參數(shù)資料
型號: MC8640DVU1067NE
廠商: Freescale Semiconductor
文件頁數(shù): 85/130頁
文件大小: 0K
描述: IC MPU DUAL CORE E600 1023FCCBGA
標(biāo)準(zhǔn)包裝: 1
系列: MPC86xx
處理器類型: 32-位 MPC86xx PowerPC
速度: 1.067GHz
電壓: 0.95V
安裝類型: 表面貼裝
封裝/外殼: 1023-BCBGA,F(xiàn)CCBGA
供應(yīng)商設(shè)備封裝: 1023-FCCBGA(33x33)
包裝: 托盤
MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
58
Freescale Semiconductor
High-Speed Serial Interfaces (HSSI)
Figure 38 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.
Figure 38. Differential Voltage Definitions for Transmitter or Receiver
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.
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.
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.
Differential Input Voltage, VID (or Differential Input Swing):
The differential input voltage (or swing) of the receiver, VID, is defined as the
difference of the two complimentary input voltages: VSDn_RX – VSDn_RX. The
VID value can be either positive or negative.
Differential Peak Voltage, VDIFFp
The peak value of the differential transmitter output signal or the differential
receiver input signal is defined as differential peak voltage, VDIFFp = |A – B| volts.
Differential Peak-to-Peak, VDIFFp-p
Since the differential output signal of the transmitter and the differential input
signal of the receiver each range from A – B to –(A – B) volts, the peak-to-peak
value of the differential transmitter output signal or the differential receiver input
Differential Swing, VID or VOD = A – B
A Volts
B Volts
SDn_TX or
SDn_RX
SDn_TX or
SDn_RX
Differential Peak Voltage, VDIFFp = |A - B|
Differential Peak-Peak Voltage, VDIFFpp = 2
× VDIFFp (not shown)
Vcm = (A + B) ÷ 2
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