
STANDARD
Parallel And Serial
BIP {Basic Interface Pack)
Control
1.
Host
Computer
(Cenironici
Co
Clocked Serial
Connector
mmodors
Circuit Block
V
like)
Connector
)/0
I
J.
I
I
j
Connector
I/O
Diagram
l/F Select
Circuit
) G
7T
Serial Bus
Control
Circuit
MHz
8
^^
ALE
CPU
^mI
Address
Laich
v.
7^
Block
ROM
Shift
Register
c
Diagram
II
128k'
Driver Interface
oTp
Switcfies
<o-
-crb-
Bus
U
RAM
J
8k
Power
P.C.B.
/Driver
block
A
parallel or
of 8 bits
data
together with
input
input
.At
inside.
enabled.
is
data
Serial data
serial bus
CPU takes
The
Printing is
code, etc.
CR
unit is
This
structions
assigned
diagram
tor the
Commodore
(*DATA1 to
the strobe
of
When
CPU
the
from
control circuit.
in the data
started
received.
is
controlled
will
interface
to
executed
be
parallel
serial
*DATA8)
the data.
signal,
finishes
processing
host-computer
when
if the
data
an
by
with
for host
lines
serial BIP
and
can be selected by
is input
becomes HIGH
BUSY
input
8-bit
signal
the data,
input
is
transferring
reaches
one-chip
minimum
a
and interface bus
CPU
through TTL
of
one line
microcomputer.
unit of 1
1
Fig.
is shown
the
the I/O connector.
via
in Fig.
DIP switches
and
BUSY
1
signal
is completed.
byte
or print start
nS.
level
with
For interface,
1.
on the
Interface Board.
Strobe
*DATA1
to*DATA8will be
becomes LOW
converted
and
command
The clock
The CPU
Power/DriverPCB.
of CPU
has36I/O
either
signal (*DSTB)
again
parallel data
to
code
ports
Centronics
inputting
and
such as LF
MHZ
is
8
and they are
Parallel
also
is
stored
of
in the
code,
and in-
^
-D-1
-

(3)
Description
•
'DSTB:
•
*DATA1 to
•
*ACK:
•
BUSY:
about interface
signals
Synchronized pulse of
than
0.5mS
'DATAS:
logical 1 and LOW
demanding
Data
proximately
the receiving end.
at
The parallel
level
signal sent
5 tiS.
This is
HIGH level Indicates a
BUSY state may
is in READY
BUSY
conditions are as
not be guaranteed.
condition.
of
CN12
parallel data. The pulse width of this signal must be
8-bit
data sent from
for
logical
a
from
strobe
a
"printer busy" status to
follows:
the
sent
0.
printer
out
When
to
when the printer
this signal
the host CPU. High level for
the
host CPU.
the host CPU.
goes to LOW level, the printer
The
goes to
pulse
READY
Data
width
sent during
more
is
state.
a
ap-
a.
b.
c.
•
PE;
Goes to
-matically set to
inserted.
•
SLECT:
•
'AFXT ('AUTO
•
"PRIME
•
'FAULT
•
"SLOT
Connected to +5V
ly fed after
cates the
buffer are cleared.
receiving end.
three
a.
b.
c.
Printer
•
•
IN:
During
data
OFF LINE
In an alarm
HIGH
level
FEED XT):
printed by OR
(*INIT):
(ERROR):
Printer
printer
When
conditions;
Paper Out
OFF LINE
Printer Error
error conditions
Home position
During printing,
did not
match.
When this
receive time
condition
when paper
LINE. It
OFF
via a 3.3
Kn resistor.
When this
code.
initializing
is in the
The pulse
sensor
collation
signal is in LOW
same condition as
this signal is
are as
cannot be detected
runs
cannot be reset to ON
signal is
signal.
In paper out
out.
set to
LOW
When this signals
LINE status
level, one line is automatical-
is
power on.
width of this signal must be
in LOW
follows:
of the
level, the
level, the printer
moving
by
current
address and
printer is selected.
status,
set to
the printer
until
LOW
The contents
more than
is in one of the
the print
the home
head
is
auto-
paper is
new
level, that indi-
of the print
the
50 fiS
at
position
at
following
power
on.
sensor
r^
•SLCTIN
Since the
the connection on
to
signal
o
'SLOT
the
IN
HOST
777-
has the
-D-4-
JP1
circuitry
side.
LS04
Fig. 2
Driving
shown
in Fig.
with TTC IC may
caution
2,
should be paid
damage.
cause

+5 V:
The
Power
printer
timing chart for data-input is shown in Fig.
supply of +5 V. This line must
may be damaged.
SUSY
'ACK
3..
not
be used
the HOST side. If used, the
at
3. Timing Chart
Fig.
-
D-5-

