Turbo CPU Board for UMAC Turbo & Turbo Stack
20
Board Connector Pinouts
J8: Auxiliary Serial Port Connector (RS232)
(10-pin Header at Location A-3)
Front View
Pin #
Symbol
Function
Description
Notes
1 PHASE In/Out
Phasing
Clock
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 SERVO In/Out
Servo
Clock
9 GND Common
Turbo
PMAC2-3U
Common
10 +5V Output
+5VDC
Supply
Note 1:
If communicating to Turbo PMAC2-3U over this connector with a modem-style terminal emulator such as
Microsoft Windows Terminal, line 1 should not be connected.
Note 2:
SERVO and PHASE are outputs if jumper E1 is OFF; they are inputs if Jumper E1 is ON.
The J8 connector provides an auxiliary RS-232 serial port, independent of the main serial port at J7. It is provided if
Option 9T is ordered.
TB1: 4-Pin Terminal Block
(Location A-3)
Pin #
Symbol
Function
Description
Notes
1 GND Common
Reference
Voltage
2
+5V
Input
Positive Supply Voltage
Supplies all Turbo PMAC2-3U
digital circuits
3 +12V Input
Positive
Supply
Voltage
+12V to +15V; Not required on-
board; used on J1 to supply analog
inputs
4
-12V
Input
Negative Supply Voltage
-12V to +15V; Required for Opt-12
ADCs; used on J1 to supply analog
inputs
This terminal block can be used to provide the input for the power supply for the circuits on the Turbo PMAC2-3U
board when it is not in a bus configuration. When the Turbo PMAC2-3U is in a bus configuration, these supplies
automatically come through the bus connector from the bus power supply; in this case, this terminal block should not
be used.
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