mpc8314e Freescale Semiconductor, Inc, mpc8314e Datasheet - Page 35

• Manufacturer Part Number: mpc8314e
• Description: Powerquicc Ii Pro Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

9.5.4
This section describes the SGMII transmit and receive AC timing specifications. Transmitter and receiver
characteristics are measured at the transmitter outputs (TX[n] and TX[n]) or at the receiver inputs (RX[n]
and RX[n]) as depicted in
9.5.4.1
Table 37
Freescale Semiconductor
At recommended operating conditions with XCOREVDD = 1.0V ± 5%.
Loss of signal threshold
Input AC common mode voltage
Receiver differential input impedance
Receiver common mode input
impedance
Common mode input voltage
Note:
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. Refer to PCI
4. The EQ shown in the table refers to the RXEQA or RXEQE bit field of MPC8315E’s SerDes Control Register 0.
5. V
6. On-chip termination to XCOREVSS.
Deterministic Jitter
Total Jitter
Unit Interval
V
V
Notes:
1. Each UI is 800 ps ± 100 ppm.
OD
OD
Express Differential Receiver (RX) Input Specifications section for further explanation.
RX_DIFFp-p
CM_ACp-p
fall time (80%-20%)
rise time (20%-80%)
provides the SGMII transmit AC timing targets. A source synchronous clock is not provided.
is also referred to as peak to peak AC common mode voltage.
SGMII AC Timing Specifications
is also referred to as peak to peak input differential voltage
Parameter
SGMII Transmit AC Timing Specifications
Parameter
MPC8314E PowerQUICC
Table 36. SGMII DC Receiver Electrical Characteristics (continued)
EQ = 0
EQ = 1
Figure 20
Table 37. SGMII Transmit AC Timing Specifications
respectively.
V
Z
Symbol
Z
CM_ACp-p
RX_DIFF
VLOS
RX_CM
V
CM
Symbol
™
tfall
t
II Pro Processor Hardware Specifications, Rev. 0
JD
JT
UI
rise
Min
30
65
80
20
—
—
799.92
Min
50
50
—
—
V
xcorevss
Typ
100
—
—
—
—
Typ
800
—
—
—
—
Ethernet: Three-Speed Ethernet, MII Management
Max
100
175
100
120
35
—
800.08
Max
0.17
0.35
120
120
Unit
UI p-p
UI p-p
mV
mV
Unit
Ω
Ω
V
ps
ps
ps
Notes
Notes
3, 4
—
—
—
—
—
—
—
5
6
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