(4)
transfer sequence
Data
BYTE SENT UNDER ATTENTION
ATN
CLOCK
-
Tat^
DATA
ATN
\\\\\
END-OR-IDENTIFY HANDSHAKE ILAST BYTE IN
TALKER
cTockJUUVI
DATA
MSB
TS
TMe>
"*"
Th
LISTENER
READY-TO-SEND
-Jth
--Tv
LSB
DATA VALID
BB
*-Tvp
12 3
REAOY-FOR-DATA
TALKER SENDING
4
MESSAGE)
Lfiniiniumn
Tc--
-
T,
(TO 06VICES1
5 6 7
--T
RY
MSB
—
t-Tp-
TRk
LISTENER
NORMAL
DATA
BYTES
DATA-ACCEPTED
t
TALK-ATTENTION
ATN
="^jumri
DATA
MS8
TALKER
I
u
t
EOI-TIMEOUT
LISTENER
TURN AROUND (TALKER
"hi
Tdc
ITK
READY-FOR-DATA
-
DEVICE ACKNOWLEDGES IT IS
TALKER REAOY-TO-SEND
'DA
-A^H
BECOMES
READY-TO-SEND
TALKER SENDING
Tc
mrLTuuiJuui
NE
L3
LSELSB
DATA VALID
t
LISTENER READY-FOH-OATA
LISTENER,
STENER READYFOR.DATA
HANDSHAKE
LISTENER
>
TO LISTENER <
NOW
Liumjuiim
\
-~Js
t.
r0
LSB
READY FOR
CLOCK
DATA
-
HIGH, DATA LOW
MSB
LISTENER
T
^
SYSTEM LINE
-
TALKER)
TALKER
MSB
""nE
ummL
\
DATA-ACCEPTED
RELEASE
-D-8-

.
Description
ATN RESPONSE (REQUIRED}'
LISTENER HOLD OFF
NON-EOI
BIT
DATA
RESPONSE TO RFD^
SET-UP
TALKER^
VALID
FRAME HANDSHAKE^
FRAME
BETWEEN
EOl RESPONSE TIME
EOl RESPONSE HOLD TIME
TALKER RESPONSE
TO RELEASE
BYTES TIME
OF ATN
LIMIT Th y
BYTE-ACKNOWLEDGE^
Notes:
1
If maximum
If maximum time
2.
If
maximum time
3.
4.
Ty
and
Tpp
time
exceeded, device not
exceeded;
exceeded, frame
minimum
must be
Table
2.
present error.
EOl response
error.
for external device
60
ms
Serial Bus Timing
Symbol Min.
Tat
Th
Tn
e
Ts
Tv
Tf
Tr 20fiS
Tb8
T"ye
Te.
TpR
required
—
—
20;iS
20;£S
— —
—
60
fjs
/IS
20
be
to
talker.
a
Typ.
40
70
20
20
256
30
30
Max.
_
_
/is
/iS
/IS
^s
—
1000
oo
200
_
—
1000
—
ms
/iS
Axs
—
60
—
—
MS
—
;is
—
us
tJS
-
D-9-

4. Specification
Setting DIP Switches
4-1.
Serial Interface
4-M. Setting of SW1
SWNo. Function
M
1-2
1-3
M
1-5
1-6
1-7
1-8
Valid only when
4-1-2.
Interface Select
ASCI 1 Translation PET
Control Code Mode
NLQ/Drafi
Device Select
Paper
End Detector Enable
Auto Line
Normal/Compressed Normal
Setting of SW2
Mode {SWl-1
OFF]
OFF
Serial
ASCII
Commodore
Draft
4
Feed* Disable
SWl-3 is "ON" Ignore If SWl-3 is
Compressed
"OFF".
ON
Parallel-
ASCII
Epson
Factory
NLQ
5 OFF
Disable
Enable
Setting
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Switch Function OFF
2-1
2-2
2-3
2-4
USA/UK/Neiherlands OFF
Select
International
Character
Unused
COUNTRY
See Below
Set
SW2-1
Denmark/Norway OFF
Sweden/Finland
Germany
France/Belgium ON
Italy ON
Switzerland
OFF
OFF ON ON
ON ON OFF
ON Factory Setting
OFF
OFF
OFF
-
SW2-2 SW2-3
OFF
OFF OFF
OFF ON
ON OFF
OFF OFF
OFF ON
Spain
ON ON ON
r-
D-10-

4-2.
Parallel Interface Mode
Note) Setting
of SW2-1
(SWl-1 ON)
through
SW2-4
is
unavailable.
4-3.
4-4.
4-5.
Switches SW1-1, 2 means the following:
SWNo.
Function
SW-M Interface Select
SW-1-2
Switches
SWl-4 SWl-3 Operation mode
OFF OFF mode 1
OFF ON mode
ON OFF mode
Adds line feed
SW1-3, 4 indicates the four operation
CR code Enabled
to
II
III AMIGA
ON ON mode IV IBM-PC
SW1-5, 6, 7,
8 means the
following according to the abovementioned operation mode:
ON OFF
Parallel
modes according to
Control Code
ESC/P
Serial
Disabled
its status:
t
4-5-1.
4-5-2.
mode
I
SWNo.
SW1-5 Codes
SWl-6 Font of zero
SWl-7 Print style
SWl-8 Condensed
in columns 8th and 9th Graphic character Control character
mode I
SW No.
SWl-5
Selection
SW1-6
(Refer to
SW1-7
SWl-8
Page length
Function ON OFF
Zero and slash
Correspondence
quality
mode 17CPI
Function ON
of international character
4-4-5.)
/
/
12 inches 1 1
Normal
Draft
lOCPl
OFF
inches
-D-n
-

/^
n.
Y8308-0
^[
CITIZEN®
-i*- + IC7
C3
o
o
z
CI
_
•
-
I
O
u
_+
"
SW2
.
)
RM5[
ten
*z
JP4
C7
C.7 CIS
5'
M
o
C2a
rv-n
r
o
C21
C13
M
1
:;
?i
«
**
Sew
_
_
"H
^
?i
•J
^
HK
D
CIS
o
MADE
IN
JAPAN
£EC0 ETP370A
Ht-
p_/-i
r r
«t
4t- C9
\.q
,
01 *
«
r-n
r
VI u
ft
HN4
f
1
\_q
r
M
o
2
z
«
1
w
3
«
S
Mounting Diagram (Basic Interface
Pack)