Pmc Interface - Kontron CP6003-SA User Manual

CP6003-SA
2.10.8

PMC Interface

The CP6003-SA provides a PMC interface with a dedicated PCI Express-to-PCI-X bridge from
Pericom (PI7C9X130). This interface is configurable for either 64-bit/66 MHz PCI or 64-bit/
133 MHz PCI-X operation and is compliant with the IEEE 1386.1-2001 specification, which de-
fines a PCI electrical interface for the CMC (Common Mezzanine Card) form factor. The board
provides only 3.3V PMC PCI/PCI-X signaling environment.
A PMC module can be connected to the CP6003-SA via the J21 (Jn3), J22 (Jn1), J23 (Jn4)
and J24 (Jn2). The J22 (Jn1) and J24 (Jn2) connectors provide the signals for the 32-bit PCI
bus. The 64-bit extension for the PMC interface is supported by the J21 (Jn3) connector. User-
defined I/O signals are supported on J23 (Jn4) and are connected to the CompactPCI rear I/O
connector J4.
The PCI Express-to-PCI-X bridge detects the PCI mode (PCI or PCI-X) and the bus speed (33
MHz, 66 MHz, 100 MHz or 133 MHz) via two PCI control signals: PCIXCAP on J22 (pin 39)
and M66EN on J24 (pin 47). The following configurations are supported by the PMC interface.
Table 2-13: PMC PCI/PCI-X Configuration
FREQUENCY
33 MHz
66 MHz
66 MHz
100 MHz
133 MHz
The default configuration of the DIP switch SW3, switch 1, is OFF. If this switch is set to OFF,
the PCI/PCI-X interface frequency is 33 MHz, 66 MHz or 133 MHz.
Warning!
DIP switch SW3, switch 1, must be set in accordance with Table 2-15.
Failure to comply with the above will cause unexpected system error due to non-
compliance of the PMC subsystem with the PCI-X specification.
ID 1044-9757, Rev. 2.0
M66EN
MODE
J24 (Jn2), PIN 47
PCI Low
PCI High
PCI-X --
PCI-X --
PCI-X --
Functional Description
PCIXCAP DIP SWITCH SW3
J22 (Jn1), PIN 39
Low
Low
Pull-down resistor
High
High
SWITCH 1
OFF
OFF
OFF
ON
OFF
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