Toshiba B-SX5T - Page 11

1. OUTLINE EO10-33013B
1.5 ELECTRONICS SPECIFICATIONS
1- 9
l Interface circuit
 Input circuit  Output circuit
 Signal level
Input voltage: "H" .. +3V~ + 15V Output voltage: "H" .. +6V ~ +13V
"L" ... –3V~ – 15V "L" ... –6V ~ –13V
(2) Centronics interface
c Data input method: 8-bit parallel (DATA 1~8)
d Control signals
Compatibility mode: nStrobe, nAck, Busy, PError, Select, nAutoFd, nInit, nFault, nSelectIn
ECP mode: HostClk, PeriphClk, PeriphAck, nAckReverse, XFlag, HostAck,
nReverseRequest, nPeriphRequest, IEEE1284Active
e Data input code: ASCII, JIS 8-bit code for European characters, 8-bit code for graphic
f Receiving buffer: 1MB
g Input/Output circuit configuration and Input/Output conditions
Type Signal Name Configuration
Input/
Output
Data 1 ∼ 8
Input
nStrobe/HostClk
nInit/nReverseRequest
nAutoFd/HostAck
nSelectIn/IEEE1284Active
Output
Busy/PeriphAck
nFault/nPeriphRequest
nAck/PeriphClk
Select/XFlag
PError/nAckReverse
NOTE: When using a Centronics Interface Cable on the B-SX5T Series
Please put the ferrite core on the Centronics interface cable, close to the connector (printer side),
and secure it with a cable band as shown below.
Logical level (input)
"1" = 2~5V
"0" = 0~0.4V
Logical level (input)
"1" = 2.4~5V
"0" = 0~0.4V
R
D
C
TS
D
SR
SN75189 or equivalent
TD
RTS
DTR
SN75188 or equivale
nt
SN74LS14 or equivale
nt
1K
+5V
S
N7406 or equivalent
+5V
1K
100P
SN74LS14 or equivale
nt
1K
+5V
100P
Ferrite Core
Connector (Printer Side)
Cable Band
Centronics Interface Cable
Hook
NOTE: Be sure to close the ferrite
core until it snaps.