參數(shù)資料
型號(hào)： MPC8544VTARJ
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 533 MHz, MICROPROCESSOR, PBGA783
封裝： 29 X 29 MM, 1 MM PITCH, LEAD FREE, PLASTIC, FC-PBGA-783
文件頁(yè)數(shù)： 79/112頁(yè)
文件大小： 1294K
代理商： MPC8544VTARJ
MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 0
Freescale Semiconductor
69
PCI Express
VTX-RCV-DETECT
Amount of voltage
change allowed during
receiver detection
600
mV
The total amount of voltage change that a
transmitter can apply to sense whether a
low impedance receiver is present. See
Note 6.
VTX-DC-CM
TX DC common mode
voltage
0
3.6
V
The allowed DC common mode voltage
under any conditions. See Note 6.
ITX-SHORT
TX short circuit current
limit
90
mA
The total current the transmitter can
provide when shorted to its ground.
TTX-IDLE-MIN
Minimum time spent in
electrical idle
50
UI
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.
TTX-IDLE-SET-TO-IDLE
Maximum time to
transition to a valid
electrical idle after
sending an electrical
Idle ordered set
20
UI
After sending an electrical idle ordered set,
the transmitter must meet all electrical idle
specifications within this time. This is
considered a debounce time for the
transmitter to meet electrical idle after
transitioning from LO.
TTX-IDLE-TO-DIFF-DATA
Maximum time to
transition to valid TX
specifications after
leaving an electrical
idle condition
20
UI
Maximum time to meet all TX
specifications when transitioning from
electrical idle to sending differential data.
This is considered a debounce time for the
TX to meet all TX specifications after
leaving electrical idle.
RLTX-DIFF
Differential return loss
12
dB
Measured over 50 MHz to 1.25 GHz. See
Note 4.
RLTX-CM
Common mode return
loss
6
dB
Measured over 50 MHz to 1.25 GHz. See
Note 4.
ZTX-DIFF-DC
DC differential TX
impedance
80
100
120
Ω
TX DC differential mode low impedance.
ZTX-DC
Transmitter DC
impedance
40
Ω
Required TX D+ as well as D– DC
Impedance during all states.
LTX-SKEW
Lane-to-lane output
skew
500 +
2 UI
ps
Static skew between any two transmitter
lanes within a single link.
CTX
AC coupling capacitor
75
200
nF
All transmitters shall be AC coupled. The
AC coupling is required either within the
media or within the transmitting component
itself.
Table 59. Differential Transmitter (TX) Output Specifications (continued)
Symbol
Parameter
Min
Nom
Max
Units
Comments
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