Sony SLV-7700KME, Service Manual

Page: 94 / 135

6-14E
6-13. KARAOKE/DIGIT
AL
SOUND PROCESSOR PORT FUNCTION DESCRIPTION (MB-77 BOARD IC501 CXD2720Q)
Pin No.
Pin Name
I/O
Function
1
A
VS0
–
Digital GND for DRAM.
2
VSS0
–
GND for digital system.
3
R
VDT
I
Micr
ocomputer interf
ace da
ta input.
4
SCK
I
Micr
ocomputer interf
ace shift c
lock input.
5
XLA
T
I
Micr
ocomputer interf
ace la
tch input.
6
RED
Y
O
Micr
ocomputer interf
ace tr
ansmit permission signal output.
7
TRDT
O
Micr
ocomputer interf
ace ser
ial da
ta output. Nor
mally “H”.
8
X
WO
I
W
indo
w open input f
or synchr
oniza
tion.
9
XRST
I
System reset input terminal. “L” : reset.
10
VSS1
–
GND for digital system.
11
VDD0
–
+5V for digital system.
12
SO
O
Serial data output with one sampling f
or tw
o c
hannels.
13
XS24
I
Serial data 24 or 32 bit slot select. “L” to select 24 bit slot. (v
alid in sla
v
e mode)
14 – 19
TST0 –
TST5
I
T
est terminal. Normall
y f
ix
ed to
“L
”.
20
VSS2
–
GND for digital system.
21
A
VS3
–
GND ter
minal f
or c
h-3
A/D con
ver
ter
.
22
AIN3
I
Analo
g input terminal f
or c
h-3
A/D con
ver
ter
. (for MIC)
23
A
VD3
–
VDD ter
minal f
or c
h-3
A/D con
ver
ter
.
24
A
VD4
–
VDD ter
minal f
or c
h-1 D/A con
v
er
ter
.
25
A
O1P
O
CH-1 D/A con
ver
ter analo
g nor
mal phase output.
26
A
O1N
O
CH-1 D/A con
ver
ter analo
g opposite phase output.
27
A
VS4
–
GND ter
minal f
or c
h-1 D/A con
v
er
ter
.
28
A
VS1
–
GND ter
minal f
or c
h-1
A/D con
ver
ter
.
29
AIN1
I
Analo
g input terminal f
or c
h-1
A/D con
ver
ter
.
30
A
VD1
–
VDD ter
minal f
or c
h-1
A/D con
ver
ter
.
31
XVDD
–
Dig
ital
VDD f
or master c
lock.
32
XTLO
O
System clock. (33.8688 MHz)
33
XTLI
I
34
XVSS
–
Digital GND for master clock.
35
A
VS2
–
GND ter
minal f
or c
h-2
A/D con
ver
ter
.
36
AIN2
I
Analo
g input terminal f
or c
h-2
A/D con
ver
ter
.
37
A
VD2
–
VDD ter
minal f
or c
h-2
A/D con
ver
ter
.
38
A
VD5
–
VDD ter
minal f
or c
h-2 D/A con
v
er
ter
.
39
A
O2N
O
CH-2 D/A con
ver
ter analo
g opposite phase output.
40
A
O2P
O
CH-2 D/A con
ver
ter analo
g nor
mal phase output.
41
A
VS5
–
GND ter
minal f
or c
h-2 D/A con
v
er
ter
.
42
VSS3
–
GND terminal for digital system.
43
VDD1
–
VDD terminal for digital system.
Pin No.
Pin Name
I/O
Function
44 – 52
NC
–
Normally open.
53
VSS4
–
GND terminal for digital system.
54 – 68
NC
–
Normally open.
69
VSS5
–
GND terminal for digital system.
70
VDD2
–
VDD terminal for digital system.
71 – 79
NC
–
Normally open.
80
VSS6
–
GND terminal for digital system.
81
X768
I
T
est input ter
minal. Normally f
ix
ed to
“L
”.
82
BFO
T
O
Clock di
vided frequenc
y output.
83
INVI
I
T
est input ter
minal. Normall
y f
ix
ed to
“L
”.
84, 85
NC
–
Normally open.
86
SI
I
Serial data input with one sampling f
or tw
o c
hannels.
87
BCK
I/O
Serial bit transmit clock pin for serial input/output data SI and SO.
88
LRCK
I/O
Serial bit frequenc
y c
lock pin f
or serial input/output da
ta SI and SO
.
89
XMST
I
BCK and LRCK master/sla
v
e mode select signal input. “L
” : master mode.
90
VSS7
–
GND terminal for digital system.
91 – 98
NC
–
Normally open.
99
VDD3
–
VDD terminal for digital system.
100
A
VD0
–
Dig
ital
VDD ter
minal for DRAM.