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Sony CDU31A Series Service Manual page 48

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CXD1186BQ
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
-TOP VIEW
65
40
66
39
67
38
68
37
69
36
70
35
71
34
72
0
0
33
73
32
74
31
75
30
76
29
77
28
78
0
27
79
26
80
25
1 2
3
4
5
6
7
8
9 10 "
12 13 14 15 16 17 18 19 20 21 22 23 24
Pon
Symbol
1/0
O..Cnpt1on
Pon
Symbol
1/0
ONcnption
1
INT
0
Interrupt request 1ignel to CPU
41
BAS
0
BUFFER MEMORY AOORESS
2
·aND
-
Gronnd
term1n,I
•2
CND
-
Gronnd termiNll
3
AO
I
CPU addrus lingnel
43
BA10
0
llUR'ER MEMORY ADDRESS
4
Al
I
CPU addrus singnal
44
BA11
0
BUFFER MEMORY A00AESS
5
A2
I
CPU
addrus
11ngnal
45
BA12
0
BUFFER MEMORY A00AESS
6
A3
I
CPU addl'UI 11ngnal
46
BA13
0
BUFFER MEMORY AODRESS
7
HMDS
I
Host
mode .-ct aional
41
BA14
0
BUFFER MEMORY AOOAESS
8
HAO
I
Host
eddNU lillNll
48
BAIS
0
BUFFER MEMORY AODRESS
9
HAI
I
Hoot_...,.,
48
XMOE
0
-
......,,,. -
......... -
logic -
10
XHCS
I
Chip -
nogati .. -
lionol from -
60
XMWR
0
Butt. ......,,,. -
,_IM
logic .....
I
11
HINT
0
l,,_.,PI
NII-I
- I M -
Oilnll
lo
holt
51
IDBO
1/0
-
......,,,. cllbl bull
12
GND
-
Gronnd t9nniNI
52
GND
-
--
13
XHAD
1/0
O.te r.ctino
mtrobl eilnel
tram
hoet
or
to
SCSI C8ntrol
63
- 1
0/0
BUFFER MEMORY DATA BUS
IC
Sol
~
1/0
llUFFER MEMOllY DATA BUS
14
XHWA
1/0
0.tll writil'll ltrobl
9ic1n11I
fron host or to
SCSI
control
IC
65
IOB3
1/0
llUFFEA MEMORY DATA BUS
15
HOBO
1/0
Host.,.
bua
58
BOM
1/0
llUFFEA MEMORY DATA BUS
16
HDBl
1/0
Holt
dltll bu•
57
BOB5
1/0
BUFFER MEMOAY DATA BUS
17
HDB2
1/0
Hoot
cllbl
bus
58
BDB8
1/0
BUFFER MEMOAY DATA BUS
18
HOB3
1/0
Hoot cllto
bus
58
BDB7
1/0
BUFFER MEMORY DATA BUS
19
HDB4
1/0
Holt cllto
bus
60
BOBP
1/0
llUFFEA MEMORY POINTER DATA BUS
20
HOll5
1/0
Hoot
cllto -
61
XTL2
0
X ' t o • - - - - -
21
HOll6
1/0
Hoot -
bus
62
XTLI
I
X'tal
OICill9tion
cirauit
inDUt
tennind
22
HDB7
1/0
Host
data bull
63
GND
-
Gronnd termiNI
23
GND
-
Gronnd
terminal
64
HCLK
0
lCTLl 1/2
diviclld -
'""""I
24
HDllP
1/0
Error
flog •
Hoot
cllto -
65
LACK
I
Lii -
from
co .......
25
XRST
I
AMet
neuetive logic lilNI
66
DATA
I
-
cllltl from
co -
2S
HDAQ
0
O.te
'9QU91t
PG9itiYe
toaK:
et111nel to host. or OMA
67
BCLK
I
Bit ....... from
co .. _
achnowtldga
nlllltiW logic
..,.1
to
SCSI
control tC.
68
C2PO
I
C2
painter from
CO
plaYlf'
27
XHAC
I
Data
~
NIOltMI
togic
8ignal
from
host. or
69
DBO
1/0
CPU DATA BUS
O.u NPUMt PG8itM toaic
ligrt11I
from
SCSI
control
IC.
2S
XTC
I
Terminal cunt N11tiw tooic lianll
70
081
1/0
CPU DATA BUS
29
ADAQ
I
OMA
NQUMt
POlitive
AooiC ....,.,
from ADP
71
DB2
1/0
CPU DATA BUS
30
XAN;
0
OMA ecknowledol
neget1ve
k»gic ...,_,
to ADP
72
DB3
1/0
CPU DATA BUS
31
BAO
0
llUFF9' MEMORY
ADDA&SS
73
Yoo
-
--
(+5v)
terminel
32
BAI
0
BUFl'EA
MEMOAY A0DRESS
74
DB4
l/O
CPU DATA 8US
33
Yoo
-
-
.......
(+5v)
terminal
76
085
1/0
CPU DATA BUS
34
BA2
0
BUFl'EA
MEMORY AODRESS
76
DBS
1/0
CPU DATA BUS
35
BA3
0
BUFFER MEMORY AD0AESS
77
DB7
1/0
CPU DATA BUS
36
BM
0
BUFFER MEMOAY AODRESS
7B
xcs
I
Chip
Mlect nlOltive togic signal from CPU
37
BAS
0
BUFFER MEMORY A00AESS
79
XAD
I
lntemel Ngiater in thia IC
l'Md1ng
ltrobt
ntPtivl
tog1c
aic
ailnel
of CPU
38
BAS
0
BUFFER MEMORY AODRESS
39
60
XWR
I
Internal 1110iater in thta IC writing staobe NOltivl
tODIC
BA7
0
BUFFER MEMORY ADOAiSS
lillrwl of CPU
40
BAS
0
BUFFER MEMORY ADOAESS
7-5

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