KMPC8548EVTAUJC Freescale Semiconductor, KMPC8548EVTAUJC Datasheet - Page 32

• Manufacturer Part Number: KMPC8548EVTAUJC
• Manufacturer: Freescale Semiconductor

Specifications of KMPC8548EVTAUJC

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Enhanced Three-Speed Ethernet (eTSEC)
Figure 11
8.2.3.2
Table 29
Figure 12
32
RX_CLK clock period 10 Mbps
RX_CLK clock period 100 Mbps
RX_CLK duty cycle
RXD[3:0], RX_DV, RX_ER setup time to RX_CLK
RXD[3:0], RX_DV, RX_ER hold time to RX_CLK
RX_CLK clock rise (20%–80%)
RX_CLK clock fall time (80%–20%)
Notes:
1. The symbols used for timing specifications follow the pattern of t
2. Guaranteed by design.
inputs and t
timing (MR) with respect to the time data input signals (D) reach the valid state (V) relative to the t
going to the high (H) state or setup time. Also, t
signals (D) went invalid (X) relative to the t
the clock reference symbol representation is based on three letters representing the clock of a particular functional. For
example, the subscript of t
with the appropriate letter: R (rise) or F (fall).
provides the MII receive AC timing specifications.
shows the MII transmit AC timing diagram.
provides the AC test load for eTSEC.
(first two letters of functional block)(reference)(state)(signal)(state)
MII Receive AC Timing Specifications
TXD[3:0]
TX_CLK
Parameter/Condition
MPC8548E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 7
TX_EN
TX_ER
Output
MRX
represents the MII (M) receive (RX) clock. For rise and fall times, the latter convention is used
Table 29. MII Receive AC Timing Specifications
Figure 11. MII Transmit AC Timing Diagram
t
MTXH
MRX
Figure 12. eTSEC AC Test Load
t
MTX
clock reference (K) going to the low (L) state or hold time. Note that, in general,
MRDXKL
Z
0
= 50 Ω
symbolizes MII receive timing (GR) with respect to the time data input
t
t
MTKHDX
t
MRXH
Symbol
MTXF
t
t
MRDXKH
MRDVKH
t
t
t
MRXR
MRXF
(first two letters of functional block)(signal)(state)(reference)(state)
t
MRX
MRX
for outputs. For example, t
/t
MRX
2
2
2
1
R
L
t
MTXR
= 50 Ω
10.0
10.0
Min
1.0
1.0
35
—
—
LV
DD
MRDVKH
Typ
400
40
—
—
—
—
—
/2
MRX
Freescale Semiconductor
symbolizes MII receive
clock reference (K)
Max
4.0
4.0
65
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
%
for