Sony STR-DB840 Service Manual page 55

• DIGITAL BOARD IC1503 AK4527 (A/D, D/A CONVERTER)
Pin No. Pin Name
SDOS
1
2 I2C
3 SMUTE
4 BCLK
5 LRCK
6 SDT1
7 SDT2
8 SDT3
9 SDTO
10 DAUX
DFS
11
DEM1, DEM0
12, 13
TVDD
14
D5V
15
DGND
16
PD
17
18 ICKS2
ICKS1
19
ICKS0
20
CAD1
21
22 CAD0
LOUT3
23
ROUT3
24
25 LOUT2
ROUT2
26
LOUT1
27
ROUT1
28
29 LIN–
LIN+
30
RIN–
31
32 RIN+
DZF2
33
VCOM
34
VREFH
35
A5V
36
37 AGND
DZF1
38
MCLKI
39
S/P
40
CS
41
CCLK
42
CDTI
43
44 LOOP1
I/O
I
Data source select terminal "L": internal ADC output "H": DAUX input
I
Control mode select terminal "L": 3-wire serial "H": I2C bus
I
Soft mute signal input from the system controller (IC1201)
I
Audio serial data clock signal input from the digital audio interface receiver (IC1101)
I Input channel clock signal input from the digital audio interface receiver (IC1101)
I
DAC1 audio serial data input from the audio DSP (IC1401)
I
DAC2 audio serial data input from the audio DSP (IC1401)
I
DAC3 audio serial data input from the audio DSP (IC1401)
O audio serial data output to the dolby digital audio decoder (IC1301)
I
Audio serial data input terminal Not used (fixed at "L")
Double speed sampling mode signal input from the system controller (IC1201)
I
"L": normal speed "H": double speed
I
De-emphasis signal input terminal Not used (fixed at "L")
—
Power supply terminal (+5V) (for output buffer )
—
Power supply terminal (+5V) (digital system)
—
Ground terminal (digital system)
I
Power down and reset signal input terminal "L": power down and reset
I Clock select 2 input terminal (fixed at "L" in this set)
I
Clock select 1 input terminal (fixed at "H" in this set)
I
Clock select 0 input terminal (fixed at "H" in this set)
I
Chip address 1 input terminal Used during the serial control mode (fixed at "L" in this set)
I Chip address 0 input terminal Used during the serial control mode (fixed at "L" in this set)
O
L-ch 3 analog output to the select switch (IC1502)
O
R-ch 3 analog output to the select switch (IC1502)
O L-ch 2 analog output to the select switch (IC1502)
O
R-ch 2 analog output to the select switch (IC1502)
O
L-ch 1 analog output to the select switch (IC1502)
O
R-ch 1 analog output to the select switch (IC1502)
I L-ch analog negative input from the line amp (IC1504)
I
L-ch analog positive input from the line amp (IC1504)
I
R-ch analog negative input from the line amp (IC1504)
I R-ch analog positive input from the line amp (IC1504)
O
Zero input detect 2 terminal
Common voltage output terminal
O
Large external capacitor is used to reduce power supply noise
I
Positive voltage reference input terminal (+5V)
—
Power supply terminal (+5V) (analog system)
— Ground terminal (analog system)
O
Zero input detect 1 terminal
I
Master clock input from the digital audio interface receiver (IC1101)
I
Parallel or serial select terminal "L": serial control mode (fixed at "L" in this set)
I
Chip select signal input from the system controller (IC1201)
I
Clock signal input from the system controller (IC1201)
I
Control signal output to the system controller (IC1201)
O Loop back mode 1 signal output terminal (fixed at "L" in this set)
Description
Not used (open)
Not used (open)
55