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A/D Inputs
The C8051 Controller provides eight analog-to-digital converter inputs. The C2K does not use
these inputs.
JTAG Interface
The C8051 Controller provides a JTAG interface for in-system device programming, debugging,
and boundary-scan.
4.17 PMC Sites
The C2K hosts either two single-wide PMC sites or one double-wide site that include the
following features:
• Both PMC sites support IEEE1386.1 PMC modules.
• Both PMC can dissipate a maximum of 15W can be dissipated from modules on sites
across all power rails. This may be distributed as 15W on a single PMC site or 7.5W
distributed across two PMC sites.
• Both PMC sites support N-style PMC modules per VITA 20.
• The cPCI backplane interface provides all power and ground signals.
• Each PMC site's JTAG interface is biased "inactive" and as such is not available to the
C2K JTAG Scan chain.
• BUSMODE[4–2] signals are fixed to "Return 'Card Present' if PCI-capable and uses PCI
Protocol" mode as defined in IEEE 1386-2001. The C2K ignores BUSMODE[1].
• +3.3Vaux is not supported.
• Reserved pins are not connected.
• Reset signals from each PMC site are isolated from the C2K, such that the C2K can drive
the PMC reset, but the PMC reset will not be acknowledged by the C2K. This prevents the
C2K from being reset when an installed PMC module initiates a reset.
4.17.1 PMC0 Site Features
• PMC0 is located on dedicated PCI Bus 0 connected to the MV64460 System
Controller.
• PMC0 supports 64-bit 33/66MHz PCI operation as well as 64-bit 133MHz PCI-X
operation per VITA 39 (if the installed PMC module is configured for that bus mode).
• VIO for PCI Bus 0 is configurable to either +5V or +3.3V through PCI Bus 0 VIO Select
jumper (P12) (see "PCI VIO Select (P9, P12)" on page 2-2).
NOTE: Setting PCI Bus 0 VIO to +5V forces the bus speed to 33MHz.
• PMC0_P14 is routed to cPCI_J3 using PICMG 2.3 wiring definitions. It also supports the
differential signal PCB trace requirements defined for Sentiris S4110 PMC LVDS interface
and G2 PMC.
• PMC0 is intended for higher capacity I/O or video processing and can host a PMC module
with a power rating of 15W or lower.
NOTE: Combined power dissipation for both PMC sites cannot exceed 15W.
C2K User's Guide
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Functional Blocks
4-14
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