TX200/ TX300/ TX600
Bar Code Printer Service Manual
13
USB Host
PIN
CONFIGURATION
1
5V
2
D-
3
D+
4
GND
Centronics
Pin
SPP Mode
Nibble In/Out
Function
1
Strobe
N/A
In
A
low
on this line indicates that there are
valid data at the host. When this pin is
de-asserted, the +ve clock edge should be
used to shift the data into the device.
2-9
Data 0-7
N/A
In
Data Bus. Single-directional.
10
Ack
N/A
Out
A
low
on this line indicates that there are
valid data at the Device. When this pin is
de-asserted, the +ve clock edge should be
used to shift the data into the host.
11
Busy
N/A
Out
When in reverse direction, a
high
indicates data, while a
low
indicates a
command cycle. In forward direction, it
functions as PtrBusy.
12
Paper Out /
End
N/A
Out
When
low
, device acknowledges reverse
request.
13
Select
N/A
Out Extensibility flag
14
Ground
N/A
GND Ground
15
No Defined
N/A
N/A
16-17
Ground
N/A
GND Ground
18
No Defined
N/A
N/A
19-30
Ground
N/A
GND Ground
31
No Defined
N/A
N/A
32 Error / Fault
N/A
Out A
low
set by the device indicates that the
