ix
System Memory ....................................................................................................... 4-7
PCI Local Buses and Devices .................................................................................. 4-8
Gigabit Ethernet Interface ................................................................................. 4-8
10/100Mb Ethernet Interface ............................................................................ 4-8
PCI-to-PCI Bridges ........................................................................................... 4-9
PMC Sites ......................................................................................................... 4-9
PCI IDSEL Definition ....................................................................................... 4-9
PCI Bus Arbitration .......................................................................................... 4-9
Asynchronous Serial Ports ..................................................................................... 4-10
Real Time Clock and NVRAM .............................................................................. 4-10
System Control and Status Registers ......................................................................4-11
Sources of Reset ......................................................................................................4-11
VME Interface .........................................................................................................4-11
PMC Expansion ..................................................................................................... 4-12
Debug Support ....................................................................................................... 4-12
Introduction .............................................................................................................. 5-1
Connectors ................................................................................................................ 5-2
Asynchronous Serial Port Connector (J1) ......................................................... 5-2
Ethernet Connectors (J2) ................................................................................... 5-3
IPMC Connector (J3) ........................................................................................ 5-3
PCI/PMC Expansion Connector (J4) ................................................................ 5-5
CPU COP Connector (J5) ................................................................................. 5-8
PMC 1 Interface Connectors (J11, J12, J13, J14) ............................................. 5-8
Boundary Scan Connector (J18) ..................................................................... 5-15
PMC 2 Interface Connectors (J21, J22, J23, J24) ........................................... 5-16
Asynchronous Serial Port (COM2) Planar Connector (J33) ........................... 5-22
VMEbus Connectors (P1 & P2) (PMC Mode) ............................................... 5-22
VMEbus Connectors (P1 & P2) (SBC Mode) ................................................ 5-25
Memory Expansion Connector (P4) ............................................................... 5-29
Ethernet .................................................................................................... 5-33
PMC/SBC Mode Selection ...................................................................... 5-34
P2 I/O Selection ....................................................................................... 5-35
Flash Boot Bank Select Header (J8) ............................................................... 5-40
Flash 0 Programming Enable Header (J9) ...................................................... 5-40
Safe Start ENV Header (J10) .......................................................................... 5-41