Adj. V8 1.4 1.9 2.4 V
9 TP R V9 3.7 4.2 4.2 V
10 TP L V10 3.7 4.2 4.2 V
11 BASS Filter V11 3.9 4.4 4.9 V
12 Mute V12 - 0.0 0.5 V
13 L- R Filter V13 3.6 4.1 4.6 V
14 L+ R Filter V14 3.6 4.1 4.6 V
18 Treble Filter V18 3.9 4.4 4.9 V
19 R Out V19 4.5 5.0 5.5 V
20 L Out V20 4.5 5.0 5.5 V
21 L- R Out V21 4.5 5.0 5.5 V
22 L+ R Out V22 4.5 5.0 5.5 V
23 DAC1 out (ON) V23 - 0.1 0.4 V
24 DAC2 out (ON) V24 - 0.1 0.4 V
25 Surround L.P.F. V25 3.7 4.2 4.7 V
26 Balance Filter V26 5.5 6.0 6.5 V
27 Volume Filter V27 3.0 3.5 4.0 V
1999-03-1 2 8/15
TOSHIBA
TA8776N
DC CURRENT CHARACTERISTICS (Vccpin15 = 12V, Vccpin16 = 9v, Ta = 25°C)
PIN No. PIN NAME SYMBOL MIN. TYP. MAX. UNIT
15 VCC 12V I15 8.0 17.0 25.0 mA
16 VCC 9V I16 22.0 45.0 68.0 mA
Ac CHARACTERISTICS (Unless otherwise specified vccpin15 =12V, 1/ccpin16=9V, Ta =25°C)
TEST TEST
CHARACTERISTIC SYMBOL CIR- MIN. TYP. MAX. UNIT
CUIT CONDITION
R-ch 2.0
-2.0 0.0
Gain L-R - (Note 1) dB
L+R 3.0 5.0 7.0
TotalH icDistorti R-ch
o a armonlc IS o Ion L-R - (Note 2) - 0.25 1.1 %
S/N L-R - (Note 3) 55 60 - dB
Surround Sound Phase - (Note 4) -345 -300 -245 o
Frequency Characteristics R-ch -
(100Hz) L-R (Note 5) 2.0 0 2.0 dB
:2: -2.0 o 2.0
Frequency charact'r1slltz) L-R - (Note 6) -13.0 -11.0 -9.0 dB
Dolby -2.0 o 2.0
L+R -7.0 -6.0 -5.0
Balance (Center) - (Note 7) -2.0 0 2.0 dB
Balance (Max.) 2t - (Note 8) 1.0 1.9 3.0 dB
. L-ch
Balance (Min.) R-ch - (Note 9) - -60 -50 dB
Filter (Min.) F Max - (Note 10) 1.3 1.6 1.9 kHz
Filter (Min.) F Min - (Note 11) 0.4 0.6 0.8 kHz
1999-03-1 2 9/15
TOSHIBA TA8776N
TEST TEST
CHARACTERISTIC SYMBOL CIR- MIN. TYP. MAX. UNIT
CUIT CONDITION
Treble (Max.) R-ch - (Note 12) 5.0 8.0 10.0 dB
. L-ch
Treble (Min.) R-ch - (Note 13) -10.0 -8.0 -5.0 dB
BASS (Max.) R-ch - (Note 14) 5.0 8.0 10.0 dB
. L-ch
BASS (Min.) R-ch - (Note 15) -10.0 -8.0 -5.0 dB
Mute On Voltage - (Note 16) 1.0 1.4 1.8 V
L-ch - R-ch 50
R-ch -9 L-ch - -
Crosstalk L-ch, R-ch-aDolby - (Note 17) dB
Dolby-aL-ch 40 - -
Dolby-sit-ch
. L-ch
Dynamic Range (1) R-ch - (Note 18) 5.6 - - Vp-p
D . R (2) L-ch (N t 19) 4.0 v
ynamlc ange R-ch - oe . - - p-p
. L-ch
Dynamic Range (3) R-ch - (Note 20) 1.6 - - Vp-p
L-R 5.6 - -
Dynamic Range (4) L+R - (Note 21) 5.0 - - Vp-p
Dolby 5.6 - -
Surround Switch Offset - (Note 22) - - 200 mV
Mute DC Offset L-R - (Note 23) - - 600 mV
1999-03-1 2 10/15
TOSHIBA TA8776N
TEST CONDITION
CONDITION INPUT MEASUREMENT
NOTE CHARACTERISTICS Bass Tre Vol Lev1 Lev2 Bal Mode Fil SIGNAL METHOD
01h 02h 03h 04h 05h 06h 07h 09h
L-ch Off
R-ch 1kHz
1 Gain L-R Cen Cen Max Max Max Cen Hall Min 500le 20€og vo/vi
Dolby Dolby rms
R-ch 1kHz,
2 THD L-R Cen Cen Max Max Max Cen Hall Min 500mVrms Measure THD.
Dolby Dolby
L+R 60HZ.
- 500mVrmS
R-ch 1kHz, R f I I .
S/N L-R Hall . 500mVrms er. f." . .
3 Cen Cen Max Max Max Cen Min vo with no signal
Dolby Dolby in ut
L+R 60Hz, p
500mvrms
. 400Hz, .
