MPC8536DS Freescale, MPC8536DS Datasheet - Page 58

• Manufacturer Part Number: MPC8536DS
• Manufacturer: Freescale

Specifications of MPC8536DS

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Ethernet: Enhanced Three-Speed Ethernet (eTSEC), MII Management
2.9.3.4
This section describes the SGMII transmit and receive AC timing specifications. Transmitter and receiver characteristics are
measured at the transmitter outputs (SD2_TX[n] and SD2_TX[n]) or at the receiver inputs (SD2_RX[n] and SD2_RX[n]) as
depicted in
2.9.3.4.1
Table 41
58
At recommended operating conditions with X2V
Loss of signal threshold
Input AC common mode voltage
Receiver differential input impedance
Receiver common mode input
impedance
Common mode input voltage
Notes:
1. Input must be externally AC-coupled.
2. V
3. The concept of this parameter is equivalent to the Electrical Idle Detect Threshold parameter in PCI Express. See PCI
4. The LSTS shown in the table refers to the LSTSA or LSTSE bit field of MPC8536’s SerDes 2 Control Register.
5. V
6. On-chip termination to S2GND (xcorevss).
Express Differential Receiver (RX) Input Specifications section for further explanation.
RX_DIFFp-p
CM_ACp-p
Deterministic Jitter
Total Jitter
Unit Interval
V
V
Notes:
1. Each UI is 800 ps ± 100 ppm.
OD
OD
provides the SGMII transmit AC timing targets. A source synchronous clock is not provided.
Figure 32
fall time (80%-20%)
rise time (20%-80%)
is also referred to as peak to peak AC common mode voltage.
SGMII AC Timing Specifications
SGMII Transmit AC Timing Specifications
Parameter
is also referred to as peak to peak input differential voltage
Parameter
MPC8536E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 2
respectively.
Table 40. SGMII DC Receiver Electrical Characteristics (continued)
LSTS = 0
LSTS = 1
Table 41. SGMII Transmit AC Timing Specifications
Symbol
DD
t
V
tfall
JD
JT
= 1.0V ± 5%.
UI
rise
Z
Symbol
Z
CM_ACp-p
RX_DIFF
VLOS
RX_CM
V
CM
799.92
Min
50
50
—
—
Min
30
65
80
20
—
—
Typ
800
V
—
—
—
—
xcorevss
Typ
100
—
—
—
—
800.08
Max
0.17
0.35
120
120
Max
100
175
100
120
35
—
UI p-p
UI p-p
Unit
ps
ps
ps
Freescale Semiconductor
Unit
mV
mV
Ω
Ω
V
Notes
—
—
—
—
1
Notes
3, 4
—
—
5
6