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TA8777BN
AV SWITCH FOR COLOR TV
TOSHIBA TA8777BN
TENTATIVE TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8777BN
AV SWITCH FOR COLOR TV
TA8777BN is a switching IC comprising two audio (R/L)
and a video circuit and is offered in a shrink 36-pin
plastic package.
The inputs for all the three audio/video circuits can be
simultaneously switched among a TV input channel and
for external input channels. Tow of the four external
input channels are compatible with S-terminals.
TA8777BN is controlled via the FIC Bus.
FEATURES SDIP36-P-500-1.78
Weight : 2.98g (Typ.)
0 Audio Two circuits (L/R)
Inputs : 1-channel TV input
4-channel external input
Outputs : L/R output
0 Video One circuit
Inputs : 1-channel TV input
4-channel external input
Outputs : Monitor output
Y/C output
It Audio mute function
It Can be used with a comb filter.
1 2001-06-25
TOSHIBA
TA8777BN
BLOCK DIAGRAM
Vtv Input 36 D GNDI
(analog)
Ve1 Input Ci Cii) Monitor Output
Ve2 Input Ci (ij) Clamp
Ys1 Input
(Ve3) Ci? Ci)) Y Output
Ys2 Input c-o 2 Ci)) Y2 Input
Csl Input (2 @w Input
5-2 SW
C52 Input (ii) 5 D C Output
Ltv Input (iii r'"-,, C Input
'ss SW
LeI Input (iii MuteI O 8 G) TV L Output
SW6 I K SW
Le2 Input Ci-o 1-3 l MuteI o C) TV R Output
L51 Input CD-o o l D Audio L Output
5.4 Mute2 I
L52 Input G) I D Audio R Output
Rtv Input (iii ' l Cis)) VZCCH
I (l C)
Re1 Input Ci)-""' I @Address
Re2 Input Ci ol-? D SDA
Pc Transceiver
RsI Input c- O D SCL
6-4 Mute?
Rs2 Input (iD Ci) Mute
Vcc1 C)
(analog)
ED GNDII
TOSHIBA TA8777BN
TERMINAL CONNECTION DIAGRAM
Vcc1 C Ds Vtv
(analog)
_ Isl Q: Cis) Ltv TV Input
Ys1 C) (ii) Rtv
Rs1 C Ci)) SDA
. Csl Cs? D SCL
f L52 (i2 D GNDII
SI Input "
Ys2 Ci) Monitor Output
S2 Input "
R52 Ci) Ci) Vccn
k. C52 Ci) ii) Y2 Input
r" Le1 Cii @aamp
El Input " Re1 Ci Dc Input
. Ve1 Ci D Mute
_ Le2 Ci g) Y1 Input
TA8777BN
E2 Input " Re2 Ci) D Audio L Output
g Ve2 (iii D Audio R Output
TV L Output (i? D C Output
TV R Output Ci C(o) GND I
(analog)
Address Cii Ci) Y Output
3 2001-06-25
TOSHIBA TA8777BN
IZC Bus Slave Address
Voltage on Pin (V) Address
0.0--1.5 10010000
1.5--4.5 10010110
4.5--7.5 10010100
7.5--9.0 10010010
Data Transfer Format
I I I l I I I I I I I I I I I I I I I I
S Slave Address 0 A DATAI A DATAII A P
I I I l I I l I I I I I I I I I I l I I
Bus Control Function
DATAI DATAII
|IB7| IBG| IBS| IB4| IB3| 132| IB1| 130| I - l - I - |IIB4|IIB3|IIBZ|IIBI|IIBO|
Preset to ( 00001111 , when power-on Preset to ( XXX00011 ) when power-on
(X = Don't care)
Mode Setting ( I B7, I B6, I B5, I B4) Video Gain (IIB2, IIBI, I130]
I B7 I B6 I B5 I B4 Pin5 Pin9 Mode Setting II B2 11 B1 II BO Gain
0 0 0 O X yd. TV 0 0 O 2.9dB
0 0 0 1 .)i(. X E1 0 0 1 4.1dB
0 0 1 0 X X E2 0 1 0 5.1dB
0 0 1 1 X X E3 0 1 1 6.0dB
0 1 0 O X yd. E4 1 0 O 6.8dB
L . E3 1 0 1 7.6dB
0 1 0 1 Open X SI 1 1 0 8.3dB
L E4 1 1 1 8.9dB
0 1 1 o X Open S2
0 1 1 1 X )k. TV1
1 0 0 O yd. X TV2
1 0 0 1
, )r.1( X TV
1 l 1 l 1 l 1
(Note 1) When I B7~ I B4 are set for S1 Mode and S2 Mode, if a voltage not exceeding
1V is applied to the chrome input pin, the mode becomes E3 Mode and E4
Mode, respectively.
