MPC8533EVTANG Freescale Semiconductor, MPC8533EVTANG Datasheet - Page 1145

• Manufacturer Part Number: MPC8533EVTANG
• Description: MPU POWERQUICC 783-PBGA
• Manufacturer: Freescale Semiconductor

Specifications of MPC8533EVTANG

• Processor Type: MPC85xx PowerQUICC III 32-Bit
• Speed: 800MHz
• Voltage: 1V
• Mounting Type: Surface Mount
• Package / Case: 783-FCPBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

PCI Express Interface Controller
18.4
Functional Description
The PCI Express protocol relies on a requestor/completer relationship where one device requests that some
desired action be performed by some target device and the target device completes the task and responds.
Usually the requests and responses occur through a network of links, but to the requestor and to the
completer, the intermediate components are transparent.
Intermediate
Ultimate
Requestor
Link
Link
Component(s)
Completer
Figure 18-122. Requestor/Completer Relationship
Each PCI device is divided into two halves-transmit (TX) and receive (RX), and each of these halves is
further divided into three layers—transaction, data link, and physical—as shown in
Figure
18-123.
Transaction
Transaction
Data Link
Data Link
Physical
Physical
Logical Sub-block
Logical Sub-block
Electrical Sub-block
Electrical Sub-block
RX
TX
RX
TX
Figure 18-123. PCI Express High-Level Layering
Packets are formed in the transaction layer (TLPs) and data link layer (DLLPs), and each subsequent layer
adds the necessary encodings and framing—as shown in
Figure
18-124. As packets are received, they are
decoded and processed by the same layers but in reverse order, so they may be processed by the layer or
by the device application software.
MPC8533E PowerQUICC III Integrated Host Processor Family Reference Manual, Rev. 1
Freescale Semiconductor
18-97