
Chapter 2 Installation 35
2.24 USB connectors (CN15)
The PCM-9550F/FM/L board provides two USB (Universal Serial
Bus) ports which gives complete plug and play, and hot attach/
detach for up to 127 external devices. The USB interfaces comply
with USB specification Rev. 1.0, and are fuse protected.
The USB interface is accessed through one 5-pin flat-cable
connector, CN15. You will need an adapter cable if you use a
standard USB connector. The adapter cable has a 5-pin connector
on one end and an USB connector on the other.
The USB interfaces can be disabled in the system BIOS setup.
2.25 Digital I/O (CN23, CN28: 8 Outputs, 8
Inputs) (PCM-9550F/9550FM only)
The PCM-9550F/FM/L has eight digital outputs and eight digital
inputs (TTL level). The digital outputs support 8 TTL level or 2
opto-isolated open collector and 6 TTL level output. You can
configure the digital I/O to control the opening of the cash drawer
and to sense the closing of the cash drawer. The following shows
how the digital I/O is controlled via software programming.
gnd
gnd
In 6
In 7
•
••
•
•
•
•
•
•
•
••
•
•
•
•
•
•
•
•
Out 0
Out 1
Out 2
Out 3
Out 5
Out 4
Out 6
gnd
In 0
In 2
In 4
Out 7
Gnd
In 1
In 3
In 5
Figure 2-5: CN 23 Digital Input/Output
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