MPC5200B Users Guide, Rev. 1
10-2 Freescale Semiconductor
PCI External Signals

10.1.2 Block Diagram

Figure 10-1. PCI Block Diagram

10.2 PCI External Signals

Table10-1. PCI External Signals
Signal I/O Definition
AD[31:0] I/O Multiplexed Address and Data Bus (Shared with ATA and LPC). AD31 is the most
significant bit while AD0 is the least significant as per the PCI specification. The entire
PCI external bus is little Endian ordered.
PCI_CBE[3:0] I/O Command/Bytes Enables
PCI_DEVSEL I/O Device Select
PCI_FRAME I/O Frame
PCI_IDSEL IInitialization Device Select
PCI_IRDY I/O Initiator Ready
PCI_PAR I/O Parity
PCI_CLK OPCI Clock
PCI_PERR I/O Parity Error
PCI_RST OPCI Reset
PCI_SERR I/O System Error
PCI_STOP I/O Stop
PCI_TRDY I/O Target Ready
ExternalPCI bus
PCI
Arbiter
Config
External REQ/GNT
CommBus
PCI
Controller
Req/Gnt
Config
Interface
Tar ge t
Interface
Initiator
Interface
Slave bus
XL bus
Master
bus/ Com-
mBus
Initiator
Master bus
Target

PCI Controller Block