INDUSTRIAL I/O PACK SERIES AVME9630/9660 VMEbus 3U/6U CARRIER BOARDS
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A carrier board pending interrupt will cause the board to
release the interrupt to the VMEbus provided the Global Interrupt
Enable bit of the carrier’s Status Register has been enabled (see
section 3 for programming details).
The carrier board releases the interrupt to the VMEbus by
asserting the interrupt request level as pre-programmed in the
carrier’s Interrupt Level Register. The carrier board’s interrupt logic
then monitors the VMEbus Interrupt Acknowledge Input (IACKIN*)
signal.
An active IACKIN* signal, detected by the carrier board, is
either passed to Interrupt Acknowledge Output (IACKOUT*) or
consumed by the carrier board. IACKIN* is passed to IACKOUT* if
the VMEbus interrupt level does not match that programmed into
the carrier’s Interrupt Level Register. If a match is detected, the
carrier board responds to the interrupt by consuming IACKIN*.
The carrier board also responds to an interrupt by driving IP
Interrupt Select (INTSEL*) active to the IP that generated the
interrupt provided only one interrupt has been issued. If two or
more interrupts occur at the same time, then INTSEL* is driven
active to the IP with the highest priority (IP A int0 has the highest
priority, IP D Int1 has the lowest priority, see section 3 for more
detail). The IP module responds by placing the interrupt vector on
the data bus and asserts ACK* active. The carrier then asserts
DTACK* active, and the VMEbus master responds by executing
the code at the address of the interrupt vector.
The user written interrupt routine should include code to clear
the carrier board’s pending interrupt via the carrier’s Interrupt Clear
Register (see section 3) since the interrupt release mechanism is
type Release on Register Access (RORA). In addition, the IP
module may need similar attention (see your IP module
documentation).
Power Failure Monitor
The carrier board contains a 5 volts undervoltage monitoring
circuit which provides a reset to the IP modules when the 5 volt
power drops below 4.27 volts typical / 4.15 volts minimum. This
circuitry is implemented per the Industrial I/O Pack specification.
Assess LEDs and Pulse Stretcher Circuitry
An LED display and pulse stretcher circuit is dedicated to each
IP module for indication of a data transfer to/from the
corresponding IP module. An IP acknowledged data transfer
activates the pulse stretcher circuit. The pulse stretcher’s circuit is
programmed to illuminate the LED for a duration of 0.1 seconds
typical.
Power Supply Filters
Power line filters are dedicated to each IP module for filtering
of the +5, +12, and -12 volt supplies. The power line filters are a T
type filter circuit comprising ferrite bead inductors and a feed-thru
capacitor. The filters provide improved noise performance as is
required on precision analog IP modules. Specifically, the filters
are typically capable of over 40dB of insertion loss for undesirable
noise and oscillations in the 100MHz frequency range and over
20dB of insertion loss for noise and oscillations in the 10MHz
frequency range.
5.0 SERVICE AND REPAIR
SERVICE AND REPAIR ASSISTANCE
Surface-Mounted Technology (SMT) boards are generally
difficult to repair. It is highly recommended that a non-functioning
board be returned to Acromag for repair. The board can be
damaged unless special SMT repair and service tools are used.
Further, Acromag has automated test equipment that thoroughly
checks the performance of each board. When a board is first
produced and when any repair is made, it is tested, placed in a
burn-in room at elevated temperature, and retested before
shipment.
Please refer to Acromag's Service Policy Bulletin or contact
Acromag for complete details on how to obtain parts and repair.
PRELIMINARY SERVICE PROCEDURE
Before beginning repair, be sure that all of the procedures in
Section 2, Preparation For Use, have been followed. Also, refer to
the documentation of your carrier board to verify that it is correctly
configured. Replacement of the carrier and/or IP with one that is
known to work correctly is a good technique to isolate a faulty
board.
CAUTION: POWER MUST BE TURNED OFF BEFORE
REMOVING OR INSERTING BOARDS
Acromag’s Applications Engineers can provide further
technical assistance if required. When needed, complete repair
services are also available from Acromag.
6.0 SPECIFICATIONS
GENERAL SPECIFICATIONS
Operating Temperature.................0 to +70
°
C
-40 to +85
°
C (E Versions)
Note that visual LED performance
may be degraded below -20
°
C.
Relative Humidity........................5-95% non-condensing
Storage Temperature.....................-55 to +100
°
C
Physical Configuration....................AVME9630 (3U)
Length......................................3.937 inches (100.0 mm)
Width.......................................6.299 inches (160.0 mm)
Board Thickness......................0.062 inches (1.59 mm)
Max Component Height............0.550 inches (13.97 mm)
Recommended Card Spacing..0.800 inches, (20.32mm)
Physical Configuration....................AVME9660 (6U)
Length......................................9.187 inches (233.3 mm)
Width........................................6.299 inches (160.0 mm)
Board Thickness.......................0.062 inches (1.59 mm)
Max Component Height............0.550 inches (13.97 mm)
Recommended Card Spacing...0.800 inches, (20.32mm)
Connectors:
P1 (VMEbus)............................DIN 41612 96-pin Type C,
Level II
P2 (VMEbus)............................Not Used.
A-D (Carrier Field I/O)..............50-pin Male Header x2 stacked
“condo type” 3M 3433-D303
with ejector
latches(AVME9660)
A, B (Carrier Field I/O):.............50-pin Male Headers.
No ejector latches(AVME9630)
