User's Manual

UMAC Turbo CPU/Communications Board Hardware Manual
Board Connector Pinouts 18
BOARD CONNECTOR PINOUTS
J7: Primary Serial Port Connector (RS232)
Front View
Pin #
Symbol
Function
Description
Notes
1
PHASE+
In/Out
Phasing Clock
2
DTR \ PHASE-
Bidirect
Data Terminal Ready
3
TXD/
Input
Receive Data
Low True
4
CTS
Input
Clear to Send
High True
5
RXD/
Output
Send Data
Low True
6
RTS
Output
Request to Send
High True
7
DSR \ SERVO-
Bidirect
Data Set Ready
8
SERVO+
In/Out
Servo Clock
9
GND
Common
Board Common
10
+5V
Output
+5VDC Supply
See jumpers E1A, E1B, E17A, E17B, E18A and E18B for details about pins 1, 2, 7 and 8
J8: Auxiliary Serial Port Connector (RS232)
Front View
Pin #
Symbol
Function
Description
Notes
1
INIT-
Input
Hardware Reset
Pull to GND for reset
Do not connect if used as RS-232
2
DTR
Bidirect
Data Terminal Ready
Shorted to DSR.
3
TXD/
Input
Receive Data
Low TRUE
4
CTS
Input
Clear to Send
High TRUE
5
RXD/
Output
Send Data
Low TRUE
6
RTS
Output
Request to Send
High TRUE
7
DSR
Bidirect
Data Set Ready
Shorted to DTR.
8
N.C.
N/A
-
Not Connected
9
GND
Common
Board Common
10
+5V
Output
+5VDC Supply
J9: Universal Serial Bus Port (USB)
Pin #
Function
1
N.C.
2
DATA-
3
DATA+
4
GND
5
SHIELD
6
SHIELD
This connector is used in conjunction with USB A-B cable which can be purchased from any local
computer store. It is provided when Option 1A is ordered. The A connector is connected to a PC or Hub
device; the B connector plugs into this port.