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Functional Description
2.10.12
Debug Interface
The CP6003-RA/RC provides several onboard options for hardware and software debugging, such
as:
• Four bicolor Debug LEDs (DLED0..3), which indicate hardware failures, uEFI BIOS
POST codes and user-configurable outputs
• A JTAG connector, J20, for programming the onboard logic
• An XDP-SFF, processor JTAG connector, J24, for facilitating the debug and uEFI BIOS
software development
2.10.13
CompactPCI Interface
The CP6003-RA/RC supports a flexibly configurable, hot swap CompactPCI interface. In the
system slot the PCI/ PCI-X interface 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 "passive mode".
2.10.13.1 Board Functionality when Installed in System Slot
In a system slot, the CompactPCI interface can be either a 64-bit/66 MHz PCI or PCI-X inter-
face via a dedicated PCI Express-to-PCI-X bridge from Pericom (PI7C9X130).
The CP6003-RA/RC supports up to seven peripheral slots with 33 MHz and up to 4 peripheral
slots with 66 MHz through a backplane.
The PCI Express-to-PCI-X bridge detects the PCI mode (PCI or PCI-X) and the bus speed (33
MHz or 66 MHz) via two PCI control signals on J1: PCIXCAP (pin B16) and M66EN (pin D21).
The following configurations are supported by the CompactPCI interface.
Table 2-20: CompactPCI PCI/PCI-X Configuration
FREQUENCY
MODE
33 MHz
PCI
33 MHz
PCI
66 MHz
PCI
66 MHz
PCI
66 MHz
PCI-X
Note ...
To support 66 MHz PCI/PCI-X frequency, the CompactPCI signaling voltage
(VI/O) must be 3.3 V.
The CP6003-RA/RC provides automatic voltage detection for the VI/O to switch
the PCI frequency to 33 MHz in an 5V environment.
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M66EN
PCIXCAP
J1, PIN D21
J1, PIN B16
Low
Low
--
Low
High
Low
High
--
--
Pull-down resistor
CP6003-RA/RC
DIP SWITCH SW1
DIP SWITCH SW1
SWITCH 1
OFF
OFF
OFF
ON
OFF
ID 1046-3890, Rev. 1.0
SWITCH 2
OFF
ON
OFF
OFF
OFF
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