mpc8560vt667jb Freescale Semiconductor, Inc, mpc8560vt667jb Datasheet - Page 25

• Manufacturer Part Number: mpc8560vt667jb
• Description: Mpc8560 Powerquicc Iii Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

Figure 7
7.2.1.2
Table 22
Freescale Semiconductor
At recommended operating conditions with LV
At recommended operating conditions with LV
GTX_CLK data clock rise and fall time
Notes:
1. The symbols used for timing specifications herein follow the pattern t
2.Signal timings are measured at 0.7 V and 1.9 V voltage levels.
3.Guaranteed by characterization.
4.Guaranteed by design.
RX_CLK clock period
RX_CLK duty cycle
RXD[7:0], RX_DV, RX_ER setup time to RX_CLK
RXD[7:0], RX_DV, RX_ER hold time to RX_CLK
(reference)(state)
symbolizes GMII transmit timing (GT) with respect to the t
to the time date input signals (D) reaching the valid state (V) to state or setup time. Also, t
transmit timing (GT) with respect to the t
input signals (D) going invalid (X) or hold time. Note that, in general, the clock reference symbol representation is
based on three letters representing the clock of a particular functional. For example, the subscript of t
the GMII(G) transmit (TX) clock. For rise and fall times, the latter convention is used with the appropriate letter: R
(rise) or F (fall).
shows the GMII transmit AC timing diagram.
provides the GMII receive AC timing specifications.
GMII Receive AC Timing Specifications
GTX_CLK
Parameter/Condition
TXD[7:0]
Parameter/Condition
TX_EN
TX_ER
for inputs and t
Table 21. GMII Transmit AC Timing Specifications (continued)
MPC8560 Integrated Processor Hardware Specifications, Rev. 4.2
Table 22. GMII Receive AC Timing Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
Figure 7. GMII Transmit AC Timing Diagram
t
GTXH
t
DD
GTKHDV
DD
of 3.3 V ± 5%, or LV
of 3.3 V ± 5%, or LV
t
GTX
GTX
clock reference (K) going to the high state (H) relative to the time date
t
DD
DD
GTXR
t
=2.5V ± 5%.
Symbol
=2.5V ± 5%.
Symbol
GRXH
t
t
GTX
t
GRDVKH
GRDXKH
GTXF
t
, t
GRX
GTXF
/t
clock reference (K) going to the high state (H) relative
t
GRX
GTKHDX
1
1
(first two letters of functional block)(signal)(state)
2,4
t
GTXR
Min
Min
2.0
0.5
40
—
—
Ethernet: Three-Speed, MII Management
for outputs. For example, t
Typ
Typ
8.0
—
—
—
—
GTKHDX
Max
Max
symbolizes GMII
1.0
60
—
—
—
GTX
represents
GTKHDV
Unit
Unit
ns
ns
ns
ns
ns
25