Sony CDU31A Series Service Manual page 48

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