(Note 2) When the values of I B7~I B4 are within 1001--1111, TV Mode will be
selected.
(Note 3) X =Don't care.
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TOSHIBA TA8777BN
System Setting ( I 33-1 Bit)
I B3 System Setting I B2 System Setting
0 4.43MHz 0 Black and white
1 3.58MHz 1 Color
Comb Filter ( II B4)
II B4 Comb Filter
Mute On/Off( IB1-I BO)
I BO Mute I I B1 MuteII
0 Off 0 Off
1 On 1 On
Modes and Outputs
Mode II B3 Switch Select Monitor Output Y Output C Output L Output R Output
0 1-1, 2-M, 3-M, 6-1 Ltv Rtv
TV 1 1-1, 2-M, 3-M, 6-4 I/tv L51 Rsl
E1 X 1-2, 2-M, 3-M Ve1 See No.1 Le1 Re1
E2 >:< 1-3, 2-M, 3-M Ve2 (on next page.) Le2 Re2
E3 X 1-4, 2-1, 3-M, 6-4 Ys1 LS1 RS1
E4 yd. 1-4, 2-2, 3-M Ys2 L52 Rs2
S1 X 1-5, 2-1, 3-1, 4-2, 5-2, 6-4 Ys1+Cs1 Ys1 Cs1 Ls1 R51
S2 X 1-5, 2-2, 3-2, 4-2, 5-2 Ys2 +Cs2 Ysit C52 L52 Rs2
TV1 0 1-4, 2-1, 3-1, 6-4 Ys1 See No.2 LS1 R51
1 1-4, 2-1, 3-1, 6-1 (on next page.) Ltv Rtv
TV2 X 1-4, 2-2, 3-2 Ys2 L52 Rs2
(Note) : X =Don't care.
5 2001-06-25
TOSHIBA TA8777BN
. Y Output C Output
I B3 I B2 IIB4 Switch Select TV E1 E2 E3 E4 TV E1 E2 E3 E4
0 4-1, 5-1 Vtv Ve1 Ve2 Ys1 Ys2 Vtv Ve1 Ve2 Ys1 Ys2
0 1 4-3, 5-3 Y1 Input C Input
0 1 o 4-4, 5-1 Y2 Input Vtv l Ve1 l Ve2 I Ys1 l Ys2
1 4-3, 5-3 Y1 Input c Input
0 0 4-1, 5-1 Vtv l Ve1 I Ve2 l Ys1 I Ys2 Vtv l Ve1 l Ve2 l Ys1 I Ys2
1 1 4-3, 5-3 Y1 Input C Input
1 o 4-4, 5-1 Y1 Input Vtv l Ve1 l Ve2 l Ys1 l "fs2
1 4-3, 5-3 Y1 Input C Input
Y Output C Output
I B3 I B2 II B4 Swutch Select TV1 TV2 TV1 TV2
o 4-2, 5-2 Ys1 Ys2 Cs1 C52
0 1 4-2, 5-2 Ys1 Ysil Cs1 Csil
0 1 0 4-4, 5-2 Y2 Input Cs1 C52
1 4-3, 5-3 Y1 Input C Input
0 4-2, 5-2 Ys1 Ys2 C51 C52
0 1 4-2, 5-2 Ys1 Ysil C51 C52
1 1 o 4-4, 5-2 Y1 Input Cs1 C52
1 4-3, 5-3 Y1 Input C Input
6 2001-06-25
TOSHIBA TA8777BN
PACKAGE DIMENSIONS
SDlP36-P-500-1.78 Unit : mm
36 a m
11.111133333333333] urlnll.
i)) m 5
uJclctL.dl.-lctclciclL.-lt.,uu.lc3ctclclclLL Ir 2.
l 18 ID
33.3MAX y
- 32.8k0.2 "
i: .vn
n I 1 a m m
'i'??"'-'???????? |S- 4 15'P,.
c M "e?
1-287TYP. A u A t. Jnd:thl v nohmlo.‘ g
Weight : 2.98g (Typ.)
7 2001-06-25
TOSHIBA TA8777BN
RESTRICTIONS ON PRODUCT USE
000707EBA
OTOSHIBA 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..
OThe 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.
0 The products described in this document are subject to the foreign exchange and foreign trade
OThe 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.
0 The information contained herein is subject to change without notice.
8 2001-06-25
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