Freescale Semiconductor Target Interface MMDS0508 - Manual (Page 17)

3–17 MMDS0508 Target Interface
3
Connector Information
3.1 Introduction
This section provides pin assignments and signal descriptions for connectors common
to all MMDS systems. For similar information about EM connectors, see the
corresponding EM user's manual.
Additionally, this section explains the reset switch, and fuse replacement.
3.2 Reset Switch
RS-232 handshake signals control MMDS resets. A reset initializes the control board
from its startup point. If the host serial port does not implement handshaking, you
must reset the MMDS manually.
To do so, find the reset switch, which is recessed behind the small hole in the front of
the station module. Insert a probe or stiff wire into the reset switch hole. Press gently
to trip the switch.
3.3 RS232 Serial Connector
The diagram Figure 3.1 shows pin numbering for the MMDS serial connector. Table
3.1 lists the signals transmitted on the 9-lead serial cable.
Figure 3.1 RS232 Serial Connector
Freescale Semiconductor, Inc.
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