Toshiba 29VH27D, Service Manual

Page: 23 / 158

18
67 I2CSEL IN X I
2
C Bus Address Select
68 ISGND SUPPLYA X Signal Ground for Analog Input, connect to GND
F
69 V
SUPF
SUPPLYA X Supply Voltage, Analog Front-End
70 VOUT OUT LV Analog Video Output
71 CIN IN LV Chroma/Analog Video 5 Input
72 VIN1 IN VRT Video 1 Analog Input
73 VIN2 IN VRT Video 2 Analog Input
74 VIN3 IN VRT Video 3 Analog Input
75 VIN4 IN VRT Video 4 Analog Input
76 V
SUPAI
SUPPLYA X Supply Voltage, Analog Component Inputs Front-End
77 GND
AI
SUPPLYA X Ground, Analog Component Inputs Front-End
78 VREF OUTPUT X Reference Voltage Top, Analog Component Inputs Front-
End
79 FB1IN IN VREF Fast Blank Input
80 AISGND SUPPLYA X Signal Ground for Analog Component Inputs, connect to
GND
AI
14.12.TDA1308T
14.12.1.General Description
The TDA1308 is an integrated class AB stereo headphone driver contained in an SO8 or a DIP8 plastic
package. The device is fabricated in a 1 mm CMOS process and has been primarily developed for
portable digital audio applications. It gets its input from two analog audio outputs (DACA_L and
DACA_R) of MSP3411G. The gain of the output is adjustable by the feedback resistor between the
inputs and outputs.
14.12.2.Features
• Wide temperature range
• No switch ON/OFF clicks
• Excellent power supply ripple rejection
• Low power consumption
• Short-circuit resistant
• High performance
• high signal-to-noise ratio
• High slew rate
• Low distortion
• Large output voltage swing.
14.12.3.Pinning
SYMBOL PIN DESCRIPTION
OUTA 1 Output A
INA(neg) 2 Inverting input A
INA(pos) 3 Non-inverting input A
V
SS
4 Negative supply
INB(pos) 5 Non-inverting input B
INB(neg) 6 Inverting input B
OUTB 7 Output B
V
DD
8 Positive supply
14.13.MSP34X1G (MSP3411G)
14.13.1.Description
The MSP 34x1G family of single-chip Mullet-standard Sound Processors covers the sound processing
of all analog TV -Standards worldwide, as well as the NICAM digital sound standards. The full TV sound
processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on
a single chip. Figure shows a simplified functional block diagram of the MSP34x1G. The MSP34x1G
has all functions of the MSP34x0G with the addition of a virtual surround sound feature. Surround
sound can be reproduced to a certain extent with two loudspeakers. The MSP34x1G includes our
virtualizer algorithm “3D-PANORAMA” which has been approved by the Dolby
1)
Laboratories for
compliance with the "Virtual Dolby Surround" technology. In addition, the MSP34x1G includes the