MPC8358 FREESCALE [Freescale Semiconductor, Inc], MPC8358 Datasheet - Page 26

• Manufacturer Part Number: MPC8358
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

UCC Ethernet Controller: Three-Speed Ethernet, MII Management
8.2
The AC timing specifications for GMII, MII, TBI, RGMII, and RTBI are presented in this section.
8.2.1
This sections describe the GMII transmit and receive AC timing specifications.
8.2.1.1
Table 26
Figure 8
26
At recommended operating conditions with LV
GTX_CLK clock period
GTX_CLK duty cycle
GTX_CLK to GMII data TXD[7:0], TX_ER, TX_EN delay
GTX_CLK clock rise time, VIL(min) to VIH(max)
GTX_CLK clock fall time, VIH(max) to VIL(min)
GTX_CLK125 clock period
GTX_CLK125 reference clock duty cycle measured at LV
Notes:
1. The symbols used for timing specifications herein follow the pattern t
2. This symbol is used to represent the external GTX_CLK125 signal and does not follow the original symbol naming
(reference)(state)
symbolizes GMII transmit timing (GT) with respect to the t
the time date input signals (D) reaching the valid state (V) to state or setup time. Also, t
timing (GT) with respect to the t
(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
clock. For rise and fall times, the latter convention is used with the appropriate letter: R (rise) or F (fall).
convention.
MPC8358E PowerQUICC™ II Pro Processor Revision 2.1 PBGA Silicon Hardware Specifications, Rev. 1
shows the GMII transmit AC timing diagram.
provides the GMII transmit AC timing specifications.
GMII, MII, RMII, TBI, RGMII, and RTBI AC Timing Specifications
GMII Timing Specifications
GMII Transmit AC Timing Specifications
GTX_CLK
for inputs and t
TXD[7:0]
Parameter/Condition
TX_EN
TX_ER
Table 26. GMII Transmit AC Timing Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
GTX
Figure 8. GMII Transmit AC Timing Diagram
t
GTXH
clock reference (K) going to the high state (H) relative to the time date input signals
DD
/ OV
t
DD
GTX
of 3.3 V ± 10%.
DD/2
GTX
t
GTXF
t
clock reference (K) going to the high state (H) relative to
G125H
t
Symbol
GTXH/tGTX
t
t
GTKHDX
GTKHDV
t
t
t
t
t
GTXR
GTXF
GTKHDX
G125
GTX
/t
(first two letters of functional block)(signal)(state)
G125
1
t
GTXR
GTX
Min
0.5
40
45
—
—
—
—
—
represents the GMII(G) transmit (TX)
for outputs. For example, t
GTKHDX
Typ
8.0
8.0
—
—
—
—
—
symbolizes GMII transmit
Freescale Semiconductor
Max
5.0
1.0
1.0
60
55
—
—
—
Unit
ns
ns
ns
ns
ns
%
%
GTKHDV
Notes
2
2