Sony SLV-7700KME, Service Manual

Page: 89 / 135

6-9
Pin No.
Pin Name
I/O
Function
40
A17
O
41
A18
O
A
d
d
ress b
us output.
42
A19
O
43
MPEG
I
MPEG w
ait input.
44
MD0
I
Operation mode setting terminal. (Connected to +5V)
45
MD1
I
Operation mode setting terminal. (Connected to ground)
46
Ø
O
System clock output (Not used).
47
STBY
I
Shifts to the hard
w
ar
e standby mode when the standby terminal becomes
“Lo
w”. (Unable to use H le
v
el f
ix
ed) (Connected to +5V)
48
RESET
I
Set into reset w
hen the r
eset input pin becomes
“Lo
w”.
49
NM1
I
Requests mask disable inter
ruption. (Unable to use H le
v
el f
ix
ed)
(Connected to +5V)
50
VSS
–
GND.
51
EXT
AL
I
Connected to the Cr
ystal oscilla
tor
.
T
he EXT
AL pin is also a
b
le to
input e
xter
nal cloc
ks.
52
XT
AL
I
Connected to the Crystal oscillator
.
53
VCC
–
Connect to the po
wer supply
. (+5V)
54
AS
O
When the addr
ess strobe pin is
“Lo
w”,
indicates that addr
ess outputs on
the addr
ess b
us ar
e v
alid
.
55
RD
O
When the read pin is
“Lo
w”,
indicates tha
t the e
xter
nal addr
esses space is
in the read state.
56
WR
O
When the read pin is
“Lo
w”,
indicates tha
t the e
xter
nal addr
esses space is
in the wr
ite sta
te and the da
ta b
us are v
alid
.
57
RESO
O
Reset output (Not used).
58
A
VSS
–
A/D con
v
er
ter (pin62-69) gr
ound
.
59
TEST0
I
T
est 0 input.
60
TEST1
I
T
est 1 input.
61
TEST2
I
T
est 2 input.
62
SENS
I
Internal state (SENSE) monitor input from BD-21 board.
63
D
A
C-SELECT
I
A
udio D/A con
v
er
ter select mode setting ter
minal.
64
NPIN
I
NTSC/P
AL output mode setting ter
minal.
65
CXD1853-SELECT
I
CXD1853 select mode setting terminal. (H : CXD1853 used)
66
VREQ
I
Not used.
67
VREF
I
A/D con
ver
ter (pin62-69) r
ef
er
ence v
olta
ge input. (connected to +5V)
68
A
VCC
–
A/D con
ver
ter (pin62-29) po
wer supply
. (connected to +5V)
69
CXD1913L
TH
O
Serial data latch pulse output to CXD1913. (Digital NTSC/P
AL encoder)
70
XHIRQ
I
Interr
uption request input from MPEG decoder
.
71
SCOR
I
Subcode sync input from BD-21 board.
72
MREQ
I
Inputs command r
equest fr
om system contr
oller
.
Pin No.
Pin Name
I/O
Function
73
D
A
T
A
O
Serial data output to BD-21 board, CXD1913 and CXD8567.
74
AMUTE
O
Mute switching to BD-21 board.
75
LDON
O
Laser diode ON/OFF output.
76
XL
T
O
Latch output to BD-21 board.
77
SCLK
O
SENS serial data reading clock output to BD-21 board.
78
CLK
O
Serial data clock output to BD-21 board and CXD1913.
79
NP OUT
O
NTSC/P
AL output select.
80
2545RST
O
Dig
ital signal pr
ocessor
. (CXD2545Q system r
eset)