参数资料
型号: MPC8533VTALFB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 667 MHz, RISC PROCESSOR, PBGA783
封装: 29 X 29 MM, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-783
文件页数: 74/116页
文件大小: 1277K
代理商: MPC8533VTALFB
MPC8533E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 2
60
Freescale Semiconductor
High-Speed Serial Interfaces (HSSI)
Figure 39 shows the PCI output AC timing conditions.
Figure 39. PCI Output AC Timing Measurement Condition
16 High-Speed Serial Interfaces (HSSI)
The MPC8533E features two Serializer/Deserializer (SerDes) interfaces to be used for high-speed serial
interconnect applications.Both SerDes1 and SerDes2 can be used for PCI Express data transfers
application.This section describes the common portion of SerDes DC electrical specifications, which is the
DC requirement for SerDes Reference Clocks. The SerDes data lane’s transmitter and receiver reference
circuits are also shown.
16.1
Signal Terms Definition
The SerDes utilizes differential signaling to transfer data across the serial link. This section defines terms
used in the description and specification of differential signals.
Figure 40 shows how the signals are defined. For illustration purpose, only one SerDes lane is used for
description. The figure shows waveform for either a transmitter output (SDn_TX and SDn_TX) or a
receiver input (SDn_RX and SDn_RX). Each signal swings between A Volts and B Volts where A > B.
Using this waveform, the definitions are as follows. To simplify illustration, the following definitions
assume that the SerDes transmitter and receiver operate in a fully symmetrical differential signaling
environment.
1. Single-Ended Swing
The transmitter output signals and the receiver input signals SDn_TX, SDn_TX, SDn_RX and
SDn_RX each have a peak-to-peak swing of A - B Volts. This is also referred as each signal wire’s
Single-Ended Swing.
2. Differential Output Voltage, VOD (or Differential Output Swing):
The Differential Output Voltage (or Swing) of the transmitter, VOD, is defined as the difference of
the two complimentary output voltages: VSDn_TX – VSDn_TX. The VOD value can be either positive
or negative.
CLK
Output Delay
tPCKHOV
High-Impedance
tPCKHOZ
Output
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