Sony STR-DB780 Service Manual

52
STR-DA1ES/DB780
• DIGITAL BOARD IC1601 MB90478PFV-G-123-BND (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O Description
1 DATA0
I
Audio serial data input from the digital audio interface receiver
2 GP9
I
Audio signal input from the audio digital signal processor
3 BST
O
Boot strap signal output to the audio digital signal processor
4 HCS
O
Chip select signal output to the audio digital signal processor
5HACN
I
Acknowledge signal input from the audio digital signal processor
6XRST
O
System reset signal output to the audio digital signal processor “L”: reset
7PM
O
PLL initialize signal output to the audio digital signal processor
8PD
O
Power down signal output to the A/D, D/A converter “L”: power down
9SMUTE
O
Soft muting on/off control signal output “L”: muting on
10 CDT1
O
Serial data output to the A/D, D/A converter
11
VSS
—
Ground terminal
12 SCL
O
Serial data transfer clock signal output to the A/D, D/A converter
13 CS
O
Chip select signal output to the A/D, D/A converter
14 DATA
O
Serial data output to the tuner unit, function switch and electrical volume
15 CLK
O
Serial data transfer clock signal output to the tuner unit, function switch and electrical volume
16 LATCH
O
Serial data latch pulse signal output to the function switch and electrical volume
17
NC
O
Relay drive signal output terminal (for surround back speaker) “H”: relay on
18 HDOUT
I
Serial data input from the audio digital signal processor
19 HDIN
O
Serial data output to the audio digital signal processor
20 HCLK
O
Serial data transfer clock signal output to the audio digital signal processor
21 F.MUTE
O
System muting on/off control signal output “L”: muting on
22 2ND VOL LAT
O
Serial data latch pulse signal output terminal Not used
23
VCC5
—
Power supply terminal (+3.3V)
24 ANA/DIG
O
Analog/digital selection signal output “L”: analog, “H”: digital
25 HP DETECT
I
Headphone detection signal input “H”: headphone is connected
26 DCS LED
O
LED drive signal output of the DIGITAL CINEMA SOUND indicator “H”: LED on
27
FLASH2
O
Flash programming signal output
28
SP SWITCH/
FLASH1
I/O
Speaker on/off switch input terminal “L”: speaker on
Flash programming signal output
29 INPUT LED
O
LED drive signal output of the INPUT MODE indicator “H”: LED on
30 MULTI LED
O
LED drive signal output of the MULTI CH DIRECT indicator “H”: LED on
31 2CH LED
O
LED drive signal output of the 2CH ST indicator “H”: LED on
32 AFD LED
O
LED drive signal output of the AUTO DEC. indicator “H”: LED on
33 SCL
O
Serial data transfer clock signal output to the EEPROM
34 SDA
I/O
Two-way data bus with the EEPROM
35 AVCC
—
Power supply terminal (+3.3V) (for analog)
36 AVRH
I
Reference voltage (+3.3V) input terminal
37 AVSS
—
Ground terminal (for analog)
38 to 41
A/D0to A/D3
I
Key input terminal (A/D input)
42 VSS
—
Ground terminal
43 RDS SIGNAL
I
RDS signal input from the tuner unit (STR-DB780: AEP and UK models only)
44 MODEL
I
Model setting terminal
45 VERSION
I
Version setting terminal
46 FUN LAT SW
O
Serial data latch pulse signal selection signal output
“L”: for electrical volume, “H”: for function switch

Sony STR-DB780 Specifications

General

Type	Stereo Receiver
Total Harmonic Distortion	0.09 %
Digital inputs	2 Optical, 1 Coaxial
Weight	10.5 kg
Video inputs	composite
Video outputs	1 composite, 1 S-Video
Output Power	100 Watts (8 Ohms, 20 Hz - 20 kHz, 0.09% THD)
Signal-to-Noise Ratio	96 dB (Line in)
Input Sensitivity	150 mV (Line in)