Advertisement
Explanation
of Signals
The
various
input
and
output signals of
the LNT board are
explained with the
pin
-
out charts m Tables
4
-
1
, 4
-
2 and 4
-
3
.
4.5
.
14.5
EXPLANATIONS
FROM
TO
NAME
BUFFERED
CHIP SELECT
BIAS REFERENCE FOR APR AUDIO
SYSTEM
SEE CNJ
440
BIAS PULSE FOR APR AUDIO SYSTEM
INTERRUPT FROM APR AUDIO SYSTEM
WR OF Z 8000
INTERRUPT
FROM
APR AUDIO SYSTEM
RD
OF Z
8000
Z 8000 DATA BUS
BUFFERED Z 8000 ADDRESS
BCSB
BIAS
REF
.
X
X
RESET
BIAS PULSE
ACALINT
X
X
X
WR
X
ACNTLINT
X
RD
X
A 15
DA 0
AA 8
AA 11
X
X
X
Table 4
-
1
.
CNJ 442 TO / FROM AUDIO SYSTEM
NAME
TO
FROM
EXPLANATIONS
Z 8000 CPU
Bus
CHIP SELECT
Z 8000 RD ( Buffered
Read Enable
)
Z 8000 WE ( Buffered
Write Enable
)
SOFTWARE PROGRAMED RESET
Z 8000 A
8
BIAS REF SIGNAL FROM CPU
EXT CAPSTAN REFERENCE ( PARALLEL
REMOTE )
ROLLER PULSE TO
OUTSIDE
TAPE DIRECTION TO OUTSIDE
CHIP SELECT
MVC CONTROL
SIGNAL (
DC
Voltage
)
GENERATOR TC TO
BE RECORDED
(
Internal
Generator )
REPRODUCED TC FROM TAPE ( Internal
Reader )
TC FROM
REAR PANEL (
External
Reader )
GENERATOR TC TO
OUTSIDE (
External
Generator
)
DO
- >
D 15
MONITOR CS
X
X
X
RDZ
X
WRZ
RESET
X
X
A 8
X
BIAS REF
.
EXT
SRC
X
X
TAPE
TACH
TAPE DIR
REMOTE CS
MVC ANALOG
REC TC
TX
X
X
X
X
X
PB TC RX
X
EXT
TC
RX
X
EXT OUT TC
X
TX
Table 4
-
2
.
CNJ 440 TO / FROM CNX
4
-
46
Advertisement
