Emerson CC1000DM user manual Implementation, Hot Swap

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Implementation

C A R R I E R C A R D B U S I N T E R F A C E

Hot Swap

Individual Hot Swap implementations are differentiated by the Hot Swap resources that are distributed throughout the system. In order for Hot Swap to be feasible, a board either being inserted or extracted from a system must not disturb the system power or the quality of the bus signals.

To prevent power or signal disruption, the CC1000dm requires:

1Staged Backplane Pins — These pins allow Hot Swap to be implemented in a simple open manner. Hot Swap compliant backplanes have three pin heights. Long pins are used to provide “early power” to a board as it is being inserted; this powers the circuitry that controls power-ramping and bus isolation circuitry. Most signal pins are of medium length. The shortest pin, BD_SEL*, indicates that a board is fully seated. Systems use this pin to control board power-up.

2Power-Ramping Circuitry — This ensures that system power is not disturbed when a board is inserted into a system. It limits in-rush current by ramping the power supplied to the board. This circuitry is located on peripheral boards.

3Bus Isolation Circuitry — This ensures that boards that have not been configured do not compromise the integrity of currently active signals on the backplane. This peripheral board circuitry precharges signal pins to prevent capacitive draw when the board is inserted.

Other Resources In addition to the practice of not distributing system power or other signals on a Hot Swap backplane, Hot Swap systems use other resources to minimize operator interven- tion when boards are added or removed, or when a board fails.

For example, Hot Swap systems may implement a blue LED on the front panel of a peripheral board to indicate when it is permissible to remove a board from the system. Upon insertion of a peripheral board, the LED is on until the hardware connection pro- cess is completed. The LED then remains off until it is used by the software to indicate that the board extraction is permitted.

The following signals are also useful:

L_STAT: STATUS signal monitors the micro-switch which is activated by the CC1000dm card ejector handle. The micro-switch indicates to the PCI bridge when the ejector is open or closed. A CC1000dm blue LED indicates the Hot Swap status.

P_ENUM: ENUMERATION signal indicates that the card has been inserted and is ready for config- uration, or that the card is about to be removed and should be deactivated by the soft- ware. This signal is deasserted when the corresponding insertion or removal event bit is cleared.

P_RST*: RESET, with the assertion of this input line brings PCI registers, sequencers, and signals to a consistent state.

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Contents CC1000dm Revision Level Principal Changes Date Regulatory Agency Warnings & Notices EC Declaration of Conformity Contents PCI Bridge Features PMC Module Installation Bridge EepromFigures G u r e s Tables Ta b l e s Registers G i s t e r s Overview N. .C.T.I.O. N. .A. L. . O. .V.E. R. .V.I.E.W Functional OverviewProduct Certification Type SpecificationRoHS Compliance Terminology and Notation Technical ReferencesAdditional Information Device / Interface DocumentDocument 6CC1000dm User’s Manual 10004281-02 Setup Width DepthCC1000dm Circuit Board Component Map, Top revCC1000dm Circuit Board Identification Numbers Connectors Fuses and Jumpers Jumper/Header Locations, Top View CC1000dm Setup Multiple Option Selection JP3CC1000dm Setup Signal Name Bit SelectionSignal Name Pin SignalBit Selection Jumper Jumper Position ModeSelPower Requirements Environmental ConsiderationsOperational Checks Typical Current Voltage Range AmpsS. E. .T. .M. E. .T.H. O. .D.S Reset Methods Non-transparentTroubleshooting O. U. .B. L. E. .S.H. O. .O. T. I. N. .G14CC1000dm User’s Manual 10004281-02 PMC/PCI Interface PMC Module Installation Device MappingC / P C I I N T E R F a C E VoltsBase cPCI Interrupt Transparent Mode Assignment Secondary Timing InterruptsBase PCI Interrupt System controller modesInternal Arbiter Control Register CC1000dm Request/Grant Local PCI Bus Device I.D. G. .E. .E.E. P. .R.O. M Bridge EepromPCI 6254 Configuration Registers PCI 6254 Configuration Registers Power Management CSR38h Reserved Status PCI Identification Values PCI 6254 Bridge ModeVendor Device Subsystem ID hex PCI Bus Control Signals I. .B.U. S. . C. .O. N. .T.R. O. .L. .S.I.G. N. .A.L. SPCI Bus Control Signals PMC Connector Pin Assignments Pin J11 J12 J13 J14Pin J11 J13 J14 Pin J11 J12Pin J21 J23 J24 Pin J21 J22Pin J21 J22 J23 J24 Carrier Card BUS Interface O. C. .K. .G. E. .N. E. R. .A.T. I.O. .N Arbitration and Device SelectionHot Swap Model DescriptionImplementation Hot SwapSignal Description CC1000dm Control SignalsPin Row Z Row a Row B Row C Row D Row E Row F Backplane Connector Pin Assignments Pin Row Z Row a Row B Row C Row D Row ERow F Pin Row a Row B Row C Row D Row E Row FPin Row a Row B Row C Row D Row E Backplane Connector Pin Assignments 10CC1000dm User’s Manual 10004281-02 CPCI PrPMCO s s a r y Index D e Page W. a r t e s y n c p . c o m
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