Functional Description
CP605
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© 2004 Kontron Modular Computers GmbH
ID 25095, Rev. 07
2509
5.07.UG.VC.041005/14151
8
2.5.17
CompactPCI Interface
The CP605 supports a flexibly configurable, hot swap CompactPCI interface. In the System
Master slot the bridge is in the transparent mode and in the peripheral slot the CompactPCI
interface is isolated so that it cannot communicate with the CompactPCI bus. This mode is
known as the "passive mode".
2.5.17.1 System Master Configuration
In a system slot, the CP605 can communicate with all other CompactPCI boards through a
64-bit, 33 MHz, transparent, PCI-to-PCI bridge from Intel, the 21154.
The 21154 bridge supports up to seven CompactPCI loads through a passive backplane.
The 21154 is fully compliant with the PCI Local Bus Specification Rev. 2.1. The 64-bit interface
interoperates transparently with either 64-bit or 32-bit devices.
2.5.17.2 Peripheral Master Configuration (Passive Mode)
In a peripheral slot, the board receives power but does not communicate on the CompactPCI
bus; all CompactPCI signals are isolated.
In this configuration the communication is achieved via the two Gigabit Ethernet ports as de-
fined in the PICMG 2.16 specification. In the passive mode the board may be hot-swapped.
2.5.17.3 Packet Switching Backplane (PICMG 2.16)
The CP605 supports a dual Gigabit Ethernet link port (Node) on the J3 connector in accor-
dance with the CompactPCI Packet Switching Backplane Specification PICMG 2.16, Version
1.0. The two nodes are connected in the chassis via the CompactPCI Packet Switching back-
plane to the Fabric slots "A" and "B".
The PICMG 2.16 feature can be used in the system slot and in the peripheral slot.
2.5.17.4 Hot Swap Support
To ensure that a board may be removed and replaced in a working bus without disturbing the
system it requires the following additional features.
• Power ramping
• Precharge
• Hot swap control and status register bits
• Automatic interrupt generation whenever a board is about to be removed or replaced
• An LED to indicate that the board may be safely removed
2.5.17.5 Power Ramping
On the CP605, a special hot swap controller is used to ramp up the onboard supply voltage.
This is done to avoid transients on the +3.3V, +5V, +12V and -12V power supplies from the hot
swap system. When the power supply is stable, the hot swap controller generates an onboard
reset to put the board into a definite state.
