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PO
Indicat=--/
positive-going shift
through
AC coupling
po'it;v~-9oing
pulse
"~90tive-goin9
pulse
Figure 43.
Capacitive Inputs
the accompanying illustration (Figure 44A) 006x
is a non-logiC connection to the two-way OR block.
The example (Figure 44B) shows the use of the
X
in
the edge of the block. There is an X on the
lines labeled 005 and J13, showing that these lines
are the same. (It is really one ground line that is
common to several blocks and completes the
ground circuit in these blocks.) At location lL,
lines D13 and G13 are similar to lines 005 and J13
except that there is a K at G13 because a net may
have only one source. (Other input lines toa net
are designed with the K.)
004
;)05
008
8;(J\
006
- - - - - - l (
--804
--81~
--01:,4
--005
--812
--813
--012
--013
809
.9-
AR
-
U
.
T06CE
810
2L-DL
o
Figure 44. Non-Logic Connections to Logic Blocks
Line Names
Inp.lt Line
Each input line entering an ALD page has a net num-
ber and a line name.
The net number (Figure
4~)
is composed of the
source page, the serial number of the source block.
and the line origin of the source block.
For example.
AC221AR4 means that tWs line came from page AC221
trom the block whose serial number is AR on that
pa~e,
and from the fourth line positiun on the block.
When
::.til
input line comes from more than one par-
ticular unit, such as one of many types
or
I/o
unit.s,
or from more than one memor}. a pseudo-net num-
oer
wili
be put on the ALD net numher p05ition.
These pseudo-net numbers will generally he in se-
quence un a page starting at 000.
A net is a set of signal points (a source and sinks)
which are electrically interconnected. Generally the
source point refers to the output pin of the drhing
block, and the sink points refer to the input pins at
the driven blocks.
The net identific::nion is used to
indicate which points (pins) belong
ti)
a given network.
The line name is generally a description of the line
function and is signed plus
(-+)
or minus (-), depl.!nding
upon the active condition of the line at that point.
If
most of the lines in the box are plus
(-+),
the sign may
not appear unless it is minus (-).
Output Line
\)n each output line leaving the ALD
pa~e,
the sink
page Dumber (where the line is going), the line name
(with the sign of the active state of the line), and the
line origin are printed.
The line origin is composed of the
s~rial
number
of the last
lo~ic
bloc\;. before
I
ht'
I
inc
lIanw
and
tilt'
number of the
printin~
line of that hl()ck.
Whenever the olltput line branches to
se\'t'\"a
I
pages,
the other "to" pages are listed lJt'iO\\ t h('
sll1k
pa~('
numb('r.
For example.
if
the output line is
"TC128-2 Read Data Line AF4, " the sink page num-
ber is TC128 (the page where the line is going): the
active state of the line is minus (-) and a description
of the line would be "2 Head Data Line": the sourcp
point is the logic block whose serial number is
A F,
and the line leaves the block at position .t.
Input
l
.
I F f
No e
~A8101
F
Nel N"mb· ...
UR
ogtCO.
h
~~~et:; pri"'~
'-- Poge Number
AC221AU
/
.
.
.
Output
N~I
A8101(04
. . OC621CD4
C
Blocle Serial Number
Figure 4!J.
Net Numbers
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