4 Surround Phase Cen Cen Max Max Max Cen Hall Min vi-L-R
500mvrms
f 2) Off 1kH /
req. -c z . .
5 Response L-R Cen Cen Max Max Max Cen Hall Min 100Hz, 2:25: li/l,?")
[100Hz] Dolby Dolby 500mVrms .
L-ch Off
freq R-ch 1kHz/ Ref. : vo (1kHz)
6 Response L-R Cen Cen Max Max Max Cen Hall Min 10kHz, Pin 25: 5600pF to
[10kHz] Dolby Dolby 500mvrms GND
. 1kHZ. VoutgL-ch)
7 Balance Center Cen Cen Max Max Max Cen Off Min 500mVrmS 20tog Vout(R-ch)
Balance L-ch Min . 1kHz, .
8 [Max] R-ch Cen Cen Max Max Max Max Off Min 500mVrms Ref. . Bal Center
Balance L-ch Max . 1kHz
M M M ff M ' R f. : B I
9 [Min] R-ch Cen Cen ax ax ax Min 0 In 500mVrms e a Center
. . . . 0.3--2kHz, Freq.
10 Filter [Min] Min Min Max Max Max Cen Off Max 500mVrms vo becomes Max
. . . . 0.3--2kHz, Freq.
11 Filter [Max] Min Min Max Max Max Cen Off Min 500mVrms vo becomes Max
1999-03-12 11/15
TOSHIBA TA8776N
CONDITION
NOTE CHARACTERISTICS B T Vol L 1L 2 Bal M de FII INPUT MEASUREMENT
ass re o ev ev o SIGNAL METHOD
01h 02h 03h 04h 05h 06h 07h 09h
Treble L-ch . Ref : vo (1kHz)
12 [Min] R-ch Cen Max Max Max Max Cen Off Min 10kHz, Treble : Center
500mvrms
Treble L-ch . . Ref. : vo (1kHz)
13 [Max] R-ch Cen Min Max Max Max Cen Off Min 10kHz, Treble : Center
500mVrms
- R f. : 1kH
14 Bass Wax] L-ch Max Cen Max Max Max Cen Off Min 100Hz, e _"°( z)
R-ch Bass :Center
500mvrms
. - . : 1kH
15 Bass [Min] L-ch Min Cen Max Max Max Cen Off Min 1OOHz, Ref _"°( z)
R-ch Bass :Center
500mVrmS
Mute On . 1kHz/
16 Voltage Cen Cen Max Max Max Cen Off Min 500mVrms
Ref: L-ch input level
Mes: R-ch output
Ref: R-ch input
Crosstalk
L-ch-YR-ch Mes reseloutput
L r: -ftt, 1kHz/ Ref: L-ch or R-ch
17 ' -c o y Min Cen Max Max Max Cen Off Min 500mV inputlevel
rms Mes: L-R output
Dolby -9 L-ch level
Ref: D input level
Dolby-OR-ch Mes: L-ch output
Ref: D inptut level
Mes: R-ch output
D Range (1) Measure in ut level
18 L-ch Cen Cen Max Max Max Cen Off Adj. 1kHz when THD:3%
R-ch .
D Range (2) M a re in t Ie el
19 L-ch Max Max Max Max Max Cen Off Adj. 1kHz (1J,Cl"f)g'="3",,, V
R-ch .
D Range (3) . .
Simu- . Measure input level
20 L-ch Max Max Max Max Max Cen late Adj. 1kHz when THD=3%.
D Range (4) Hall
L-R . Measure input level
21 L+R Cen Cen Max Max Max Cen - Adj. 1kHz when THD=3%.
Dolby Dolby
TOSHIBA TA8776N
CONDITION INPUT MEASUREMENT
NOTE CHARACTERISTICS Bass Tre Vol Lev1 Lev2 Bal Mode Fil SIGNAL METHOD
01h 02h 03h 04h 05h 06h 07h 09h
Measure offset level
Surround SW between some
22 Cen Cen Max Max Max Cen - Min AC GND surround mode and
Offset
other surround
Mute DC L-ch Measure offset level
Off t R h Off b t ti
23 se -c Cen Cen Max Max Max Cen Min AC GND etween mu mg
L-R Hall mode and normal
L+R - mode
1999-03-1 2 13/15
TOSHIBA
TA8776N
APPLICATION EXAM PLE CIRCUIT
it I - g) t GND
" 0.03936 30 (digital)
" ic-Yee D-oscc Pc bus
(h01ptF
" -yf-.fi? D-osoa
0039/5
1¢ -.ur-Kii) (ir-+P-tt Volume
0.039% 33/1"
Dolby ln o---i2 @LILE Balance
22m: 10prF
L In o-i-e Cisler.-.t Surround L.P.F.
li: 0.0056/1F
R In o-t-C 24 DAC2 Out
2.2m T A 8 7 7 6 N
Filter Adj.
''''"""'ey.t-.,(ii; 23 DAC1 Out
L+R Out
I ______________ _I
L-Rout I 1;
D-oLout c;
D-OR Out
L-R - + 13 "ysJ-+_a--t: - Treble
10M: 10/1F
L+R - + 14 D-tGNDeuwogue)
1999-03-12 14/15
m :m— N _‘-mo-mmm_‘
2E mam; ” 2925
8'0¢0'8
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$2.355 mz_.:.:o
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www.ic-phoenix.com
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