參數(shù)資料
型號: MPC8308CVMAFD
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 266 MHz, MICROPROCESSOR, PBGA473
封裝: 19 X 19 MM, 0.80 MM PITCH, 1.39 MM HEIGHT, LEAD FREE, MAPBGA-473
文件頁數(shù): 30/88頁
文件大?。?/td> 2550K
代理商: MPC8308CVMAFD
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 1
36
Freescale Semiconductor
PCI Express
D+/D- TX output rise/fall
time
TTX-RISE,
TTX-FALL
0.125
UI
2, 5
RMS AC peak common
mode output voltage
VTX-CM-ACp
VPEACPCMTX =
RMS(|VTXD+ + VTXD-|/2 -
VTX-CM-DC)
VTX-CM-DC = DC(avg) of
|VTX-D+ + VTX-D-|/2
——
20
mV
2
Absolute delta of DC
common mode voltage
during L0 and electrical
idle
VTX-CM-DC-
ACTIVE-
IDLE-DELTA
|VTX-CM-DC (during L0) -
VTX-CM-Idle-DC (During
Electrical Idle)|<=100 mV
VTX-CM-DC = DC(avg) of
|VTX-D+ + VTX-D-|/2 [L0]
VTX-CM-Idle-DC = DC(avg) of
|VTX-D+ + VTX-D-|/2
[Electrical Idle]
0—
100
mV
2
Absolute delta of DC
common mode between
D+ and D–
VTX-CM-DC-LINE-
DELTA
|VTX-CM-DC-D+ -
VTX-CM-DC-D-| <= 25 mV
VTX-CM-DC-D+ = DC(avg) of
|VTX-D+|
VTX-CM-DC-D- = DC(avg) of
|VTX-D-|
0—
25
mV
2
Electrical idle differential
peak output voltage
VTX-IDLE-DIFFp VPEEIDPTX = |VTX-IDLE-D+
-VTX-IDLE-D-| <= 20 mV
0—
20
mV
2
Amount of voltage change
allowed during receiver
detection
VTX-RCV-DETECT The total amount of
voltage change that a
transmitter can apply to
sense whether a low
impedance Receiver is
present.
—600
mV
6
TX DC common mode
voltage
VTX-DC-CM
The allowed DC Common
Mode voltage under any
conditions.
—3.6
V
6
TX short circuit current
limit
ITX-SHORT
The total current the
Transmitter can provide
when shorted to its ground
——
90
mA
Minimum time spent in
electrical idle
TTX-IDLE-MIN
Minimum time a
Transmitter must be in
Electrical Idle Utilized by
the Receiver to start
looking for an Electrical
Idle Exit after successfully
receiving an Electrical Idle
ordered set
50
——UI
Table 34. Differential Transmitter (TX) Output Specifications (continued)
Parameter
Symbol
Comments
Min
Typical
Max
Units
Notes
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