參數(shù)資料
型號: MPC8540PXALDB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 667 MHz, MICROPROCESSOR, PBGA783
封裝: 29 X 29 MM, 3.75 MM HEIGHT, 1 MM PITCH, FLIP CHIP, PLASTIC, BGA-783
文件頁數(shù): 58/104頁
文件大?。?/td> 2133K
代理商: MPC8540PXALDB
MPC8540 Integrated Processor Hardware Specifications, Rev. 3.1
Freescale Semiconductor
57
RapidIO
Figure 35 shows the DC driver signal levels.
Figure 35. DC Driver Signal Levels
13.2 RapidIO AC Electrical Specifications
This section contains the AC electrical specifications for a RapidIO 8/16 LP-LVDS device. The interface defined is
a parallel differential low-power high-speed signal interface. Note that the source of the transmit clock on the
RapidIO interface is dependent on the settings of the LGPL[0:1] signals at reset. Note that the default setting makes
the core complex bus (CCB) clock the source of the transmit clock. See Chapter 4 of the Reference Manual for more
details on reset configuration settings.
13.3 RapidIO Concepts and Definitions
This section specifies signals using differential voltages. Figure 36 shows how the signals are defined. The figure
shows waveforms for either a transmitter output (TD and TD) or a receiver input (RD and RD). Each signal swings
between A volts and B volts where A > B. Using these waveforms, the definitions are as follows:
The transmitter output and receiver input signals TD, TD, RD, and RD each have a peak-to-peak swing of
A-B volts.
The differential output signal of the transmitter, VOD, is defined as VTD – VTD.
The differential input signal of the receiver, VID, is defined as VRD – VRD.
The differential output signal of the transmitter or input signal of the receiver, ranges from A – B volts to –
(A – B) volts.
The peak differential signal of the transmitter output or receiver input, is A – B volts.
The peak-to-peak differential signal of the transmitter output or receiver input, is 2
× (A – B) volts.
VOA
VOB
RTERM
100
(no m)
VVOD = VOA – VOB
VOS
VOHCM
VOLCM
VOSCM = (VOA + VOB)/2
–V +
VOD
V
VOD = VOA – VOB
–V –
VOD
–V
0
1.375 V
1.125 V
454 mV
247 mV
–247 mV
–454 mV
VOLD
Common-Mode Specifications
(c)
Differential Specifications
(b)
(a)
Note: VOA refers to voltage at output A; VOB refers to voltage at output B.
VOHD
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MPC8540PXAPDB 32-BIT, 833 MHz, MICROPROCESSOR, PBGA783
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