RAM5006E-016 Emerson Network Power, RAM5006E-016 Datasheet - Page 60

• Manufacturer Part Number: RAM5006E-016
• Manufacturer: Emerson Network Power

Specifications of RAM5006E-016

• Lead Free Status / RoHS Status: Compliant

42
4 Functional Description
VMEbus Interface
Asynchronous Communications
Real-Time Clock & NVRAM & Watchdog Timer
Timers
Interrupt Routing
IDSEL Routing
MVME51005E Single Board Computer Installation and Use (6806800A38B)
The VMEbus interface is provided by the Universe II ASIC. Refer to the Universe II User’s
Manual, as listed in
The MVME5100 provides dual asynchronous debug ports. The serial signals COM1 and COM2
are routed through appropriate EIA-232 drivers and receivers to an RJ45 connector on the front
panel (COM1) and an on-board connector (COM2). The external signals are ESD protected.
The MVME5100’s design incorporates 32KB of non-volatile static RAM, along with a real-time
clock and a watchdog function an integrated device. Refer to the M48T37V CMOS 32Kx8
Timekeeper SRAM Data Sheet, as referenced in
additional programming and engineering information.
Timers and counters on the MVME5100 are provided by the board’s hardware (Hawk ASIC).
There are four 32-bit timers on the board that may be used for system timing or to generate
periodic interrupts.
Legacy interrupt assignment for the PCI/ISA Bridge is maintained to ensure software
compatibility between the MVME5100 and the MVME2700 while in SBC mode.
This is accomplished by using the corresponding on-board IPMC712 or IPMC761 connector to
route the PCI/ISA Bridge interrupt signal to the external interrupt 0 of the Hawk ASIC (MPIC).
Note
Legacy IDSEL assignment for the PCI/ISA Bridge is also maintained to ensure software
compatibility between MVME5100 and the MVME2700 while in SBC mode (also called 761 or
IPMC mode).
This is accomplished by using either the on-board IPMC712 or IPMC761 connector to route
IDSEL (AD11) to the PCI/ISA Bridge on the IPMC712 or IPMC761.
Note
When a standard PMC card (not the IPMC712 or IPMC761) is plugged into slot 1, its IDSEL
assignment corresponds to the standard IDSEL pin J12-25 and shall be connected to AD16.
The SCSI device on either the IPMC712 or IPMC761 uses the standard INTA# pin J11-
04 of PMC Slot 1.
The SCSI device on the IPMC712 and IPMC761 uses the standard IDSEL pin J12-25
connected to AD16.
Appendix D, Related
Documentation, for additional information.
Appendix D, Related Documentation
for