ppc8572elpxavnd Freescale Semiconductor, Inc, ppc8572elpxavnd Datasheet - Page 84

• Manufacturer Part Number: ppc8572elpxavnd
• Description: Mpc8572e Powerquicc Iii Integrated Communications Processors
• Manufacturer: Freescale Semiconductor, Inc

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84
I
T
T
T
RL
RL
Z
Z
L
C
TX-SHORT
TX-SKEW
TX-IDLE-MIN
TX-IDLE-SET-TO-IDLE
TX-IDLE-TO-DIFF-DATA
TX-DIFF-DC
TX-DC
TX
TX-DIFF
TX-CM
Symbol
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 4
Table 61. Differential Transmitter (TX) Output Specifications (continued)
TX Short Circuit
Current Limit
Minimum time
spent in
Electrical Idle
Maximum time to
transition to a
valid Electrical
idle after sending
an Electrical Idle
ordered set
Maximum time to
transition to valid
TX specifications
after leaving an
Electrical idle
condition
Differential
Return Loss
Common Mode
Return Loss
DC Differential
TX Impedance
Transmitter DC
Impedance
Lane-to-Lane
Output Skew
AC Coupling
Capacitor
Parameter
Min
50
12
80
40
75
—
—
—
6
Nominal
100
—
—
—
—
—
—
—
—
—
500 +
Max
2 UI
120
200
90
—
20
20
—
—
—
Units
mA
dB
dB
nF
UI
UI
UI
ps
Ω
Ω
The total current the Transmitter can provide when
shorted to its ground
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
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 L0.
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
Measured over 50 MHz to 1.25 GHz. See Note 4
Measured over 50 MHz to 1.25 GHz. See Note 4
TX DC Differential mode Low Impedance
Required TX D+ as well as D- DC Impedance
during all states
Static skew between any two Transmitter Lanes
within a single Link
All Transmitters shall be AC coupled. The AC
coupling is required either within the media or within
the transmitting component itself. See Note 8.
Comments
Freescale Semiconductor