TEC SX4T - B B/W Direct Thermal User Manual page 127

1. OUTLINE
l
Interface circuit
T
Input circuit
RD
CTS
DSR
T
Signal level
Input voltage: "H" .. +3V~ + 15V
(2) Centronics interface
c
Data input method:
d
Control signals
Compatibility mode: nStrobe, nAck, Busy, PError, Select, nAutoFd, nInit, nFault, nSelectIn
ECP mode:
e
Data input code:
f
Receiving buffer:
g
Input/Output circuit configuration and Input/Output conditions
Type
Input/
Output
Input
Output
SN75189 or equivalent
"L" ... –3V~ – 15V
8-bit parallel (DATA 1~8)
HostClk, PeriphClk, PeriphAck, nAckReverse, XFlag, HostAck,
nReverseRequest, nPeriphRequest, IEEE1284Active
ASCII, JIS 8-bit code for European characters, 8-bit code for graphic
1MB
Signal Name
Data 1 8
nStrobe/HostClk
nInit/nReverseRequest
nAutoFd/HostAck
nSelectIn/IEEE1284Active
Busy/PeriphAck
nFault/nPeriphRequest
nAck/PeriphClk
Select/XFlag
PError/nAckReverse
T
Output circuit
SN75188 or equivalent
TD
RTS
DTR
Output voltage: "H" .. +6V ~ +13V
Configuration
SN74LS14 or equivalent
+5V
1K
+5V
SN74LS14 or equivalent
1K
100P
SN7406 or equivalent
1- 9
EO10-33013A
1.5 ELECTRONICS SPECIFICATIONS
"L" ... –6V ~ –13V
Logical level (input)
"1" = 2~5V
"0" = 0~0.4V
+5V
Logical level (input)
"1" = 2.4~5V
1K
"0" = 0~0.4V
100P