Mindeo ES4650 - Page 13

7
The embedded scanner has a TTL-level RS-232 interface to communicate with a host. RTS and CTS
are only used for hardware flow control and should be leaved unconnected or tied to V
CC
by 100K Ohm
resistors when they are not used.
The following diagram demonstrates the interconnection.
TXD
CTS
RTS
RXD Host TXD
Host CTS
Host RTS
Host RXD
Embedded
scanner
Host
Figure 2-3 Embedded scanner and Host interconnection via RS-232
D-
D+ D+
D-
Embedded
scanner
Host
Figure 2-4 Embedded scanner and host interconnection via USB