Philips PCL304 - Circuit Diagrams

8-8
8.1.5 Circuit diagrams
8
eS
S
4
3
2
1
D
+
5
[
CO-—-
PROCESSOR
RIS|
(optional)
10K
CPU
Nic
UCC
PIN=
+
+
UCC
PIN
~uR
_
4,9,
13,22
e
;
8.9,10.21,32,
39.42
PROCCLK
34)
cocci
Ke
.25:31-33
48,57,69,71,34
-ADS
37,39,.43
RS7
R33
<RS2
2:,97
RESET387___
Sling
9-46,
80.
SB
‘
Sik
1K
31K
13
—-BHE
READY
43)
eeapy
52,64
Ss
,
S
10K
RESETCPU
[23_|
A-NPS1
PROCCLK
NPS2
-NA
q-CMO
PPACCLK
CPUHROO
Bdskie
oc
C
-BUSY386
TIVHI
=
TREACY
eee
INTR
DLS
CPUNMI
Si
Ae
l2lni4
«=-s«A
S
S2__
a3
15\515
80387Sx
ms
a
Blo12
STEN
—
45
a
SS_A6
ae
st
Ri9e
<R139
dle
1
Cae
DS
67
10K
>
10K
28
i372
os
“READ
YO
P==
PEREQCOP
arcs
Sais
ne
Ree
Vise,
ee
BUSY
:
60
Aie
0s
©
:
93
98)
os
BUSY
eae
aes
-ERROR
4
35)
05
Sing
«ERROR
RO
et
cit
ee
el
0s
_
94
04
ng
pas
03
Sing
yo2 23
D2
6
:
7
eSio1
GNO
PIN=
00
23ing
entre
’
*
ca
B
ye
BL?
27,32,34,38,42
ce
55,60,61,63,66
88
A
J
GND
PIN
_—-23
82-823
air
ae
ee
i
22,35,41,49,58,63
67,68,
77,
78,85,98
A
BUS
(1-231
D
BUS
¢te-1s3
PEREQ
J14
Pmce2
HLDA
rd ria
CPUHLDA
A
CPUHRQO
hd
a
CPUHRQ
-BHE
Jil
-BHEO
PEREQCOP
re
ie
PMC1
CS 55 825
J10@
Sheet 1 of 17
no. 45 776 Al2