10
10
TTP-2410M/346M/644M
TTP-246M Plus/344M Plus
Bar Code Printer Service Manua
l
2.2 Interface Pin Configuration
RS-232C
PIN
CONFIGURATION
1 +5
V
2 TXD
3 RXD
4 CTS
5 GND
6 RTS
7 N/C
8 RTS
9 N/C
USB
PIN
CONFIGURATION
1 +5
V
2 D-
3 D+
4 N/C
5 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
