Reset Switch (S2); Logic Analyzer Connections (J7 - J20) - Motorola M68MPFB1632 User Manual

2.3.3

RESET Switch (S2)

Push-button switch (S2) resets the MEVB. A reset initializes the MEVB to its startup point. The
reset switch is located in the lower left-hand corner of the MPFB. To manually reset your system
press S2 to trip the switch.
The MPFB provides a single reset signal. Thus the system, MPFB and MCU, can be reset from
the following sources:
• S2, manual reset switch, as described above
• Low voltage detection IC, U12B or U12A (SMT footprint)
• ICD16 or ICD32 software command via the BDM connector (J6)
• Logic analyzer connector J14 pin 6
• Incorrect memory configuration on W10 or W12
• MCU, i.e., watchdog ...etc.
2.3.4 Logic Analyzer Connections (J7 – J20)
Use connectors J7 through J20 to connect the logic analyzer to the circuit being evaluated. For
signal descriptions, refer to Chapter 7 and to the appropriate MPB user's manual.
The MPFB has extra holes next to connectors J7 through J20 that give you space for 10-pin
Berg-type strips (shown below). To use such strips, install them on the bottom of the board, and
solder the pins on the top. Wire wrap from the bottom of the MPFB to the user-wire-wrap area.
Be sure to put standoffs in the corner mounting holes to protect the wire wrapping on the bottom
of the MPFB.
BERG STRIP
BGACK/CS2/CSE
M68MPFB1632/D
1
HOLES
SPARE
CLKOUT
BKPT
LAT-DSO
DSO
DSACK1
FC2/CS5
FC0/CS3
SIZ0
19
HARDWARE PREPARATION AND INSTALLATION
BERG STRIP
J14
2
HOLES
SPARE
BERR
FREEZE
LAT-DSI
DSI
DSACK0
FC1
SIZ1
R/W
GND
20
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