PPC-E7+ User Manual.doc
-7-
Rev 1.3 © 2015 EMAC, Inc.
Table 2 (COM B Pinout)
Pin Number
Pin Description for 10-
Pin Header
Pin Description for DB9
Connector
1
NC
NC
2
NC
RxD
3
RxD
TxD
4
NC
NC
5
TxD
GND
6
NC
NC
7
NC
NC
8
NC
NC
9
GND
NC
10
NC
-
Table 3 (COM C Pinout)
Pin Number
Pin Description for 10-Pin
Header
Pin Description for DB9
Connector
1
422/485 TX-
422/485 TX-
2
NC
232 RX, 422/485 TX+
3
232 RX, 422/485 TX+
232 TX, 422/485 RX+
4
RTS
422/485 RX-
5
232 TX, 422/485 RX+
GND
6
CTS
NC
7
422/485 RX-
RTS
8
NC
CTS
9
GND
NC
10
NC
-
Table 4 (COM D Pinout)
Pin Number
Pin Description for 10-
Pin Header
Pin Description for DB9
Connector
1
NC
NC
2
NC
RxD
3
RxD
TxD
4
NC
NC
5
TxD
GND
6
NC
NC
7
NC
NC
8
NC
NC
9
GND
NC
10
NC
-
2.5
USB Host Ports
The PPC-E7++ provides one, USB 2.0 (USB PortA) high speed host port (JK3). USB PortA and PortB can be
accessed from the bulkhead connector (HDR5). EMAC can provide a cable (CAB-40-004) to access these ports.
In addition to the one USB Host port, the PPC-E7+ provides a USB On-The-Go (OTG) port. This port can be used
as either a USB Host or USB Device port.
All of the USB ports are equipped with 500mA re-settable Polyfuses. If a USB Device tries to draw more than
500mA from the port, the fuse will open until the device is unplugged or its current requirement is reduced. There
is no software provision for shutting down power to the Ports or detecting when a port is drawing too much
current.
