ADLINK Technology CoreModule 740 Reference Manual page 41

Appendix B
Table B-1. Utility 1 Interface Pin Signals (J1) (Continued)
12 DSR2*
13 RXD2
14 RTS2*
15 TXD2
16 CTS2*
17 DTR2*
18 RI2*
19 GND
20 TXD2_
TTL
(NF)
21 USB PS0
22 USB
PWR
23 USB P0-
24 USB P0+
25 GND
26 USB PS1
27 USB
PWR
28 USB P1-
29 USB P1+
30 GND
31 MS Dta
32 MS Clk
33 GND
34 MS Pwr
CoreModule 740
J5-23 Serial Data Set Ready 2 – Indicates external serial communications
device is powered, initialized, and ready. Used as hardware handshake
with DTR2 for overall readiness to communicate.
J5-25 Serial Receive Data 2 Input – This line is typically held at a logic 1
(mark) when no data is being transmitted, and is held "Off" for a brief
interval after an "On" to "Off" transition on the RTS2 line to allow the
transmission to complete.
J5-27 Serial Request To Send 2 – Indicates serial port is ready to transmit
data. Used as hardware handshake with CTS2 for low level flow
control.
J5-29 Serial Transmit Data 2 Output – This line is typically held to a logic 1
when no data is being sent. Typically, a logic 0 (On) must be present
on RTS1, CTS1, DSR1, and DTR1 before transmitting data on this
line.
J5-31 Serial Clear To Send 2 – Indicates external serial communication
device is ready to receive data. Used as hardware handshake with
RTS2 for low level flow control.
J5-33 Serial Data Terminal Ready 2 – Indicates port is powered, initialized,
and ready. Used as hardware handshake with DSR2 for overall
readiness to communicate.
J5-35 Serial Ring Indicator 2 – Indicates external modem is detecting a ring
condition. Used by software to initiate operations to answer and open
the communications channel.
J5-37 Digital Ground
J5-39 Serial Port 2 Transmit TTL – Places TTL TX signals on pin 3 of the
Serial Port 2 (J4) when jumper (W1) on I/O Interface Board is set to
pins 2-3. (NF = No function at the CoreModule 740.)
J5-41 Power sense – The voltage network monitors power and disables port
if this input is low. Direct power input through fuse on I/O Interface
Board provides over current protection.
J5-43 USB Port 0 power (+5V +/-5%)
J5-45 Universal Serial Bus Port 0 Data –
J5-47 Universal Serial Bus Port 0 Data +
J5-49 USB Ground
J5-51 Power sense – The voltage network monitors power and disables port
if this input is low. Direct power input through fuse on I/O Interface
Board provides over current protection.
J5-53 USB Port 0 power (+5V +/-5%)
J5-55 Universal Serial Bus Port 1 Data –
J5-57 Universal Serial Bus Port 1 Data +
J5-59 USB Ground
J5-61 Mouse Data
J5-63 Mouse Clock
J5-65 Ground
J5-67 Mouse Power (+5V +/-5%)
Reference Manual
I/O Interface Board Description
37